A simulation model for satellite communication links in different orbits

Abstract

The present invention belongs to the technical field of simulation models, and specifically discloses a simulation model for satellite communication links in different orbits, including satellites in different orbits, interstellar link communications, relay satellites, satellite-to-ground link communications, and a measurement and control station; the interstellar link communications are initiated according to the needs of satellites in different orbits, and the interstellar link communications are mainly used to establish communication links between satellites in different orbits and relay satellites; the relay satellite is used to act as an intermediate satellite for transmitting data when a satellite-to-ground communication link cannot be established between a satellite in different orbit and a ground station; the satellite-to-ground link communications are established according to relay satellites or satellites in different orbits, and are used to obtain telemetry data transmitted back by the satellite to a ground measurement and control station and parse and analyze the telemetry data; the measurement and control station is used to measure and control satellites in different orbits; the present invention can meet the requirements of receiving telemetry data transmitted back by satellites in real time around the clock, analyzing and parsing the data, and other work requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of simulation models, and in particular to a simulation model for satellite communication links in different orbits. Background Art

[0002] The existing satellite communication link simulation model mainly includes two areas: interstellar link and satellite-to-ground link. That is, low-orbit satellites need to transmit telemetry data to high-orbit satellites through interstellar links, and telemetry data is also transmitted from high-orbit satellites to low-orbit satellites through interstellar links. There are also situations where high-orbit satellites and low-orbit satellites cannot establish interstellar links for several days. It is necessary to transmit telemetry data through a relay satellite, and then transmit the data back to the ground through the satellite-to-ground link for data parsing and data analysis. Through such a complex communication link establishment, coupled with some communication shortcomings in interstellar links and satellite-to-ground links, such as: long propagation paths, crossing the ionosphere, crossing the troposphere and other characteristics, it shows the shortcomings of extended link time, high signal distortion, asymmetric bandwidth, low link reliability, etc., which is not easy to meet the real-time communication needs of all satellites. Summary of the invention

[0003] The purpose of the present invention is to provide a simulation model for satellite communication links in different orbits to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a simulation model of communication links for satellites in different orbits, including satellites in different orbits, interstellar communication links, relay satellites, satellite-to-ground communication links and tracking and control stations; the interstellar communication links are initiated according to the needs of satellites in different orbits, and the interstellar communication links are mainly used to establish communication links between satellites in different orbits and relay satellites; the relay satellite is used to act as an intermediate satellite for transmitting data when the satellite-to-ground communication link cannot be established between the satellite in different orbit and the ground tracking and control station; the satellite-to-ground communication link is established according to the relay satellite or the satellite in different orbit, and is used to obtain the telemetry data transmitted back by the satellite to the ground tracking and control station and parse and analyze the telemetry data; the tracking and control station is used to track and control satellites in different orbits.

[0005] As a preferred technical solution of the present invention, the different orbit satellites include high-orbit satellites, medium-orbit satellites, low-orbit satellites, geosynchronous orbit satellites and sun-synchronous orbit satellites.

[0006] As a preferred technical solution of the present invention, the interstellar communication link refers to a cross link between satellites, which can replace the work of the ground "double-hop" microwave relay station; the interstellar communication link avoids the transmission of information back to the ground for processing and routing selection, reduces secondary service allocation, and reduces communication delay compared to the use of ground links; the interstellar communication link is a wireless link, and microwave, millimeter wave or laser link can be used; when using a microwave link, since the frequency of the carrier itself is relatively low, the required antenna size is larger, the transmission power is also relatively large, and the bandwidth of the entire interstellar link is narrow, which can only adapt to situations where the data transmission volume is not large; using millimeter wave or laser links, small antennas, low output power and small transmitters can be used to reduce the size and mass of the satellite, reduce power consumption, increase communication bandwidth, and reduce communication interference.

[0007] As a preferred technical solution of the present invention, the satellite-to-ground communication link refers to a physical channel for direct radio transmission between nodes of satellites in different orbits and nodes of the tracking and control station in the communication network. Due to the space environment constraints between space and the ground, GEO satellite satellite-to-ground links have the characteristics of long propagation paths, crossing the ionosphere, crossing the troposphere, etc. compared with interstellar links and surface links, showing undesirable characteristics such as link delay extension, high signal distortion, bandwidth asymmetry, and low link reliability. The physical environment of radio waves from space to the ground is complicated, and it is very inconvenient to carry out precise experimental research and it is difficult to accurately control the experimental environment, making it difficult to use experimental methods to study the physical characteristics of satellite communication links. However, the simulation analysis method based on the experimental basis to obtain the mathematical model is low-cost, highly reliable, and convenient for various institutions to carry out research, so simulation analysis has become the preferred way to study satellite communications.

[0008] As a preferred technical solution of the present invention, the measurement and control station is provided with a local monitoring computer for monitoring the monitoring equipment in the measurement and control station, the measurement and control station is provided with a remote measurement and control system, the remote measurement and control system includes a remote control station for remotely controlling the measurement and control station, the remote control station is provided with a remote control computer group, and the remote control computer group communicates with the local monitoring computer and the measurement and control equipment in the measurement and control station respectively through a network.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] In order to solve the problems of non-uniformity of satellite communication links, complicated establishment of communication links, high signal distortion, asymmetric bandwidth and low link reliability, the present invention proposes a simulation model for satellite communication links in different orbits, a simulation model for receiving telemetry data from a series of satellite communication links such as high-orbit satellites, medium-orbit satellites, ground-orbit satellites, geosynchronous orbit satellites and sun-synchronous orbit satellites, and a ground measurement and control station. The model coordinates the communication transmission and reception and analysis of the overall telemetry data, eliminates the need for coordinated telemetry data transmission through interstellar links and satellite-to-ground links, or telemetry data transmission through relay satellites in interstellar links, and can meet the requirements of receiving telemetry data sent back by satellites in real time around the clock and analyzing and parsing the data. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0013] See also Figure 1 The present invention provides a technical solution: a simulation model of communication links for satellites in different orbits, including satellites in different orbits, interstellar communication links, relay satellites, satellite-to-ground communication links and tracking and control stations; the interstellar communication links are initiated according to the needs of satellites in different orbits, and the interstellar communication links are mainly used to establish communication links between satellites in different orbits and relay satellites; the relay satellite is used to act as an intermediate satellite for transmitting data when the satellite-to-ground communication link cannot be established between the satellites in different orbits and the ground tracking and control station; the satellite-to-ground communication link is established according to the relay satellite or the satellites in different orbits, and is used to obtain the telemetry data transmitted back by the satellite to the ground tracking and control station and parse and analyze the telemetry data; the tracking and control station is used to track and control satellites in different orbits.

[0014] Furthermore, the different orbit satellites include high-orbit satellites, medium-orbit satellites, low-orbit satellites, geosynchronous orbit satellites and sun-synchronous orbit satellites.

[0015] Furthermore, the interstellar communication link refers to a cross-link between satellites, which can replace the work of the ground "double-hop" microwave relay station; the interstellar communication link avoids the transmission of information back to the ground for processing and routing selection, reduces secondary business allocation, and reduces communication delay compared to the use of ground links; the interstellar communication link is a wireless link and can use microwave, millimeter wave or laser links; when using microwave links, since the frequency of the carrier itself is relatively low, the required antenna size is larger, the transmission power is also relatively large, and the bandwidth of the entire interstellar link is narrow, which can only adapt to situations where the data transmission volume is not large; using millimeter wave or laser links, small antennas, low output power and small transmitters can be used to reduce the size and mass of the satellite, reduce power consumption, increase communication bandwidth, and reduce communication interference.

[0016] Furthermore, the satellite-to-ground communication link refers to a physical channel for direct radio transmission between nodes of satellites in different orbits and nodes of tracking and control stations in the communication network. Due to the space environment constraints between space and the ground, GEO satellite satellite-to-ground links have the characteristics of long propagation paths, crossing the ionosphere, crossing the troposphere, etc. compared with interstellar links and surface links, showing undesirable characteristics such as extended link time, high signal distortion, asymmetric bandwidth, and low link reliability. The physical environment of radio waves from space to the ground is complicated, and it is very inconvenient to carry out precise experimental research and it is difficult to accurately control the experimental environment, making it difficult to use experimental methods to study the physical characteristics of satellite communication links. However, the simulation analysis method based on the experimental basis to obtain the mathematical model is low-cost, highly reliable, and convenient for various institutions to carry out research, so simulation analysis has become the preferred way to study satellite communications.

[0017] Furthermore, the measurement and control station is provided with a local monitoring computer for monitoring the monitoring equipment in the measurement and control station, the measurement and control station is provided with a remote measurement and control system, the remote measurement and control system includes a remote control station for remotely controlling the measurement and control station, the remote control station is provided with a remote control computer group, and the remote control computer group communicates with the local monitoring computer and the measurement and control equipment in the measurement and control station respectively through the network; flexible and convenient measurement and control operations can be realized for satellites in different orbits, the measurement and control locations are not restricted, and work efficiency can be greatly improved.

[0018] In summary, the present invention establishes a satellite-to-ground communication link with a ground tracking and control station after satellites in different orbits establish a communication link with a relay satellite, thereby solving the problem that users can receive telemetry data from satellites in different orbits in real time.

[0019] The present invention can comprehensively complete the establishment of communication links between satellites in different orbits, establish communication links between different orbit satellites (high-orbit satellites, medium-orbit satellites, low-orbit satellites, geosynchronous orbit satellites, and sun-synchronous orbit satellites) and relay satellites, and establish satellite-to-ground communication links between relay satellites and ground measurement and control stations; for telemetry data of satellites in different orbits performing different tasks, communication links can be established with ground measurement and control stations in real time, and the entire process of transmitting back telemetry data for data analysis and parsing can be executed.

[0020] In order to solve the problems of non-uniformity of satellite communication links, complicated establishment of communication links, high signal distortion, asymmetric bandwidth and low link reliability, the present invention proposes a simulation model for satellite communication links in different orbits, a simulation model for receiving telemetry data from a series of satellite communication links such as high-orbit satellites, medium-orbit satellites, ground-orbit satellites, geosynchronous orbit satellites and sun-synchronous orbit satellites, and a ground measurement and control station. The model coordinates the communication transmission and reception and analysis of the overall telemetry data, eliminates the need for coordinated telemetry data transmission through interstellar links and satellite-to-ground links, or telemetry data transmission through relay satellites in interstellar links, and can meet the requirements of receiving telemetry data sent back by satellites in real time around the clock and analyzing and parsing the data.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A simulation method for satellite communication links in different orbits, characterized in that: It includes satellites in different orbits, interstellar communication links, relay satellites, satellite-to-ground communication links and tracking and control stations; the interstellar communication links are initiated according to the needs of satellites in different orbits, and the interstellar communication links are communication links established between satellites in different orbits and relay satellites; the relay satellite is used to act as an intermediate satellite for transmitting data when the satellite-to-ground communication link cannot be established between the satellites in different orbits and the tracking and control station on the ground; the satellite-to-ground communication link is established according to the relay satellite or satellites in different orbits, and is used to obtain telemetry data transmitted back from satellites in different orbits to the tracking and control station on the ground and to parse and analyze the telemetry data; the tracking and control station is used to track and control satellites in different orbits.

2. The method for simulating satellite communication links in different orbits according to claim 1, characterized in that: The different orbit satellites include high-orbit satellites, medium-orbit satellites, low-orbit satellites, geosynchronous orbit satellites and sun-synchronous orbit satellites.

3. The method for simulating satellite communication links in different orbits according to claim 1, characterized in that: The satellite-to-ground communication link refers to a physical channel for direct radio transmission between nodes of satellites in different orbits and nodes of tracking and control stations in a communication network.

4. The method for simulating satellite communication links in different orbits according to claim 1, characterized in that: The measurement and control station is provided with a local monitoring computer for monitoring the monitoring equipment in the measurement and control station, and the measurement and control station is provided with a remote measurement and control system, the remote measurement and control system includes a remote control station for remotely controlling the measurement and control station, and the remote control station is provided with a remote control computer group, and the remote control computer group communicates with the local monitoring computer and the measurement and control equipment in the measurement and control station respectively through a network.

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