阅读说明：本技术 基于卫星系统的海洋大气波导势能评估装置及方法 (Device and method for evaluating ocean atmospheric waveguide potential energy based on satellite system ) 是由 田斌 孙立东 范润龙 察豪 何小光 陈子豪 张厶允 于 2021-06-18 设计创作，主要内容包括：本发明公开了一种基于卫星系统的海洋大气波导势能评估装置及方法,评估装置中,左旋圆极化天线和右旋圆极化天线分别用于接收经海面散射及高角度直射或反射的卫星信号；卫星信号高精度接收机模块接收卫星信号,并进行信号处理,得到原始观测信息；数据采集和存储模块接收并存储原始观测信息,并转载至主机模块；主机模块中的数据处理模块根据原始观测信息计算信号经过电离层和对流层的延迟量,从而反演得到大气波导势能。通过本发明的技术方案,能够反演各个类型的大气波导势能以评估大范围内空间维度上的海洋大气折射环境体,且不受地理因素影响,可岸基、可船载、可随身携带,无需信号源,可对海洋大气折射环境进行无源评估。(The invention discloses a satellite system-based ocean atmospheric waveguide potential energy evaluation device and a satellite system-based ocean atmospheric waveguide potential energy evaluation method, wherein in the evaluation device, a left-hand circularly polarized antenna and a right-hand circularly polarized antenna are respectively used for receiving satellite signals scattered by the sea surface and directly transmitted or reflected by a high angle; the satellite signal high-precision receiver module receives a satellite signal and performs signal processing to obtain original observation information; the data acquisition and storage module receives and stores original observation information and transfers the original observation information to the host module; and a data processing module in the host module calculates the delay amount of the signal passing through the ionosphere and the troposphere according to the original observation information, so that the atmospheric waveguide potential energy is obtained through inversion. Through the technical scheme of the invention, the ocean atmospheric refraction environment body in large-range spatial dimension can be evaluated by inverting each type of atmospheric waveguide potential energy, is not influenced by geographic factors, can be shore-based, shipborne and portable, does not need a signal source, and can be passively evaluated.)

1. A marine atmospheric waveguide potential energy assessment device based on a satellite system is characterized by comprising: the satellite signal receiving antenna module, the satellite signal high-precision receiver module, the data acquisition and storage module, the host module and the power supply module;

the satellite signal receiving antenna module comprises a left-hand circularly polarized antenna and a right-hand circularly polarized antenna, the left-hand circularly polarized antenna is used for receiving satellite signals scattered by the sea surface, and the right-hand circularly polarized antenna is used for receiving high-angle direct or reflected satellite signals;

the satellite signal high-precision receiver module is connected with the satellite signal receiving antenna module and is used for receiving the satellite signals sent by the satellite signal receiving antenna module and carrying out signal processing on the satellite signals to obtain original observation information of the satellite signals;

the data acquisition and storage module receives and stores the original observation information in the satellite signal high-precision receiver module and transfers the original observation information to the host module;

the host module comprises a data processing module, and the data processing module calculates the delay amount of the signal passing through the ionosphere and the troposphere according to the original observation information so as to obtain atmospheric waveguide potential energy through inversion;

the power supply module supplies power to the data acquisition and storage module and the host module.

2. The satellite system based marine atmospheric waveguide potential energy assessment device according to claim 1, wherein the satellite signal high precision receiver module comprises an interface board card and a core positioning board card;

the interface board card is connected with the satellite signal receiving antenna module, receives the satellite signal sent by the satellite signal receiving antenna module and transmits the satellite signal to the core positioning board card;

the core positioning board card demodulates, despreads and performs navigation calculation on the satellite signals to obtain the position of the core positioning board card, and simultaneously obtains power, pseudo range and carrier phase observed values of the satellite signals as original observation information.

3. The satellite system-based marine atmospheric waveguide potential energy assessment device according to claim 2, wherein the data acquisition and storage module comprises a data acquisition unit and a data storage unit, and the data acquisition unit receives the original observation information output by the satellite signal high-precision receiver module, sends the original observation information to the data storage unit for storage, and transfers the original observation information to the host module for data processing.

4. The satellite system-based marine atmospheric waveguide potential energy assessment device according to claim 3, wherein the host module further comprises a ruggedized industrial personal computer and a touch screen type terminal display, the data processing module is loaded in the ruggedized industrial personal computer, the data processing module is connected with the data acquisition and storage module through an interface of the ruggedized industrial personal computer, the data processing module is connected with the touch screen type terminal display, and the touch screen type terminal display performs visual display on data analyzed and processed by the data processing module and receives an external touch instruction at the same time.

5. The satellite system based marine atmospheric waveguide potential energy assessment device of claim 1, wherein said power module comprises a regulated ac power supply and a dc ac power supply, said regulated ac power supply providing ac power to said host module and said dc ac power supply providing dc power to said data acquisition and storage module.

6. The satellite system-based marine atmospheric waveguide potential energy assessment device according to claim 1, wherein the data processing module cancels out the delay amount of the signal passing through the ionosphere in the original observation information, extracts the delay amount of the signal passing through the troposphere, extracts the air pressure, temperature and water vapor information contained in the signal, performs inversion to obtain an atmospheric correction refractive index profile diagram in the troposphere, and further performs inversion to obtain different types of atmospheric waveguides.

7. The satellite system based marine atmospheric waveguide potential energy assessment device according to claim 1, wherein a low noise amplification module is built in the left-hand circular polarized antenna and the right-hand circular polarized antenna, and the low noise amplification module employs a front-end and multi-stage filter to filter out interference signals.

8. A satellite system-based marine atmospheric waveguide potential energy assessment method applied to the satellite system-based marine atmospheric waveguide potential energy assessment device according to any one of claims 1 to 7, the method comprising:

receiving satellite signals scattered by the sea surface through a left-handed circularly polarized antenna of a satellite signal receiving antenna, and receiving high-angle direct or reflected satellite signals through a right-handed circularly polarized antenna;

sending satellite signals received by the left-hand circularly polarized antenna and the right-hand circularly polarized antenna to a satellite signal high-precision receiver module for signal processing to obtain original observation information of the satellite signals;

receiving and storing the original observation information through a data acquisition and storage module, and transferring the original observation information to a host module;

and performing data processing on the original observation information through an information processing module of the host module, and calculating the delay amount of the signal passing through an ionized layer and a troposphere so as to obtain atmospheric waveguide potential energy through inversion.

9. The method for evaluating the marine atmospheric waveguide potential energy based on the satellite system according to claim 8, wherein the specific process of performing data processing on the original observation information through the information processing module of the host module, and calculating the delay amount of the signal passing through the ionosphere and the troposphere so as to obtain the atmospheric waveguide potential energy through inversion comprises:

offsetting the delay of the signal in the original observation information through the ionized layer;

extracting the delay amount of the signal passing through the troposphere;

extracting the air pressure, temperature and water vapor information contained in the signal;

and inverting to obtain an atmospheric correction refractive index profile diagram in the troposphere, and further inverting to obtain different types of atmospheric waveguides.

10. The method for estimating the potential energy of the marine atmospheric waveguide based on the satellite system according to claim 8, wherein the specific process of the satellite signal high-precision receiver module performing signal processing to obtain the original observation information of the satellite signal comprises:

demodulating and despreading the satellite signal, and performing navigation calculation to obtain the position of the satellite signal;

and calculating power, pseudo range and carrier phase observation values according to the satellite signals to serve as original observation information.

Technical Field

The invention relates to the technical field of marine atmospheric refraction environment body evaluation, in particular to a satellite system-based marine atmospheric waveguide potential energy evaluation device and a satellite system-based marine atmospheric waveguide potential energy evaluation method.

Background

The research on the characteristics of the marine atmospheric environment has extremely important strategic significance and application prospect for all military activities and civil communication at sea, and has important reference and application value for the exertion of the combat performance of an electronic weapon system. The detection of the atmospheric waveguide can not only improve the anti-interference capability of an electronic information weapon system and prevent the fighting action of the own party in a complex electromagnetic environment from being influenced, but also can fully utilize the propagation characteristic of the atmospheric waveguide to carry out low-altitude penetration and improve the concealment and penetration of anti-ship cruise missile flight and other important applications; the method has great theoretical and practical significance for the design and working performance evaluation of radio systems such as radars, communication and detection of microwave frequency bands in China, the management of radio wave frequency spectrums and the like.

At present, methods for performing real-time assessment and monitoring on atmospheric waveguides at home and abroad are mainly divided into a direct measurement technology, a model diagnosis technology and an inversion monitoring technology. Among the inversion monitoring techniques, the inversion monitoring technique based on Global Navigation Satellite System (GNSS) is the main research method of the present invention, namely the beidou Satellite Navigation System independently developed in our country. Although researchers at home and abroad develop a lot of researches based on the global navigation satellite system inversion monitoring technology and enrich the monitoring means of the atmospheric waveguide, the method still has defects in practical application, and the specific expression is as follows: firstly, certain requirements are placed on a satellite and a receiving position, and meanwhile, a high-sensitivity receiver is needed, which cannot be met by the conventional ship-based receiver; and secondly, the inversion accuracy of the low-altitude atmospheric waveguide is low, and high-resolution atmospheric waveguide information in the vertical direction of the medium and low altitude cannot be provided.

Disclosure of Invention

Aiming at the problems, the invention provides a device and a method for evaluating marine atmospheric waveguide potential energy based on a satellite system, which can receive and analyze scattered, reflected and direct signals in a large-scale space dimension by receiving navigation satellite signals from different directions, and invert the atmospheric waveguide potential energy and characteristic quantity of each type so as to evaluate a marine atmospheric refraction environment body in the large-scale space dimension and the efficiency of the marine atmospheric refraction environment body on electromagnetic wave propagation; the equipment is not influenced by geographical factors, can be shore-based, shipborne and portable, does not need a signal source, and can carry out passive evaluation on the marine atmospheric refraction environment.

In order to achieve the above object, the present invention provides a device for evaluating the potential energy of an ocean atmospheric waveguide based on a satellite system, comprising: the satellite signal receiving antenna module, the satellite signal high-precision receiver module, the data acquisition and storage module, the host module and the power supply module; the satellite signal receiving antenna module comprises a left-hand circularly polarized antenna and a right-hand circularly polarized antenna, the left-hand circularly polarized antenna is used for receiving satellite signals scattered by the sea surface, and the right-hand circularly polarized antenna is used for receiving high-angle direct or reflected satellite signals; the satellite signal high-precision receiver module is connected with the satellite signal receiving antenna module and is used for receiving the satellite signals sent by the satellite signal receiving antenna module and carrying out signal processing on the satellite signals to obtain original observation information of the satellite signals; the data acquisition and storage module receives and stores the original observation information in the satellite signal high-precision receiver module and transfers the original observation information to the host module; the host module comprises a data processing module, and the data processing module calculates the delay amount of the signal passing through the ionosphere and the troposphere according to the original observation information so as to obtain atmospheric waveguide potential energy through inversion; the power supply module supplies power to the data acquisition and storage module and the host module.

In the above technical solution, preferably, the satellite signal high-precision receiver module includes an interface board card and a core positioning board card; the interface board card is connected with the satellite signal receiving antenna module, receives the satellite signal sent by the satellite signal receiving antenna module and transmits the satellite signal to the core positioning board card; the core positioning board card demodulates, despreads and performs navigation calculation on the satellite signals to obtain the position of the core positioning board card, and simultaneously obtains power, pseudo range and carrier phase observed values of the satellite signals as original observation information.

In the above technical solution, preferably, the data acquisition and storage module includes a data collector and a data memory, and the data collector receives the original observation information output by the satellite signal high-precision receiver module, sends the original observation information to the data memory for storage, and transfers the original observation information to the host module for data processing.

In the above technical solution, preferably, the host module further includes a ruggedized industrial personal computer and a touch screen type terminal display, the data processing module is loaded in the ruggedized industrial personal computer, the data processing module is connected to the data acquisition and storage module through an interface of the ruggedized industrial personal computer, the data processing module is connected to the touch screen type terminal display, and the touch screen type terminal display performs visual display on data analyzed and processed by the data processing module and receives an external touch instruction at the same time.

In the above technical solution, preferably, the power module includes an ac voltage-stabilized power supply and an ac dc power supply, the ac voltage-stabilized power supply provides ac power for the host module, and the ac dc power supply provides dc power for the data acquisition and storage module.

In the above technical solution, preferably, the data processing module cancels the delay of the signal in the original observation information through the ionosphere, extracts the delay of the signal through the troposphere, extracts the air pressure, temperature and water vapor information contained in the signal, and performs inversion to obtain an atmospheric modified refractive index profile map in the troposphere, thereby performing inversion to obtain different types of atmospheric waveguides.

In the above technical solution, preferably, a low noise amplification module is disposed in each of the left-hand circularly polarized antenna and the right-hand circularly polarized antenna, and the low noise amplification module employs a pre-filter and a multi-stage filter to filter out interference signals.

The invention also provides a satellite system-based marine atmospheric waveguide potential energy assessment method, which is applied to the satellite system-based marine atmospheric waveguide potential energy assessment device provided by any one of the above technical schemes, and comprises the following steps: receiving satellite signals scattered by the sea surface through a left-handed circularly polarized antenna of a satellite signal receiving antenna, and receiving high-angle direct or reflected satellite signals through a right-handed circularly polarized antenna; sending satellite signals received by the left-hand circularly polarized antenna and the right-hand circularly polarized antenna to a satellite signal high-precision receiver module for signal processing to obtain original observation information of the satellite signals; receiving and storing the original observation information through a data acquisition and storage module, and transferring the original observation information to a host module; and performing data processing on the original observation information through an information processing module of the host module, and calculating the delay amount of the signal passing through an ionized layer and a troposphere so as to obtain atmospheric waveguide potential energy through inversion.

In the above technical solution, preferably, the specific process of performing data processing on the original observation information by using the information processing module of the host module, and calculating a delay amount of a signal passing through an ionosphere and a troposphere so as to obtain atmospheric waveguide potential energy by inversion includes:

offsetting the delay of the signal in the original observation information through the ionized layer; extracting the delay amount of the signal passing through the troposphere; extracting the air pressure, temperature and water vapor information contained in the signal; and inverting to obtain an atmospheric correction refractive index profile diagram in the troposphere, and further inverting to obtain different types of atmospheric waveguides.

In the above technical solution, preferably, the specific process of the satellite signal high-precision receiver module performing signal processing to obtain the original observation information of the satellite signal includes: demodulating and despreading the satellite signal, and performing navigation calculation to obtain the position of the satellite signal; and calculating power, pseudo range and carrier phase observation values according to the satellite signals to serve as original observation information.

Compared with the prior art, the invention has the beneficial effects that: by receiving navigation satellite signals from different directions, scattering, reflection and direct signals can be received and analyzed in a large-scale space dimension, and various types of atmospheric waveguide potential energy and characteristic quantities thereof are inverted so as to evaluate a marine atmospheric refraction environment body in the large-scale space dimension and the efficiency of the marine atmospheric refraction environment body on electromagnetic wave propagation; the equipment is not influenced by geographical factors, can be shore-based, shipborne and portable, does not need a signal source, and can carry out passive evaluation on the marine atmospheric refraction environment.

Drawings

FIG. 1 is a schematic structural diagram of a satellite system-based marine atmospheric waveguide potential energy assessment device according to an embodiment of the present invention;

fig. 2 is a schematic flow chart of a method for evaluating the potential energy of an ocean atmospheric waveguide based on a satellite system according to an embodiment of the invention.

In the drawings, the correspondence between each component and the reference numeral is:

11. the system comprises a satellite signal receiving antenna module, 12 a satellite signal high-precision receiver module, 13 a data acquisition and storage module, 14 a host module and 15 a power supply module.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The invention is described in further detail below with reference to the attached drawing figures:

as shown in fig. 1 and 2, the device for evaluating the potential energy of the marine atmospheric waveguide based on the satellite system provided by the invention comprises: the system comprises a satellite signal receiving antenna module 11, a satellite signal high-precision receiver module 12, a data acquisition and storage module 13, a host computer module 14 and a power supply module 15;

the satellite signal receiving antenna module 11 comprises a left-handed circularly polarized antenna and a right-handed circularly polarized antenna, wherein the left-handed circularly polarized antenna is used for receiving satellite signals scattered by the sea surface, and the right-handed circularly polarized antenna is used for receiving high-angle direct or reflected satellite signals;

the satellite signal high-precision receiver module 12 is connected to the satellite signal receiving antenna module 11, and is configured to receive a satellite signal sent by the satellite signal receiving antenna module 11, and perform signal processing on the satellite signal to obtain original observation information of the satellite signal;

the data acquisition and storage module 13 receives and stores the original observation information in the satellite signal high-precision receiver module 12, and transfers the original observation information to the host module 14;

the host module 14 comprises a data processing module, and the data processing module calculates the delay amount of the signal passing through the ionosphere and the troposphere according to the original observation information, so as to obtain the atmospheric waveguide potential energy through inversion;

the power module 15 supplies power to the data acquisition and storage module 13 and the host module 14.

In the embodiment, by receiving navigation satellite signals from different directions, such as Beidou navigation satellite signals, the receiving and analysis of scattering, reflecting and direct-emitting signals can be realized in a large-range space dimension, and the potential energy and the characteristic quantity of each type of atmospheric waveguide are inverted so as to evaluate the marine atmospheric refraction environment in the large-range space dimension and the efficiency of the marine atmospheric refraction environment on electromagnetic wave propagation; the equipment is not influenced by geographical factors, can be shore-based, shipborne and portable, does not need a signal source, and can carry out passive evaluation on the marine atmospheric refraction environment.

Specifically, the left-hand circularly polarized antenna and the right-hand circularly polarized antenna are respectively used for receiving a satellite direct signal, a satellite reflected signal and a scattering signal passing through the sea surface, not only sea surface scattering occultation signals with low elevation angles are collected and analyzed, but also penetrating non-occultation signals with high elevation angles are considered to be collected and analyzed, so that the types and characteristic quantities of all atmospheric waveguides at different heights and levels can be inverted, the marine atmospheric refraction environment body on the large-range spatial dimension can be evaluated, the influence of the signal incidence angle is avoided, and the marine environment can be monitored and evaluated in real time.

In addition, the combination of all modules of the device can completely realize the potential energy evaluation of the ocean atmospheric waveguide, is not influenced by geographical factors, and can be shore-based, shipborne and portable.

In the above embodiment, preferably, the satellite signal high-precision receiver module 12 includes an interface board card and a core positioning board card; the interface board card is connected with the satellite signal receiving antenna module 11, receives the satellite signal sent by the satellite signal receiving antenna module 11 and transmits the satellite signal to the core positioning board card; the core positioning board card is a core part, demodulates, despreads and performs navigation calculation on the satellite signals to obtain the position of the core positioning board card, and simultaneously obtains power, pseudo range and carrier phase observed values of the satellite signals as original observation information.

Specifically, the hardware design is mainly divided into 3 aspects, namely, a radio frequency front end, an FPGA (Field Programmable Gate Array), and a DSP (Digital Signal Processor). The direct satellite signal and the scattered signal received by the antenna are respectively converted into intermediate frequency signals through radio frequency front-end processing and then sent into the FPGA. The FPGA captures and tracks a signal baseband, observed quantity information output by the baseband is sent to the DSP through the EMIF bus, the DSP performs PVT calculation, a calculation result and satellite related information are output through a serial port, and the EMIF bus controls the FPGA to capture and track GNSS scattered signals, measure delayed power and the like.

In the above embodiment, preferably, the data acquisition and storage module 13 includes a data collector and a data memory, and the data collector receives the raw observation information output by the satellite signal high-precision receiver module 12, sends the raw observation information to the data memory for storage, and loads the raw observation information to the host module 14 for data processing.

In the above embodiment, preferably, the host module 14 further includes a ruggedized industrial personal computer and a touch screen type terminal display, the data processing module is loaded in the ruggedized industrial personal computer, the data processing module is connected to the data acquisition and storage module 13 through an interface of the ruggedized industrial personal computer, for highlighting the advantage of portability, the data processing module is connected to the touch screen type terminal display, and the touch screen type terminal display performs visual display on data analyzed and processed by the data processing module and receives an external touch instruction at the same time.

In the above embodiment, the power module 15 preferably includes an ac regulated power supply that supplies 220V ac power to the host module 14 and an ac dc power supply that supplies 12V dc power to the data acquisition and storage module 13.

In the above embodiment, preferably, the data processing module estimates the magnitude of zenith troposphere delay based on certain assumptions and by using a certain mathematical model, specifically, cancels the delay of the signal passing through the ionosphere in the original observation information, extracts the delay of the signal passing through the troposphere, extracts the air pressure, temperature and water vapor information contained in the signal, performs inversion to obtain an atmospheric corrected refractive index profile in the troposphere, and performs inversion to obtain different types of atmospheric waveguide potential energy.

Specifically, the data processing module comprises high-precision GNSS data processing software, the software is loaded in a ruggedized industrial personal computer and can achieve the advantages of real-time acquisition and processing, the software functions comprise data file reading, Beidou non-differential data preprocessing, differential value calculation of an IGS (International GNSS Service) precision satellite ephemeris and clock error data, model correction and calculation of various errors, dual-frequency pseudo-range precision single-point positioning, dual-frequency phase precision single-point positioning, and finally output of coordinates, clock errors and variance-covariance information of the receiver.

In the above embodiment, preferably, low-noise amplification modules are built in the left-hand circularly polarized antenna and the right-hand circularly polarized antenna, and the low-noise amplification modules filter interference signals by using a pre-filter and a multi-stage filter, so as to ensure normal operation in a severe electromagnetic environment; and the volume is small and the weight is light.

As shown in fig. 2, the present invention further provides a method for estimating the potential energy of a marine atmospheric waveguide based on a satellite system, which is applied to the device for estimating the potential energy of a marine atmospheric waveguide based on a satellite system as provided in any one of the above embodiments, and includes:

receiving satellite signals scattered by the sea surface through a left-handed circularly polarized antenna of a satellite signal receiving antenna, and receiving high-angle direct or reflected satellite signals through a right-handed circularly polarized antenna;

sending satellite signals received by the left-hand circularly polarized antenna and the right-hand circularly polarized antenna to the satellite signal high-precision receiver module 12 for signal processing to obtain original observation information of the satellite signals;

receiving and storing original observation information through the data acquisition and storage module 13, and transferring the original observation information to the host module 14;

the data processing is performed on the original observation information through the information processing module of the host module 14, and the delay amount of the signal passing through the ionosphere and the troposphere is calculated, so that the atmospheric waveguide potential energy is obtained through inversion.

In the above embodiment, preferably, the specific process of performing data processing on the original observation information by the information processing module of the host module 14, and calculating the delay amount of the signal passing through the ionosphere and the troposphere so as to obtain the atmospheric waveguide potential energy by inversion includes:

offsetting the delay of the signal passing through the ionized layer in the original observation information; extracting the delay amount of the signal passing through the troposphere; extracting the air pressure, temperature and water vapor information contained in the signal; and inverting to obtain an atmospheric correction refractive index profile diagram in the troposphere, and further inverting to obtain different types of atmospheric waveguide potential energy.

In the above embodiment, preferably, the specific process of the satellite signal high-precision receiver module 12 performing signal processing to obtain the raw observation information of the satellite signal includes: demodulating and despreading the satellite signals, and performing navigation calculation to obtain the position of the satellite signals; and calculating power, pseudo range and carrier phase observed values according to the satellite signals to serve as original observation information.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.