Satellite finding control and state monitoring integrated system of low-orbit satellite

Abstract

The invention provides a satellite finding control and state monitoring integrated system for a low-orbit satellite, and belongs to the technical field of satellite finding. The system comprises a satellite finding control module and a state monitoring module. Wherein the satellite finding control module is used for generating a monitoring point pointing forecast file based on ephemeris data and position information of a monitoring point, generating a queuing monitoring task according to a sequence of starting and ending time of satellite monitoring and satellite entry time, and issuing the monitoring point pointing forecast file to the antenna system according to local time of the monitoring point; enabling the antenna system to automatically track and monitor the to-be-monitored satellite until the task is executed; and the state monitoring module is used for monitoring a satellite space state, an antenna star finding state and a key parameter curve based on the tracking monitoring information of the satellite, performing real-time spectrum analysis on a satellite signal, and displaying antenna state data in real time. According to the invention, the satellite finding control module and the state monitoring module are integrated, so that accurate tracking and real-time monitoring of low-orbit satellites are realized.

Description

Technical Field

[0001] The present invention relates to the field of satellite search technology, and in particular to a low-orbit satellite search control and status monitoring integrated system. Background Art

[0002] With the rapid development of satellite communication technology, low-orbit satellites have attracted widespread attention due to their low latency and global coverage capabilities. Low-orbit satellite systems require precise satellite search control and status monitoring to ensure the stability and reliability of communication links.

[0003] Traditional satellite search control systems and status monitoring systems are usually designed separately. During satellite search, satellite tracking and communication, multiple people and multiple terminals are usually required to cooperate with each other, which leads to problems such as increased system complexity, long response time, low resource utilization and difficulty for non-professionals to get started. Therefore, it is necessary to develop an integrated software system that integrates satellite search control and status monitoring functions. Summary of the invention

[0004] In view of this, an embodiment of the present invention provides an integrated system for low-orbit satellite search control and status monitoring, so as to solve the problems of complex design of existing low-orbit satellite systems and low efficiency of system monitoring response.

[0005] The technical solution adopted by the present invention is: The present invention provides a low-orbit satellite search control and status monitoring integrated system, including a search control module and a status monitoring module; wherein: The satellite search control module is used to generate a monitoring point pointing forecast file based on the ephemeris data and the location information of the monitoring point, and to generate a queue monitoring task according to the start and end time of satellite monitoring and the satellite entry time. At the same time, the monitoring point pointing forecast file is sent to the antenna system according to the local time of the monitoring point, so that the antenna system automatically tracks and monitors the satellite to be monitored until the queue monitoring task is completed; The status monitoring module is used to monitor the satellite space status, antenna satellite search status and key parameter curves based on satellite tracking and monitoring information, perform real-time spectrum analysis on satellite signals, and display antenna status data in real time.

[0006] Furthermore, the satellite search control module includes: The satellite monitoring and prediction unit is used to predict the position and speed of the satellite based on the latest ephemeris data using the SGP4 algorithm, and generate a monitoring point pointing file in combination with the current monitoring point location coordinates and altitude; the monitoring point pointing prediction file includes the satellite transit start and end time, and the azimuth, pitch angle and altitude information at fixed time intervals within the satellite transit time; A monitoring task generating unit is used to generate a list of satellites to be monitored according to the start and end time of satellite monitoring set by the user and the order of satellite entry time, and generate a queue monitoring task; The task issuing unit is used to select the latest satellite to be monitored from the list of satellites to be monitored according to the local time of the monitoring point, and send the monitoring point pointing forecast file corresponding to the latest satellite to be monitored to the antenna system, so that the antenna system can automatically track and monitor the satellite to be monitored after the satellite to be monitored enters and successfully captures the beacon signal until the queued monitoring task is completed.

[0007] Furthermore, after receiving the monitoring point pointing forecast file, the antenna system adjusts the pointing direction of the antenna according to the monitoring point pointing forecast file. If the satellite to be monitored has entered and successfully captured the beacon signal, the satellite's beacon is locked and the automatic tracking state is entered, and the satellite to be monitored is automatically tracked and monitored until the monitoring task is completed. If the signal is lost during the monitoring process, the antenna system waits for the beacon signal to appear again, and then automatically tracks and monitors the satellite to be monitored again.

[0008] Furthermore, the status monitoring module includes: The satellite space status monitoring unit is used to display the relative position and dynamic trajectory of the satellite and the ground station through a 3D interface based on the tracking and monitoring information of the satellite to be monitored, and to display the geographical location between the satellite and the ground monitoring point, as well as the path of the satellite's transit through a 2D interface; The antenna satellite search state tracking unit is used to dynamically simulate the antenna satellite search workflow through OpenGL drawing and generate corresponding tracking animations and antenna satellite search dynamic graphs; A parameter curve display unit is used to display the key parameter curve of the satellite in real time, and save the key parameters of the satellite as chart data, and store them persistently in a local database; the key parameters include the distance between the satellite and the ground station, downlink loss, satellite coverage area, satellite coverage radius, Doppler frequency shift, two-way air interface delay, carrier roll, carrier pitch and carrier yaw; The spectrum analysis unit is used to access the hardware spectrum acquisition device, select the spectrum analysis mode according to the application scenario to perform spectrum analysis on the satellite signal, and display the real-time spectrum analysis interface; the spectrum analysis mode includes the standard spectrum analysis mode, the real-time spectrum analysis mode, and the detection analysis mode; The antenna status monitoring unit is used to display the status and equipment data of the antenna and monitoring equipment at the ground monitoring point in real time through a table interface.

[0009] Furthermore, the system also includes a system parameter configuration module, which is used to set the training working mode of the satellite search control module, and configure antenna system parameters and satellite monitoring mission parameters.

[0010] Furthermore, the system also includes a fault alarm module, which is used to monitor the satellite status and antenna status in real time according to a preset monitoring threshold to see if there is any abnormality or equipment failure, and to issue an abnormality alarm or a fault alarm when an abnormality or equipment failure occurs.

[0011] In summary, the beneficial effects of the present invention are as follows: The present invention provides an integrated system for low-orbit satellite search control and status monitoring. The system integrates satellite signal detection, trajectory calculation and equipment status monitoring functions into a unified software platform by integrating a search control module and a status monitoring module, thereby reducing the complexity of system interfaces and operations, enhancing system response speed and improving system stability. At the same time, the search control module is used to automatically track and monitor the satellite to be monitored, and the status of the satellite is monitored and displayed in real time through the status monitoring module, thereby achieving accurate tracking and real-time monitoring of low-orbit satellites. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the following is a brief introduction to the drawings required for use in the embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work, and these are all within the protection scope of the present invention.

[0013] Figure 1 This is a functional module diagram of a low-orbit satellite search control and status monitoring integrated system of the present invention; Figure 2 This is a working diagram of the satellite search control module of the present invention; Figure 3 This is a schematic diagram of the satellite space status monitoring interface; Figure 4 Workflow diagram for antenna satellite search; Figure 5 is a schematic diagram of the first key parameter curve; Figure 6 is a schematic diagram of the second key parameter curve; Figure 7 is a schematic diagram of the third key parameter curve; Figure 8 This is a schematic diagram of the satellite signal spectrum analysis interface; DETAILED DESCRIPTION In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. If there is no conflict, the various features of the present invention and the embodiments can be combined with each other, all within the scope of protection of the present invention.

[0014] Example 1: Reference Figure 1 As shown, Figure 1 This is a functional module diagram of a low-orbit satellite search control and status monitoring integrated system of the present invention. Figure 1 As shown, a low-orbit satellite search control and status monitoring integrated system of the present invention includes a search control module and a status monitoring module. The satellite search control module is used to generate a monitoring point pointing forecast file based on the ephemeris data and the location information of the monitoring point, and to generate a queue monitoring task according to the start and end time of satellite monitoring and the satellite entry time. At the same time, the monitoring point pointing forecast file is sent to the antenna system according to the local time of the monitoring point, so that the antenna system automatically tracks and monitors the satellite to be monitored until the queue monitoring task is completed; The status monitoring module is used to monitor the satellite space status, antenna satellite search status and key parameter curves based on satellite tracking and monitoring information, perform real-time spectrum analysis on satellite signals, and display antenna status data in real time.

[0015] The embodiment of the present invention adopts a modular design method, integrating the satellite search control software module and the status monitoring software module in one software framework, thereby realizing accurate tracking and real-time monitoring of low-orbit satellites. By integrating the satellite search control and status monitoring functions in one software system framework, it is easy to maintain and upgrade, and provides an intuitive user interface so that operators can easily monitor the system status and perform necessary operations. At the same time, the system data interface adopts a standard data interface to facilitate data exchange with other systems.

[0016] Further, refer to Figure 1 As shown, the satellite search control module includes: The satellite monitoring and prediction unit is used to predict the position and speed of the satellite based on the latest ephemeris data using the SGP4 algorithm, and generate a monitoring point pointing file in combination with the current monitoring point location coordinates and altitude. The monitoring point pointing prediction file includes the satellite transit start and end time, and the azimuth, pitch angle and altitude information at fixed time intervals during the satellite transit time. Among them, the SGP4 algorithm is used to calculate the precise position and speed of the satellite based on TLE data (ephemeris data).

[0017] The monitoring task generating unit is used to generate a list of satellites to be monitored according to the start and end time of satellite monitoring set by the user and the order of satellite entry time, and generate a queue monitoring task.

[0018] The task issuing unit is used to select the latest satellite to be monitored from the list of satellites to be monitored according to the local time of the monitoring point, and send the monitoring point pointing forecast file corresponding to the latest satellite to be monitored to the antenna system, so that the antenna system can automatically track and monitor the satellite to be monitored after the satellite to be monitored enters and successfully captures the beacon signal until the queued monitoring task is completed.

[0019] Specifically, after receiving the monitoring point pointing forecast file, the antenna system of the embodiment of the present invention adjusts the pointing direction of the antenna according to the monitoring point pointing forecast file. If the satellite to be monitored has entered and successfully captured the beacon signal, the satellite's beacon is locked and the automatic tracking state is entered, and the satellite to be monitored is automatically tracked and monitored until the monitoring task is completed. If the signal is lost during the monitoring process, the antenna system waits for the beacon signal to appear again, and then automatically tracks and monitors the satellite to be monitored again.

[0020] Among them, the current methods of tracking satellites through antennas are divided into three methods: 1. Manual tracking: Manually adjust the direction of the antenna on time to make the satellite signal received strongest. Manual tracking is the simplest and is suitable for antennas below 10M (except for ship-mounted and aircraft-mounted).

[0021] 2. Program tracking: The satellite orbit prediction data and the antenna position angle value from the antenna angle detector are input into the computer. The computer processes, calculates and compares these data to obtain the angle difference between the satellite orbit and the actual antenna angle within the standard time. This value is then sent to the servo circuit to drive the antenna and eliminate the error angle.

[0022] 3. Automatic tracking (beacon tracking): Based on the beacon signal sent by the satellite received by the earth station, the error signal is detected, the tracking system is driven, and the antenna is automatically aligned with the satellite.

[0023] The satellite search control module of the embodiment of the present invention mainly adopts the beacon tracking method to automatically track the low-orbit satellite to improve the satellite monitoring and tracking efficiency.

[0024] Specifically, the satellite search control module of the embodiment of the present invention is mainly used to achieve initial satellite search, capture correction and stable tracking of low-orbit satellites. The module has the following characteristics: 1) Support two working modes: program tracking (open loop) and beacon tracking (closed loop); 2) Supports pause tracking / continue tracking, stop tracking, and satellite switching tracking mode; 3) In open loop, you can set the antenna pointing (azimuth, pitch, etc.) bias parameters and time bias parameters, and choose whether to enable them; 4) Supports target satellite screening function, can set entry time period, TLE (single, multiple), etc. to formulate mission plans, and realize continuous forecasting, tracking and locking functions of multiple low-orbit satellites; 5) TLE ephemeris can be updated online, and the satellite position can be accurately predicted based on the orbit file. Two TLE ephemeris data delivery formats are supported: elevation angle, azimuth angle, and polynomial coefficients.

[0025] In some embodiments, reference Figure 2 As shown, the working process of the satellite search control module of the embodiment of the present invention is specifically as follows: after the system starts working, the latest ephemeris data is first downloaded through the link provided by the satellite operator and imported into the current system.

[0026] The satellite search control module uses the SGP4 algorithm to predict the satellite position and speed based on the latest ephemeris data, and generates a monitoring point pointing prediction file based on the current monitoring point location coordinates and altitude (which can be determined by GPS, Beidou, or manual input). The file should contain: 1) the start and end time of the satellite transit; 2) the azimuth, pitch angle and altitude information at fixed time intervals during the satellite transit time.

[0027] Then the satellite search control module generates a list of satellites to be monitored according to the start and end time of satellite monitoring set by the user, and generates a queue monitoring task in the order of satellite entry time. After the monitoring task is generated, the satellite search control module selects the latest satellite information to be monitored according to the local time and sends it to the antenna system. The antenna adjusts its direction according to the information and waits for the satellite to appear.

[0028] If the satellite to be monitored has entered and successfully captured the beacon signal, the antenna system will lock the beacon and enter automatic tracking state until the mission is completed. If the signal is lost during the monitoring process, the antenna will wait for the beacon signal to appear again.

[0029] Further, refer to Figure 1 As shown, the state monitoring module of the embodiment of the present invention includes: The satellite space status monitoring unit is used to display the relative position and dynamic trajectory of the satellite and the ground station through a 3D interface based on the tracking and monitoring information of the satellite to be monitored, and to display the geographical location between the satellite and the ground monitoring point, as well as the satellite's transit path through a 2D interface.

[0030] The antenna satellite search state tracking unit is used to dynamically simulate the antenna satellite search workflow through OpenGL drawing method, and generate corresponding tracking animation and antenna satellite search dynamic graph.

[0031] The parameter curve display unit is used to display the key parameter curve of the satellite in real time, and save the key parameters of the satellite as chart data, and store them persistently in the local database; the key parameters include the distance between the satellite and the ground station, downlink loss, satellite coverage area, satellite coverage radius, Doppler frequency shift, two-way air interface delay, carrier roll, carrier pitch and carrier yaw.

[0032] The spectrum analysis unit is used to access the hardware spectrum acquisition device, select the spectrum analysis mode according to the application scenario to perform spectrum analysis on the satellite signal, and display the real-time spectrum analysis interface; the spectrum analysis mode includes standard spectrum analysis mode, real-time spectrum analysis mode, and detection analysis mode.

[0033] The antenna status monitoring unit is used to display the status and equipment data of the antenna and monitoring equipment at the ground monitoring point in real time through a table interface.

[0034] Specifically, in some embodiments, the status monitoring module of the embodiment of the present invention is mainly used to realize monitoring functions such as satellite space status monitoring, antenna satellite status tracking, key parameter curves and real-time spectrum analysis, and various antenna status data display.

[0035] Among them, the satellite space status monitoring unit will present two kinds of view information, 3D and 2D. The 3D interface intuitively displays the relative position and dynamic trajectory of the satellite and the ground station from a three-dimensional perspective, and reveals in detail the satellite's orbital parameters, characteristics, and the specific position, azimuth, pitch angle, distance and other core data of the ground station. The 2D interface provides a two-dimensional geographic view, which clearly depicts the geographical location and travel path of the satellite and the ground station. In this view, the satellite's transit trajectory is vividly presented in a graphical way, including the precise entry and exit times and the geographical location and time information of the highest point, which can provide a comprehensive and intuitive display of visibility calculation results. The final satellite space status monitoring interface is as follows: Figure 3 shown.

[0036] The antenna satellite tracking unit uses animation to display the status tracking. The unit uses OpenGL drawing to dynamically simulate the antenna satellite tracking process and implements the following functions: a) receiving antenna data, parsing and storing it in a file; b) using OpenGL to draw the antenna satellite tracking dynamic diagram. Figure 4 As shown, after the system is initialized, it waits for the satellite to enter, captures the satellite beacon signal when the satellite enters, and continuously tracks the satellite according to the beacon signal until the satellite leaves.

[0037] The parameter curve display unit can display data such as the distance between the satellite and the ground station, downlink loss, satellite coverage area, satellite coverage radius, Doppler frequency shift, two-way air interface delay, carrier roll, carrier pitch, carrier yaw, etc. At the same time, the module can realize the function of saving charts, and can persist all chart data and store them in the local database to ensure long-term retention and playback of data. It can also realize the function of importing charts, and can selectively load and reproduce saved chart data according to specific timestamps, which facilitates the analysis of historical trends. The key parameter curve interface of the embodiment of the present invention is as follows: Figure 5 to Figure 7 shown.

[0038] The spectrum analysis unit implements the real-time spectrum analysis function by connecting to the hardware spectrum acquisition device and calling the device SDK. The spectrum analysis unit can provide multiple modes according to the actual application scenario, including standard spectrum analysis (SWP) mode, real-time spectrum analysis (RTA) mode, detection analysis (DET) mode, etc. The spectrum analysis interface of the embodiment of the present invention is as follows: Figure 8 shown.

[0039] The antenna status monitoring unit is mainly used to display the status and data of the ground station antenna and its related equipment in real time, and automatically updates once a second to ensure the timeliness and accuracy of the information. It is equipped with an intuitive and easy-to-understand table interface that can clearly display basic information such as longitude, latitude, altitude, and a series of advanced parameters including the number of GPS satellites, GPS status, RTK status, IMU status, beacon status, and motor status.

[0040] In addition, the antenna status monitoring unit also has a powerful signal monitoring function, which can track and display the carrier-to-noise ratio / level information, as well as the azimuth and pitch angles of the antenna beam in real time. At the same time, it can also accurately measure and display the carrier's roll, pitch and yaw angles, providing users with a full range of attitude information.

[0041] Furthermore, in the embodiment of the present invention, the system also includes a system parameter configuration module, which is used to set the training working mode of the satellite search control module and configure antenna system parameters and satellite monitoring mission parameters.

[0042] Furthermore, in an embodiment of the present invention, the system also includes a fault alarm module, which is used to monitor the satellite status and antenna status in real time based on a preset monitoring threshold to see if there is any abnormal state or equipment failure, and to issue an abnormal alarm or fault alarm when an abnormal state or equipment failure occurs.

[0043] An integrated system for low-orbit satellite search control and status monitoring in an embodiment of the present invention integrates a search control module and a status monitoring module, uses the search control module to automatically track and monitor the satellite to be monitored, and uses the status monitoring module to monitor and display the satellite status in real time, thereby achieving accurate tracking and real-time monitoring of low-orbit satellites. The system in an embodiment of the present invention has the following technical features: (1) Intuitive trajectory and status display: The system calculates in real time and dynamically displays information such as satellite trajectory and antenna equipment operation status through an interactive interface that combines 2D, 3D, and multiple charts, facilitating quick operation and improving system operation efficiency.

[0044] (2) High system integration: Integrating satellite signal reception, trajectory calculation and equipment status monitoring functions into a unified software platform, reducing the complexity of system interfaces and operations, enhancing system response speed and improving system stability.

[0045] (3) Reduce costs: Due to the adoption of a highly integrated design concept, compared with traditional solutions, the present invention greatly reduces the demand for hardware equipment, effectively reduces construction and operation costs, and optimizes system resources. (4) Improve user experience: The simple and clear user interface design greatly facilitates daily operations, and even non-professionals can quickly get started.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A low-orbit satellite search control and status monitoring integrated system, characterized in that: It includes a satellite search control module and a status monitoring module; among which, The satellite search control module is used to generate a monitoring point pointing forecast file based on the ephemeris data and the location information of the monitoring point, and to generate a queue monitoring task according to the start and end time of satellite monitoring and the satellite entry time. At the same time, the monitoring point pointing forecast file is sent to the antenna system according to the local time of the monitoring point, so that the antenna system automatically tracks and monitors the satellite to be monitored until the queue monitoring task is completed; The status monitoring module is used to monitor the satellite space status, antenna satellite search status and key parameter curves based on satellite tracking and monitoring information, perform real-time spectrum analysis on satellite signals, and display antenna status data in real time.

2. The low-orbit satellite search control and status monitoring integrated system according to claim 1, characterized in that: The satellite search control module includes: The satellite monitoring and prediction unit is used to predict the position and speed of the satellite based on the latest ephemeris data using the SGP4 algorithm, and generate a monitoring point pointing file in combination with the current monitoring point location coordinates and altitude; the monitoring point pointing prediction file includes the satellite transit start and end time, and the azimuth, pitch angle and altitude information at fixed time intervals within the satellite transit time; A monitoring task generating unit is used to generate a list of satellites to be monitored according to the start and end time of satellite monitoring set by the user and the order of satellite entry time, and generate a queue monitoring task; The task issuing unit is used to select the latest satellite to be monitored from the list of satellites to be monitored according to the local time of the monitoring point, and send the monitoring point pointing forecast file corresponding to the latest satellite to be monitored to the antenna system, so that the antenna system can automatically track and monitor the satellite to be monitored after the satellite to be monitored enters and successfully captures the beacon signal until the queued monitoring task is completed.

3. The low-orbit satellite search control and status monitoring integrated system according to claim 2 is characterized in that: After receiving the monitoring point pointing forecast file, the antenna system adjusts the antenna pointing according to the monitoring point pointing forecast file. If the satellite to be monitored has entered and successfully captured the beacon signal, the beacon of the satellite is locked and enters the automatic tracking state, and the satellite to be monitored is automatically tracked and monitored until the monitoring task is completed. If the signal is lost during the monitoring process, the antenna system will wait for the beacon signal to appear again and then automatically track and monitor the satellite to be monitored.

4. The low-orbit satellite search control and status monitoring integrated system according to claim 1, characterized in that: The status monitoring module comprises: The satellite space status monitoring unit is used to display the relative position and dynamic trajectory of the satellite and the ground station through a 3D interface based on the tracking and monitoring information of the satellite to be monitored, and to display the geographical location between the satellite and the ground monitoring point, as well as the path of the satellite's transit through a 2D interface; The antenna satellite search state tracking unit is used to dynamically simulate the antenna satellite search workflow through OpenGL drawing and generate corresponding tracking animations and antenna satellite search dynamic graphs; A parameter curve display unit is used to display the key parameter curve of the satellite in real time, and save the key parameters of the satellite as chart data, and store them persistently in a local database; the key parameters include the distance between the satellite and the ground station, downlink loss, satellite coverage area, satellite coverage radius, Doppler frequency shift, two-way air interface delay, carrier roll, carrier pitch and carrier yaw; The spectrum analysis unit is used to access the hardware spectrum acquisition device, select the spectrum analysis mode according to the application scenario to perform spectrum analysis on the satellite signal, and display the real-time spectrum analysis interface; the spectrum analysis mode includes the standard spectrum analysis mode, the real-time spectrum analysis mode, and the detection analysis mode; The antenna status monitoring unit is used to display the status and equipment data of the antenna and monitoring equipment at the ground monitoring point in real time through a table interface.

5. The low-orbit satellite search control and status monitoring integrated system according to claim 1, characterized in that: It also includes a system parameter configuration module for setting the training working mode of the satellite search control module, and configuring antenna system parameters and satellite monitoring mission parameters.

6. The low-orbit satellite search control and status monitoring integrated system according to claim 1, characterized in that: It also includes a fault alarm module, which is used to monitor the satellite status and antenna status in real time according to a preset monitoring threshold to see if there is any abnormality or equipment failure, and to issue an abnormality alarm or a fault alarm when an abnormality or equipment failure occurs.

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