阅读说明：本技术 用于深空探测的高集成度高可靠高稳频率源设计方法及系统 (High-integration high-reliability high-stability frequency source design method and system for deep space exploration ) 是由 李金岳 张玉花 朱新波 何春黎 陈晓 王民建 于 2021-08-18 设计创作，主要内容包括：本发明提供了一种用于深空探测的高集成度高可靠高稳频率源设计方法及系统,包括：步骤S1：高稳频率源产生多路高稳频率基准信号；步骤S2：多路高稳频率基准信号两两合路后进行滤波处理,形成多路信号,为多台单机提供高稳定度的频率基准信号。本发明设计的高稳频率源使用1路高稳晶振输出,在高集成度和高可靠性设计的基础上,为多台单机提供高稳定度的外部输入频率基准信号。(The invention provides a high-integration-level, high-reliability and high-stability frequency source design method and a system for deep space exploration, which comprise the following steps: step S1: the high frequency stabilization source generates a plurality of paths of high frequency stabilization reference signals; step S2: the multi-path high-stability frequency reference signals are combined in pairs and then filtered to form multi-path signals, and the multi-path signals provide high-stability frequency reference signals for a plurality of single machines. The high-stability frequency source designed by the invention uses 1-path high-stability crystal oscillator for output, and provides high-stability external input frequency reference signals for a plurality of single machines on the basis of high integration and high reliability design.)

1. A high-integration high-reliability high-frequency stabilization source design method for deep space exploration is characterized by comprising the following steps:

step S1: the high frequency stabilization source generates a plurality of paths of high frequency stabilization reference signals;

step S2: the multi-path high-stability frequency reference signals are combined in pairs and then filtered to form multi-path signals, and the multi-path signals provide high-stability frequency reference signals for a plurality of single machines.

2. The design method of the high-integration high-reliability high-frequency-stabilization source for deep space exploration according to claim 1, wherein the step S1 adopts: the high stable frequency source uses a plurality of high stable crystal oscillators to perform cold backup mutually, and generates a plurality of paths of high stable frequency reference signals through the power divider.

3. The design method of the high-integration high-reliability high-frequency-stabilization source for deep space exploration according to claim 1, wherein the step S2 adopts: and the multi-path high-stability frequency reference signal is subjected to combiner, isolation amplifier, low-pass filtering and pi-matching attenuation processing to obtain a high-stability frequency reference signal.

4. The design method of the highly integrated, highly reliable and highly stable frequency source for deep space exploration according to claim 1, wherein said providing a highly stable frequency reference signal for multiple single machines comprises: and a high-stability frequency reference signal is provided for a deep space transponder on a detector, a UHF relay communication machine and an integrated electronic computer.

5. The method according to claim 2, wherein the stability of the high-stability crystal oscillator is 1 × 10 or more^-12/s。

6. A highly integrated, highly reliable, and frequency-stabilized source design system for deep space exploration, comprising:

module M1: the high frequency stabilization source generates a plurality of paths of high frequency stabilization reference signals;

module M2: the multi-path high-stability frequency reference signals are combined in pairs and then filtered to form multi-path signals, and the multi-path signals provide high-stability frequency reference signals for a plurality of single machines.

7. The highly integrated, highly reliable and highly frequency-stable source design system for deep space exploration according to claim 6, wherein said module M1 employs: the high stable frequency source uses a plurality of high stable crystal oscillators to perform cold backup mutually, and generates a plurality of paths of high stable frequency reference signals through the power divider.

8. The highly integrated, highly reliable and highly frequency-stable source design system for deep space exploration according to claim 6, wherein said module M2 employs: and the multi-path high-stability frequency reference signal is subjected to combiner, isolation amplifier, low-pass filtering and pi-matching attenuation processing to obtain a high-stability frequency reference signal.

9. The highly integrated, highly reliable and highly frequency-stable source design system for deep space exploration according to claim 6, wherein in said frequency reference signal providing high stability for multiple standalone machines: and a high-stability frequency reference signal is provided for a deep space transponder on a detector, a UHF relay communication machine and an integrated electronic computer.

10. The highly-integrated highly-reliable highly-frequency-stabilized source design system for deep space exploration according to claim 7, wherein the stability of said highly-stabilized crystal oscillator is 1 x 10 or more^-12/s。

Technical Field

The invention relates to the technical field of aerospace engineering, in particular to a high-integration-level, high-reliability and high-stability frequency source design method and system for deep space exploration.

Background

Patent document CN2517173Y (application No. 01256987.9) discloses a combined switch filter, high-stability, low-noise, high-speed frequency synthesizer, which uses a high-stability crystal oscillator to form a specific circuit combination by organic combination with a comb spectrum generator, a distributor, a filter, an amplifier, a re-filter link, a single-pole multi-throw switch, a final amplifier and a control circuit. The patent mainly relates to that a frequency signal sent by a crystal oscillator passes through a comb spectrum generator, then is synthesized and output, and the key design is on a synthesizer, and the multipath output of the high-stability crystal oscillator is not involved.

Patent document CN101862511B (application number: 201010165944.6) discloses a multichannel high-precision phase control signal generating device, which utilizes a programmable read only memory to generate a customized special circuit in an FPGA field programmable gate array circuit through VHDL language programming, and comprises a phase shift module, a phase decoding module, an address decoding module and a plurality of multi-way gates; the high-precision active crystal oscillator is used as an information source, each multi-channel gate works in parallel, receives a phase control signal of an upper computer and outputs a multi-channel square wave signal with a specific phase. After the square wave signal output by the invention is accessed into a power amplifier for resonance, a sine wave signal with the same frequency and phase as the original output signal is generated and is used for an excitation signal of an ultrasonic transducer array element in a phase control type high-intensity focused ultrasound treatment system; the crystal oscillator frequency is determined by the resonant frequency of the ultrasonic transducer array element and the phase control precision requirement. The patent takes a high-precision active crystal oscillator as an information source, and outputs a multi-channel specific phase square wave signal through the FPGA, which is inconsistent with the method for generating the independent channel.

Patent document CN102752249B (application No. 201110100030.6) discloses a signal detection device and method. In the invention, as the demodulation output end of the costas loop in-phase branch circuit is not only coupled with the bit synchronization device, but also needs to be coupled with the code phase tracking device, the code phase tracking device is utilized to detect the change condition of the bit period of the biphase symbol data in real time, and when the code phase is found to be deviated, the error correction of the code phase is carried out in time so as to ensure the decoding correctness of the biphase symbol data. The method realizes symbol bit period monitoring and correction by using code phase tracking, solves the problem of stability of the crystal oscillator, and does not relate to multi-path output of a high-stability crystal oscillator.

Patent document CN103368638A (application number: 201210089364.2) discloses a measurement and control communication method and system for a deep space probe, the method is used for completing information interaction between a ground station and the deep space probe and probe orbit determination, and the method comprises the following steps: four microwave radio signal channels are arranged between the deep space probe and the ground station by adopting an uplink carrier frequency and a downlink carrier frequency, wherein the four microwave radio signal channels comprise a remote control command channel, a remote measurement data channel, a scientific data channel and a VLBI (very long balanced radio interface) track measurement beacon channel; combining three channel signals of engineering telemetering data, scientific detection data and VLBI (very high performance bi-directional) rail measurement beacons into a downlink transmission signal, and finally adopting a transmitter to finish the sending function of all downlink signals; and generating an orbit measurement beacon by using a frequency reference signal of a high-stability frequency source, transmitting the orbit measurement beacon to a ground VLBI measurement network, and completing an orbit measurement task of the deep space probe by the ground VLBI measurement network in a Doppler frequency speed measurement and signal interference angle measurement mode.

Before the application of the invention, a satellite single machine is only provided with an internal crystal oscillator with low stability and small volume as a clock source, the short-term stability of the internal crystal oscillator is only 1 multiplied by 10 < -9 >/s magnitude, the short-term stability of the downlink frequency required by the single machines such as a deep space responder, a UHF relay communicator and a comprehensive electronic computer of a mars detector is as high as 1 multiplied by 10 < -12 >/s, and the original crystal oscillator can meet the requirement of conventional deep space communication but can not meet the use requirement of the deep space detector, so that a high-frequency-stabilization source with high integration and high reliability is designed, and a frequency reference signal is provided for a plurality of single machines.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a high-integration-level, high-reliability and high-stability frequency source design method and system for deep space exploration.

The invention provides a high-integration high-reliability high-frequency stabilization source design method for deep space exploration, which comprises the following steps:

step S1: the high frequency stabilization source generates a plurality of paths of high frequency stabilization reference signals;

step S2: the multi-path high-stability frequency reference signals are combined in pairs and then filtered to form multi-path signals, and the multi-path signals provide high-stability frequency reference signals for a plurality of single machines.

Preferably, the step S1 adopts: the high stable frequency source uses a plurality of high stable crystal oscillators to perform cold backup mutually, and generates a plurality of paths of high stable frequency reference signals through the power divider.

Preferably, the step S2 adopts: and the multi-path high-stability frequency reference signal is subjected to combiner, isolation amplifier, low-pass filtering and pi-matching attenuation processing to obtain a high-stability frequency reference signal.

Preferably, in the frequency reference signal providing high stability for the plurality of stand-alone units: and a high-stability frequency reference signal is provided for a deep space transponder on a detector, a UHF relay communication machine and an integrated electronic computer.

Preferably, the stability of the high-stability crystal oscillator is 1 × 10 or more^-12/s。

The invention provides a high-integration high-reliability high-frequency stabilization source design system for deep space exploration, which comprises:

module M1: the high frequency stabilization source generates a plurality of paths of high frequency stabilization reference signals;

module M2: the multi-path high-stability frequency reference signals are combined in pairs and then filtered to form multi-path signals, and the multi-path signals provide high-stability frequency reference signals for a plurality of single machines.

Preferably, the module M1 employs: the high stable frequency source uses a plurality of high stable crystal oscillators to perform cold backup mutually, and generates a plurality of paths of high stable frequency reference signals through the power divider.

Preferably, the module M2 employs: and the multi-path high-stability frequency reference signal is subjected to combiner, isolation amplifier, low-pass filtering and pi-matching attenuation processing to obtain a high-stability frequency reference signal.

Preferably, in the frequency reference signal providing high stability for the plurality of stand-alone units: and a high-stability frequency reference signal is provided for a deep space transponder on a detector, a UHF relay communication machine and an integrated electronic computer.

Preferably, the stability of the high-stability crystal oscillator is 1 × 10 or more^-12/s。

Compared with the prior art, the invention has the following beneficial effects:

1. the high-stability frequency source designed by the invention uses 1-path high-stability crystal oscillator for output, and provides high-stability external input frequency reference signals for a plurality of single machines on the basis of high integration and high reliability design;

2. the invention uses 2 mutually cold-backed high-stability crystal oscillators to provide high-stability frequency reference signals for 4 single machines, thereby improving the integration level and the reliability of the system.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic diagram of a high frequency stabilization source interface relationship.

Fig. 2 is a schematic diagram of a highly stable frequency source.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

Example 1

The invention provides a high-integration high-reliability high-frequency stabilization source design method for deep space exploration, which comprises the following steps:

step S1: the high frequency stabilization source generates a plurality of paths of high frequency stabilization reference signals;

step S2: the multi-path high-stability frequency reference signals are combined in pairs and then filtered to form multi-path signals, and the multi-path signals provide high-stability frequency reference signals for a plurality of single machines.

Specifically, the step S1 employs: the high stable frequency source uses a plurality of high stable crystal oscillators to perform cold backup mutually, and generates a plurality of paths of high stable frequency reference signals through the power divider.

Specifically, the step S2 employs: and the multi-path high-stability frequency reference signal is subjected to combiner, isolation amplifier, low-pass filtering and pi-matching attenuation processing to obtain a high-stability frequency reference signal.

Specifically, in the frequency reference signal providing high stability to the plurality of stand-alone units: and a high-stability frequency reference signal is provided for a deep space transponder on a detector, a UHF relay communication machine and an integrated electronic computer.

Specifically, the stability of the high-stability crystal oscillator is more than or equal to 1 multiplied by 10^-12/s。

The invention provides a high-integration high-reliability high-frequency stabilization source design system for deep space exploration, which comprises:

module M1: the high frequency stabilization source generates a plurality of paths of high frequency stabilization reference signals;

module M2: the multi-path high-stability frequency reference signals are combined in pairs and then filtered to form multi-path signals, and the multi-path signals provide high-stability frequency reference signals for a plurality of single machines.

Specifically, the module M1 employs: the high stable frequency source uses a plurality of high stable crystal oscillators to perform cold backup mutually, and generates a plurality of paths of high stable frequency reference signals through the power divider.

Specifically, the module M2 employs: and the multi-path high-stability frequency reference signal is subjected to combiner, isolation amplifier, low-pass filtering and pi-matching attenuation processing to obtain a high-stability frequency reference signal.

Specifically, in the frequency reference signal providing high stability to the plurality of stand-alone units: and a high-stability frequency reference signal is provided for a deep space transponder on a detector, a UHF relay communication machine and an integrated electronic computer.

Specifically, the stability of the high-stability crystal oscillator is more than or equal to 1 multiplied by 10^-12/s。

Example 2

Example 2 is a preferred example of example 1

The application of the present invention is described below with reference to fig. 1 and 2 of the drawings.

The high-integration high-reliability high-stability frequency source designed by the invention mainly realizes the output of 4 paths of high-stability reference frequency sources.

A reference frequency signal is generated by a constant-temperature crystal oscillator A, B, a power divider generates a plurality of paths of signals, the signals are combined and output pairwise and then sequentially pass through circuits such as an isolation amplifier, a low-pass filter and pi matching attenuation, and finally high-stability 4-path quasi-frequency is output. The isolation amplifier ensures the amplitude and isolation of 4 paths of output signals, the filter circuit inhibits harmonics and clutter of the 4 paths of output signals, and the pi matching attenuation ensures standing waves of an output interface.

In view of the above, the present invention designs a design method of a high-stability frequency source, which uses 2 high-stability crystal oscillators, performs mutual cold backup to generate 4 paths of high-stability frequency reference signals, and can provide high-stability frequency reference signals for 4 single machines. On the premise of high integration and high reliability, the requirement of the Mars detector on the high frequency stabilization crystal oscillator is met.

Example 3

Example 3 is example 2 and/or example 1

The device aims to solve the use requirement of a Mars detector on a high-stability clock. The invention designs a high-integration high-reliability high-stability frequency source design method for deep space exploration, and provides a high-stability clock reference signal for a plurality of single machines.

A high-integration high-reliability high-frequency-stability source design method and a use method for deep space exploration are provided, wherein 2 high-stability crystal oscillators are used in the high-frequency-stability source, mutual cold backup is carried out, 4 paths of high-frequency-stability reference signals are respectively generated through power dividers, and then the generated signals are respectively combined in pairs and filtered to form independent 4 paths of signals, so that the high-stability frequency reference signals are provided for 4 single machines.

Specifically, the high-stability crystal oscillator has extremely high stability, and at least reaches more than 1 x 10 < -12 >/s.

Specifically, the crystal oscillator 1 and the crystal oscillator 2 are independent frequency sources and are cold backups for each other.

Specifically, the combiner has high isolation, and the combiner input signals are respectively from two different high-stability crystal oscillators.

Specifically, a high-stability frequency source with high integration is used for providing a high-stability clock frequency source for single machines such as a deep space transponder, a UHF relay communication machine and an integrated electronic computer on a detector.

Those skilled in the art will appreciate that, in addition to implementing the systems, apparatus, and various modules thereof provided by the present invention in purely computer readable program code, the same procedures can be implemented entirely by logically programming method steps such that the systems, apparatus, and various modules thereof are provided in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system, the device and the modules thereof provided by the present invention can be considered as a hardware component, and the modules included in the system, the device and the modules thereof for implementing various programs can also be considered as structures in the hardware component; modules for performing various functions may also be considered to be both software programs for performing the methods and structures within hardware components.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.