阅读说明：本技术 星载随遇测控终端在网空闲态快速转业务测控方法和系统 (Satellite-borne random measurement and control terminal on-network idle state rapid business transfer measurement and control method and system ) 是由 杨瑜波 吉欣 翟盛华 吕晶晶 成琦 李静澜 闫泽坤 于 2021-09-30 设计创作，主要内容包括：本发明公开了一种星载随遇测控终端在网空闲态快速转业务测控方法和系统,该方法包括：当星载随遇测控终端接收到突发测控请求后,选择最优接入信道；通过所选择的最优接入信道启动突发测控业务申请,完成星载随遇测控终端的转业务操作；当星载随遇测控终端的转业务操作完成后,跨测控平台,对星地测控系统当前开展的测控业务情况进行实时检测,得到检测结果并输出。通过本发明可完成航天器在新型随遇接入测控体制下自主发起突发测控请求工作,在星端快速完成接入信道选择,启动突发测控业务申请操作,实时检测突发测控业务链路工作情况,协同地面快速建立、维持、撤销突发测控业务链路,从而完成星载随遇测控终端突发测控的快速响应。(The invention discloses a satellite-borne random measurement and control terminal on-network idle state rapid service switching measurement and control method and a system, wherein the method comprises the following steps: when the satellite-borne random measurement and control terminal receives the burst measurement and control request, the optimal access channel is selected; starting a burst measurement and control service application through the selected optimal access channel to complete the service transfer operation of the satellite-borne random measurement and control terminal; and after the business transfer operation of the satellite-borne random measurement and control terminal is finished, the measurement and control platform is crossed, the measurement and control business condition currently developed by the satellite-ground measurement and control system is detected in real time, and a detection result is obtained and output. The invention can complete the autonomous initiation of burst measurement and control request work of the spacecraft under a novel random access measurement and control system, quickly complete the access channel selection at the satellite end, start the application operation of burst measurement and control service, detect the working condition of a burst measurement and control service link in real time, and quickly establish, maintain and cancel the burst measurement and control service link in cooperation with the ground, thereby completing the quick response of the burst measurement and control of the satellite-borne random measurement and control terminal.)

1. A satellite-borne random measurement and control terminal rapid business switching measurement and control method in an idle state of a network is characterized by comprising the following steps:

when the satellite-borne random measurement and control terminal receives the burst measurement and control request, the optimal access channel is selected;

starting a burst measurement and control service application through the selected optimal access channel to complete the service transfer operation of the satellite-borne random measurement and control terminal;

and after the business transfer operation of the satellite-borne random measurement and control terminal is finished, the measurement and control platform is crossed, the measurement and control business condition currently developed by the satellite-ground measurement and control system is detected in real time, and a detection result is obtained and output.

2. The on-board encounter-following measurement and control terminal on-network idle state fast service switching measurement and control method according to claim 1, wherein the burst measurement and control request is as follows: the satellite sends a measurement and control request through the satellite service computer at any time and any position.

3. The on-board satellite-borne on-demand measurement and control terminal on-network idle state rapid service transfer measurement and control method according to claim 2, wherein a satellite initiating a burst measurement and control request satisfies the following two conditions:

condition 1: satellites in the coverage range of the space-foundation panoramic beam system;

condition 2: a satellite in an on-grid idle state.

4. The method for rapidly switching the service of the satellite-borne on-board measurement and control terminal to the idle state in the network according to claim 1, wherein the selecting the optimal access channel comprises:

in the coverage area of the space-ground based panoramic beam system, continuously detecting an uplink broadcast signal by a satellite-borne random measurement and control terminal to obtain an uplink broadcast channel detection result;

determining the priority of the measurement and control event according to the priority indication of the sudden measurement and control event sent by the house-keeping computer;

acquiring optimal ground access point information;

and selecting an optimal access channel according to the detection result of the uplink broadcast channel, the priority of the measurement and control event and the optimal ground access point information.

5. The method for rapidly switching the service of the satellite-borne on-demand measurement and control terminal to the idle state of the network according to claim 4, wherein the step of selecting the optimal access channel according to the detection result of the uplink broadcast channel, the priority of the measurement and control event and the information of the optimal ground access point comprises the following steps:

determining a weight W1 according to the detection result of the uplink broadcast channel; determining a weight W2 according to the priority of the measurement and control event; determining a weight W3 according to the optimal ground access point information; determining the value of the total weight W according to the values of W1, W2 and W3; selecting an optimal access channel according to the determined value of the total weight W;

when the detection result of the uplink broadcast channel is successful, W1 is 1; when the detection result of the uplink broadcast channel is failure, W1 is 0; when the measurement and control event indicated by the measurement and control event priority is high priority, W2 is equal to 1; when the measurement and control event indicated by the measurement and control event priority is the common priority, W2 is equal to 0; when it is determined that the optimal terrestrial access point exists, W3 is 1; when it is determined that there is no optimal terrestrial access point, W3 is 0; W-W1 & W2& W3.

6. The method for rapidly switching the service of the satellite-borne on-board measurement and control terminal to the idle state of the network according to claim 5, wherein the step of selecting the optimal access channel according to the determined value of the total weight W comprises the following steps:

when W is 000, entering on-satellite timing waiting, waiting for detecting the uplink broadcast signal again, updating the ground optimal access point, and then selecting the optimal access channel;

when W is 001, selecting the ground best access point as the optimal access channel;

when W is 010, selecting a relay access point as an optimal access channel;

when W is 011, selecting the ground best access point as the optimal access channel;

when W is 100, selecting the relay access point as an optimal access channel;

when W is 101, selecting the ground best access point as the optimal access channel;

when W is 110, selecting the relay access point as an optimal access channel;

when W is 111, the terrestrial best access point and the relay access point are simultaneously selected as the optimal access channel.

7. The method for rapidly switching the service of the satellite-borne on-site measurement and control terminal to the idle state of the network according to claim 1, wherein the measurement and control service condition currently carried out by the satellite-ground measurement and control system is detected in real time, and a detection result is obtained and output, and the method comprises the following steps:

detecting the working states of a remote control channel and a measurement channel of a relevant service measurement and control responder and the working state of a satellite computer in real time to obtain a detection result;

carrying out operation on the detection result according to rules to obtain an operation result;

and providing the operation result and the spatial position information to the ground in a periodic reporting mode in real time, and guiding the ground service beam to be precisely pointed, so as to complete the quick response of the satellite-borne random measurement and control terminal to the burst measurement and control service.

8. The method for rapidly switching the service of the satellite-borne encounter-following measurement and control terminal to the idle state of the network according to claim 7, wherein the working states of a remote control channel and a measurement channel of a relevant service measurement and control responder and the working state of a satellite computer are detected in real time to obtain a detection result, and the method comprises the following steps:

after the burst measurement and control service is started, the satellite-borne random measurement and control terminal samples the physical layer states of other measurement and control transponders in the satellite-ground measurement and control system in real time through a satellite computer, the sampling rate is fs, and an uplink/forward channel signal carrier locking indication alpha is obtained_kPseudo code lock indication beta_kBit sync lock indication gamma_kFrame sync lock indication delta_kDecoding synchronization lock indication epsilon_k(ii) a Wherein alpha is_k、β_k、γ_k、δ_k、ε_kWhen the value is 1, locking is represented; alpha is alpha_k、β_k、γ_k、δ_k、ε_kWhen the value is 0, the locking is lost;

respectively according to different single machines and different channels, the alpha is converted into the alpha_k、β_k、γ_k、δ_kAnd ε_kPerforming multiplication to obtain Link _ Index_k；

The obtained Link _ Index of each sampling point_kAccumulating and averaging to obtain a total Link state Link _ Index;

any path of channel meets the following conditions: link _ Index is more than or equal to Thre _ cent, which indicates successful establishment of the uplink/forward service Link Thre _ cent.

9. The method for rapid traffic switching in idle state of network by satellite-borne observing and controlling terminal according to claim 8,

Link_Index_k＝α_k*β_k*γ_k*δ_k*ε_k。

wherein the content of the first and second substances,n denotes an accumulation point.

10. A satellite-borne random measurement and control terminal rapid business switching measurement and control method in an idle state of a network is characterized by comprising the following steps:

the burst measurement and control request module is used for initiating a measurement and control request through the satellite computer at any time and any position;

the business transfer measurement and control module is used for selecting an optimal access channel after the satellite-borne random measurement and control terminal receives the burst measurement and control request; starting a burst measurement and control service application through the selected optimal access channel to complete the service transfer operation of the satellite-borne random measurement and control terminal; after the business transfer operation is completed, crossing a measurement and control platform, and carrying out real-time detection on the measurement and control business condition currently carried out by the satellite and ground measurement and control system to obtain a detection result;

and the quick response module is used for providing the detection result and the spatial position information to the ground in a periodic reporting mode and guiding the ground service wave beam to point precisely, so that the quick response of the satellite-borne random measurement and control terminal to the burst measurement and control service is completed.

Technical Field

The invention belongs to the technical field of spacecraft random access measurement and control, and particularly relates to a method and a system for rapidly switching to business in an idle state of a network by a satellite-borne random measurement and control terminal.

Background

The existing measurement and control technology field has the following requirements that the random measurement and control terminal rapidly identifies the emergent measurement and control command sent by the satellite housekeeping in the whole process of network access, network on and network off, selects an access channel, performs service application operation, executes the service transfer operation of the satellite-borne terminal, and establishes, maintains and cancels the satellite-ground measurement and control service link after rapidly studying and judging the terminal state and the measurement and control service state according to the cross-layer query strategy.

The random measurement and control body has the following characteristics:

1. the air interface protocol is a novel satellite random access measurement and control system.

2. A space-ground integrated random access system comprises 3 ground panoramic beam random access measurement and control stations and a space-chain relay satellite SMA panoramic beam random access system.

3. The full-time and automatic measurement and control of the medium and low orbit aircrafts and the giant constellations are supported, and the workload of ground pipe transportation personnel is obviously reduced.

4. The system is compatible with conventional foundation, vehicle-mounted and ship-mounted measurement and control resources, the panoramic beam random access system solves the problems of measurement and control coverage and timeliness, and the conventional multi-platform measurement and control resources solve the problems of special user support and measurement and control hotspots.

The random measurement and control terminal has the following characteristics;

1. physical layer: the quick synchronous demodulation of the broadcasting signals of the same code and different frequency points between stations is supported; the method supports the rapid synchronous demodulation of the broadcast signals with the same frequency, the same code and different phases among the layered beams in the station; the two modes effectively improve the expandability of the multiple access in the random access protocol; aiming at the problem that the processing resources of the satellite-borne terminal are limited, a novel efficient polarization code coding scheme is developed.

2. Data link layer: the problem of intra-station mobility management of a measurement and control object is solved, measurement and control services are not interrupted when inter-station beam switching and inter-station signal switching are carried out, and users are not sensitive to switching.

3. Network layer: combines conventional multi-platform measurement and control resources, solves the problem of idle-state mobility management of the measurement and control object,

the emergency measurement and control of the satellite end and the ground end is supported, and the response time of the system is superior to 10S.

The burst measurement and control function of the satellite-borne terminal is mainly realized in the random measurement and control terminal, and the prior art cannot meet the requirement that the response time of the system is better than 10S.

Disclosure of Invention

The technical problem of the invention is solved: the method and the system for rapidly switching the satellite-borne random access measurement and control terminal to the service in the idle state of the network overcome the defects of the prior art, complete the autonomous initiation of the burst measurement and control request work of the spacecraft under a novel random access measurement and control system, rapidly complete the access channel selection at the satellite end, start the application operation of the burst measurement and control service, detect the working condition of a burst measurement and control service link in real time, and rapidly establish, maintain and cancel the burst measurement and control service link in cooperation with the ground, thereby completing the rapid response of the burst measurement and control of the satellite-borne random access measurement and control terminal.

In order to solve the technical problem, the invention discloses a satellite-borne random measurement and control terminal rapid service switching measurement and control method in a network idle state, which comprises the following steps:

when the satellite-borne random measurement and control terminal receives the burst measurement and control request, the optimal access channel is selected;

starting a burst measurement and control service application through the selected optimal access channel to complete the service transfer operation of the satellite-borne random measurement and control terminal;

and after the business transfer operation of the satellite-borne random measurement and control terminal is finished, the measurement and control platform is crossed, the measurement and control business condition currently developed by the satellite-ground measurement and control system is detected in real time, and a detection result is obtained and output.

In the above method for rapidly switching the satellite-borne random measurement and control terminal to the service in the idle state of the network, the burst measurement and control request is as follows: the satellite sends a measurement and control request through the satellite service computer at any time and any position.

In the method for rapidly switching the satellite-borne random measurement and control terminal to the service in the idle state of the network, a satellite initiating a burst measurement and control request meets the following two conditions:

condition 1: satellites in the coverage range of the space-foundation panoramic beam system;

condition 2: a satellite in an on-grid idle state.

In the method for measuring and controlling the satellite-borne random measurement and control terminal to rapidly switch to the service in the idle state of the network, the optimal access channel is selected, and the method comprises the following steps:

in the coverage area of the space-ground based panoramic beam system, continuously detecting an uplink broadcast signal by a satellite-borne random measurement and control terminal to obtain an uplink broadcast channel detection result;

determining the priority of the measurement and control event according to the priority indication of the sudden measurement and control event sent by the house-keeping computer;

acquiring optimal ground access point information;

and selecting an optimal access channel according to the detection result of the uplink broadcast channel, the priority of the measurement and control event and the optimal ground access point information.

In the above method for measuring and controlling the satellite-borne random measurement and control terminal to switch to the service rapidly in the idle state of the network, the optimal access channel is selected according to the detection result of the uplink broadcast channel, the priority of the measurement and control event and the optimal ground access point information, and the method includes:

determining a weight W1 according to the detection result of the uplink broadcast channel; determining a weight W2 according to the priority of the measurement and control event; determining a weight W3 according to the optimal ground access point information; determining the value of the total weight W according to the values of W1, W2 and W3; selecting an optimal access channel according to the determined value of the total weight W;

when the detection result of the uplink broadcast channel is successful, W1 is 1; when the detection result of the uplink broadcast channel is failure, W1 is 0; when the measurement and control event indicated by the measurement and control event priority is high priority, W2 is equal to 1; when the measurement and control event indicated by the measurement and control event priority is the common priority, W2 is equal to 0; when it is determined that the optimal terrestrial access point exists, W3 is 1; when it is determined that there is no optimal terrestrial access point, W3 is 0; W-W1 & W2& W3.

In the above method for measuring and controlling the on-board encounter-following measurement and control terminal to switch to the service rapidly in the idle state of the network, selecting the optimal access channel according to the determined value of the total weight W includes:

when W is 000, entering on-satellite timing waiting, waiting for detecting the uplink broadcast signal again, updating the ground optimal access point, and then selecting the optimal access channel;

when W is 001, selecting the ground best access point as the optimal access channel;

when W is 010, selecting a relay access point as an optimal access channel;

when W is 011, selecting the ground best access point as the optimal access channel;

when W is 100, selecting the relay access point as an optimal access channel;

when W is 101, selecting the ground best access point as the optimal access channel;

when W is 110, selecting the relay access point as an optimal access channel;

when W is 111, the terrestrial best access point and the relay access point are simultaneously selected as the optimal access channel.

In the above method for rapidly switching the satellite-borne random measurement and control terminal to the service in the idle state of the network, the measurement and control service condition currently developed by the satellite-ground measurement and control system is detected in real time, and a detection result is obtained and output, including:

detecting the working states of a remote control channel and a measurement channel of a relevant service measurement and control responder and the working state of a satellite computer in real time to obtain a detection result;

carrying out operation on the detection result according to rules to obtain an operation result;

and providing the operation result and the spatial position information to the ground in a periodic reporting mode in real time, and guiding the ground service beam to be precisely pointed, so as to complete the quick response of the satellite-borne random measurement and control terminal to the burst measurement and control service.

In the above method for rapidly switching the satellite-borne random measurement and control terminal to the business in the idle state of the network, the working states of the remote control channel and the measurement channel of the relevant business measurement and control responder and the working state of the satellite computer are detected in real time to obtain the detection result, which includes:

after the burst measurement and control service is started, the satellite-borne random measurement and control terminal samples the physical layer states of other measurement and control transponders in the satellite-ground measurement and control system in real time through a satellite computer, the sampling rate is fs, and an uplink/forward channel signal carrier locking indication alpha is obtained_kPseudo code lock indication beta_kBit sync lock indication gamma_kFrame sync lock indication delta_kDecoding synchronization lock indication epsilon_k(ii) a Wherein alpha is_k、β_k、γ_k、δ_k、ε_kWhen the value is 1, locking is represented; alpha is alpha_k、β_k、γ_k、δ_k、ε_kWhen the value is 0, the locking is lost;

respectively according to different single machines and different channels, the alpha is converted into the alpha_k、β_k、γ_k、δ_kAnd ε_kPerforming multiplication to obtain Link _ Index_k；

The obtained Link _ Index of each sampling point_kAccumulating and averaging to obtain a total Link state Link _ Index;

any path of channel meets the following conditions: link _ Index is more than or equal to Thre _ cent, which indicates successful establishment of the uplink/forward service Link Thre _ cent.

In the method for rapidly switching the satellite-borne random measurement and control terminal to the service in the idle state of the network,

Link_Index_k＝α_k*β_k*γ_k*δ_k*ε_k。

wherein the content of the first and second substances,n denotes an accumulation point.

Correspondingly, the invention also discloses a satellite-borne random measurement and control terminal on-network idle state fast service switching measurement and control method, which comprises the following steps:

the burst measurement and control request module is used for initiating a measurement and control request through the satellite computer at any time and any position;

the business transfer measurement and control module is used for selecting an optimal access channel after the satellite-borne random measurement and control terminal receives the burst measurement and control request; starting a burst measurement and control service application through the selected optimal access channel to complete the service transfer operation of the satellite-borne random measurement and control terminal; after the business transfer operation is completed, crossing a measurement and control platform, and carrying out real-time detection on the measurement and control business condition currently carried out by the satellite and ground measurement and control system to obtain a detection result;

and the quick response module is used for providing the detection result and the spatial position information to the ground in a periodic reporting mode and guiding the ground service wave beam to point precisely, so that the quick response of the satellite-borne random measurement and control terminal to the burst measurement and control service is completed.

The invention has the following advantages:

(1) the invention discloses a satellite-borne random measurement and control terminal rapid business transfer measurement and control scheme in a network idle state, which simplifies algorithm design under the conditions of not increasing the operation burden of the satellite-borne terminal and reducing the risk of sudden measurement and control misjudgment.

(2) The invention discloses a satellite-borne on-demand measurement and control terminal on-network idle state rapid service switching measurement and control scheme, which adopts a cross-platform service state real-time rapid detection method to rapidly detect the state of a service measurement and control link, informs the state information to the ground in real time through an access channel, and rapidly completes, establishes and cancels the measurement and control link in cooperation with the ground.

(3) The invention discloses a satellite-borne random access measurement and control terminal rapid business transfer measurement and control scheme in a network idle state, which enables the satellite-borne random access measurement and control terminal to firstly complete the burst measurement and control function of a satellite in a novel random access measurement and control system.

Drawings

FIG. 1 is a flowchart illustrating steps of a method for rapidly switching to a service in an idle state of a network by a satellite-borne encounter-following measurement and control terminal according to an embodiment of the present invention;

fig. 2 is a flowchart of selecting an optimal access channel according to an embodiment of the present invention;

FIG. 3 is a flowchart illustrating a cross-platform service status real-time rapid detection method according to an embodiment of the present invention;

fig. 4 is a block diagram of a satellite-borne encounter measurement and control terminal in the embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings.

One of the core ideas of the invention is that: the invention provides a brand new method for rapidly switching the satellite-borne random measurement and control terminal to service in an idle state of a network, which aims to meet the requirement of 10S of system response time. The method can realize that the satellite-borne random measurement and control terminal can quickly complete business transfer operation within 10S in case of a burst measurement and control request in the network stage within the coverage range of the space-ground-based panoramic beam system of the idle-state satellite, and establish an end-to-end reliable measurement and control link. The method is successfully applied to principle prototypes and normal samples, and the effectiveness and the feasibility of the method are fully verified in the whole satellite joint test and the satellite-ground butt joint.

As shown in fig. 1, in this embodiment, the method for measuring and controlling a satellite-borne encounter-following measurement and control terminal to rapidly switch to a service in an idle state of a network includes:

step 101, when the satellite borne random measurement and control terminal receives a burst measurement and control request, an optimal access channel is selected.

In this embodiment, the burst measurement and control request specifically includes: the satellite sends a measurement and control request through the satellite service computer at any time and any position. The satellite initiating the burst measurement and control request meets the following two conditions: condition 1: satellites in the coverage range of the space-foundation panoramic beam system; condition 2: a satellite in an on-grid idle state.

Preferably, as shown in fig. 2, the specific selection manner of the optimal access channel is as follows: in the coverage area of a space-ground based panoramic beam system, a satellite-borne random measurement and control terminal continuously detects an uplink broadcast signal (continuously performs capturing, tracking, demodulation, decoding and decryption operations on the broadcast signal, and finally successfully decrypts the broadcast signal to serve as a detection success mark) to obtain an uplink broadcast channel detection result; determining the priority of the measurement and control event according to the priority indication of the sudden measurement and control event sent by the house-keeping computer; acquiring optimal ground access point information (obtained by judging and estimating according to uplink broadcast signals, spatial information and the like by a satellite-borne random measurement and control terminal); and selecting an optimal access channel according to the detection result of the uplink broadcast channel, the priority of the measurement and control event and the optimal ground access point information.

Further, the weight W1 may be determined according to the detection result of the uplink broadcast channel; determining a weight W2 according to the priority of the measurement and control event; determining a weight W3 according to the optimal ground access point information; determining the value of the total weight W according to the values of W1, W2 and W3; and selecting the optimal access channel according to the determined value of the total weight W. When the detection result of the uplink broadcast channel is successful, W1 is 1; when the detection result of the uplink broadcast channel is failure, W1 is 0; when the measurement and control event indicated by the measurement and control event priority is high priority, W2 is equal to 1; when the measurement and control event indicated by the measurement and control event priority is the common priority, W2 is equal to 0; when it is determined that the optimal terrestrial access point exists, W3 is 1; when it is determined that there is no optimal terrestrial access point, W3 is 0; W-W1 & W2& W3.

Further, as shown in table 1:

W1	W2	W3	W＝W1&W2&W3	optimal channel selection
					0	0	0	000	Enter on-satellite timing wait
0	0	1	001	Selecting the best access point on the ground
					0	1	0	010	Selecting relay access points
0	1	1	011	Selecting the best access point on the ground
					1	0	0	100	Selecting relay access points
1	0	1	101	Selecting the best access point on the ground
					1	1	0	110	Selecting relay access points
1	1	1	111	Simultaneous selection of terrestrial best access point and relay access point

TABLE 1 schematic diagram of optimal channel selection

It can be seen that, when W is 000, the satellite enters on-satellite timing waiting, waits for re-detection of the uplink broadcast signal, and selects the optimal access channel after updating the ground optimal access point; when W is 001, selecting the ground best access point as the optimal access channel; when W is 010, selecting a relay access point as an optimal access channel; when W is 011, selecting the ground best access point as the optimal access channel; when W is 100, selecting the relay access point as an optimal access channel; when W is 101, selecting the ground best access point as the optimal access channel; when W is 110, selecting the relay access point as an optimal access channel; when W is 111, the terrestrial best access point and the relay access point are simultaneously selected as the optimal access channel.

And 102, starting a burst measurement and control service application through the selected optimal access channel, and completing service transfer operation of the satellite-borne random measurement and control terminal.

And 103, after the business transfer operation of the satellite-borne on-site measurement and control terminal is completed, crossing the measurement and control platform, detecting the current measurement and control business condition of the satellite-ground measurement and control system in real time, and obtaining and outputting a detection result.

In this embodiment, as shown in fig. 3, after the service transfer operation of the satellite-borne on-site measurement and control terminal is completed, the measurement and control platform is crossed to perform real-time detection on the working states of the remote control channel and the measurement channel of the relevant service measurement and control transponder and the working state of the satellite computer, so as to obtain a detection result; carrying out operation on the detection result according to rules to obtain an operation result; and finally, providing the operation result and the spatial position information to the ground in a periodic reporting mode in real time, and guiding the ground service beam to be precisely pointed, thereby completing the quick response of the satellite-borne random measurement and control terminal to the burst measurement and control service.

Preferably, after the burst measurement and control service is started, the satellite-borne random measurement and control terminal samples the physical layer states of other measurement and control transponders in the satellite-ground measurement and control system in real time through a satellite computer, the sampling rate is fs, and an uplink/forward channel signal carrier locking indication alpha is obtained_kPseudo code lock indication beta_kBit sync lock indication gamma_kFrame sync lock indication delta_kDecoding synchronization lock indication epsilon_k(ii) a Respectively according to different single machines and different channels, the alpha is converted into the alpha_k、β_k、γ_k、δ_kAnd ε_kPerforming multiplication to obtain Link _ Index_k(ii) a The obtained Link _ Index of each sampling point_kAccumulating and averaging to obtain a total Link state Link _ Index; any path of channel meets the following conditions: link _ Index is more than or equal to Thre _ cent, which indicates successful establishment of the uplink/forward service Link Thre _ cent. Wherein alpha is_k、β_k、γ_k、δ_k、ε_kWhen the value is 1, locking is represented; alpha is alpha_k、β_k、γ_k、δ_k、ε_kWhen the value is 0, the locking is lost.

Further:

Link_Index_k＝α_k*β_k*γ_k*δ_k*ε_k。

wherein the content of the first and second substances,n denotes an accumulation point.

In this embodiment, the ground checks and confirms the link state of the burst measurement and control service in real time according to the real-time operation result and the spatial position information sent by the satellite-borne random measurement and control terminal, and the real-time operation result and the spatial position information are also used as beacons to perform service beam guidance.

In a preferred embodiment of the present invention, as shown in fig. 4, the satellite-borne encounter measurement and control terminal may specifically include: the system comprises a radio frequency broadband receiving channel, a radio frequency broadband transmitting channel, a power supply, an access control unit, a measurement and control service unit and the like. The radio frequency broadband receiving channel receives an uplink broadcast signal and an uplink/forward service signal sent by an antenna microwave network; down-converting the received uplink broadcast signal and uplink/forward service signal to an intermediate frequency signal, and sending the intermediate frequency signal to an access control unit; the access control unit demodulates the received intermediate frequency signal, sends a control instruction according to the demodulation information and starts a measurement and control service unit; after the measurement and control service unit sends service state remote measurement information to the access control unit in real time, the access control unit forms a downlink/reverse access application frame and sends the downlink/reverse access application frame to an antenna through a radio frequency broadband channel; meanwhile, the measurement and control service unit collects the whole satellite telemetering information in real time to form a downlink/return service frame, and the downlink/return service frame is sent to an antenna through a radio frequency broadband channel. The invention provides a brand-new satellite-borne random measurement and control terminal rapid business switching measurement and control method in an idle state of a network, which is mainly completed in an access control unit of the satellite-borne random measurement and control terminal.

On the basis of the embodiment, the invention also discloses a method for rapidly switching the service of the satellite-borne random measurement and control terminal to the idle state of the network, which comprises the following steps: the burst measurement and control request module is used for initiating a measurement and control request through the satellite computer at any time and any position; the business transfer measurement and control module is used for selecting an optimal access channel after the satellite-borne random measurement and control terminal receives the burst measurement and control request; starting a burst measurement and control service application through the selected optimal access channel to complete the service transfer operation of the satellite-borne random measurement and control terminal; after the business transfer operation is completed, crossing a measurement and control platform, and carrying out real-time detection on the measurement and control business condition currently carried out by the satellite and ground measurement and control system to obtain a detection result; and the quick response module is used for providing the detection result and the spatial position information to the ground in a periodic reporting mode and guiding the ground service wave beam to point precisely, so that the quick response of the satellite-borne random measurement and control terminal to the burst measurement and control service is completed.

For the system embodiment, since it corresponds to the method embodiment, the description is relatively simple, and for the relevant points, refer to the description of the method embodiment section.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.

Those skilled in the art will appreciate that the invention may be practiced without these specific details.