CN113037412B - Satellite data transmission link fault evaluation system - Google Patents
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- CN113037412B CN113037412B CN202110217069.XA CN202110217069A CN113037412B CN 113037412 B CN113037412 B CN 113037412B CN 202110217069 A CN202110217069 A CN 202110217069A CN 113037412 B CN113037412 B CN 113037412B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/391—Modelling the propagation channel
- H04B17/3912—Simulation models, e.g. distribution of spectral power density or received signal strength indicator [RSSI] for a given geographic region
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18519—Operations control, administration or maintenance
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a satellite data transmission link fault evaluation system, which comprises: the antenna three-dimensional model and main function index database module is configured to construct and store an antenna three-dimensional model through the existing satellite antenna and acquire and store main function indexes of the antenna three-dimensional model; the antenna link calculation function module is configured to calculate the bit error rate of the satellite-ground link of the system according to the data transmission system configuration and the main function indexes of the antenna three-dimensional model; the data evaluation function module is configured to process the data stream according to the bit error rate of the satellite-ground link of the system to obtain a fault evaluation result of the satellite data transmission link, and comprises a link effective time calculation function module configured to calculate a satellite-ground distance, a communication distance, link time and data effective transmission time.
Description
Technical Field
The invention relates to the technical field of satellite data transmission, in particular to a satellite data transmission link fault evaluation system.
Background
The satellite data transmission system is an important component for realizing the functions and performance of the satellite, and the main function of the satellite data transmission system is to multiplex and store data acquired by a load when the satellite load executes a task and then transmit the data to a ground station in real time or in a delayed manner. Aiming at different satellite data transmission systems of different satellite types, the adopted antenna structures are different, the materials are different, the damage mechanisms are different, after the antenna is damaged, the antenna gain and the standing wave index are correspondingly changed, the error rate of data downloading is influenced by the effect of damage, the transmission time of a data link is influenced, and the data transmission fault is caused.
Disclosure of Invention
The invention aims to provide a satellite data transmission link fault evaluation system to solve the problem that data transmission between a satellite data transmission system and a ground station fails after the loss of an existing antenna.
In order to solve the above technical problem, the present invention provides a satellite data transmission link fault evaluation system, including:
an antenna three-dimensional model and primary function index database module configured to build and store the antenna three-dimensional model from existing satellite antennas, an
Acquiring and storing main function indexes of the antenna three-dimensional model;
the antenna link calculation function module is configured to calculate the bit error rate of the satellite-ground link of the system according to the data transmission system configuration and the main function indexes of the antenna three-dimensional model;
and the data evaluation function module is configured to process the data stream according to the bit error rate of the satellite-ground link of the system to obtain a satellite data transmission link fault evaluation result, and comprises a link effective time calculation function module which calculates the satellite-ground distance, the communication distance, the link time and the effective data transmission time.
Optionally, in the satellite data transmission link fault evaluation system, the existing satellite antenna includes a microstrip antenna, a reflector antenna, a helical antenna, and a phased array antenna.
Optionally, in the satellite data transmission link fault evaluation system, the main functional indexes of the antenna three-dimensional model include a size parameter, an antenna axial ratio, a standing wave ratio, and a directional diagram.
Optionally, in the satellite data transmission link fault evaluation system, the data transmission system configuration includes a satellite orbit height, a satellite frequency, a satellite power, a satellite code modulation mode, and a ground receiving antenna.
Optionally, in the satellite data transmission link fault evaluation system, the antenna link calculation function module selects an antenna three-dimensional model according to different satellite orbit heights, satellite frequencies, satellite powers, satellite code modulation modes and ground receiving antennas;
inputting main function indexes of the antenna three-dimensional model into an antenna link calculation function module;
and the antenna link calculation function module outputs the bit error rate of the satellite-ground link of the system according to the main function index of the antenna three-dimensional model and the functional relation between the signal-to-noise ratio and the bit error rate of the antenna three-dimensional model.
Optionally, in the satellite data transmission link fault evaluation system, the antenna link calculation function module selects different antenna three-dimensional models under different satellite orbit heights and data transmission system configurations to update the link calculation parameters.
Optionally, in the satellite data transmission link fault evaluation system, the link calculation parameters include a main function index of the antenna three-dimensional model, and a functional relationship between a signal-to-noise ratio and a bit error rate of the antenna three-dimensional model.
Optionally, in the satellite data transmission link fault evaluation system, the link effective time calculation function module calculates a satellite-ground distance according to a satellite orbit position and a ground station position;
the link effective time calculation function module calculates communication distances under different gains according to a satellite antenna gain table;
the link effective time calculation function module is used for calculating link time by combining the satellite-ground state of a specific track;
and the link effective time calculation function module calculates the effective data transmission time of the satellite from the entry to the exit after the main function index of the antenna three-dimensional model is reduced.
Optionally, in the satellite data transmission link fault evaluation system, the decrease in antenna gain causes a decrease in communication distance, so that a visible arc of the data transmission link is shortened, and the link time is shortened.
Optionally, in the satellite data transmission link fault evaluation system, the data evaluation function module reads local data or receives, analyzes and displays a high-speed data stream transmitted, processes the data stream in combination with the bit error rate of the satellite-ground link or the bit error rate of the data transmission link of the system, outputs distorted data, and provides a data evaluation result.
In the satellite data transmission link fault evaluation system provided by the invention, the main function indexes of the antenna three-dimensional model are obtained and stored through the antenna three-dimensional model and the main function index database module, the error rate of a satellite-ground link of the system is calculated by the antenna link calculation function module, the satellite data transmission link fault evaluation result is obtained by the data evaluation function module, the satellite-ground distance, the communication distance, the link time and the data effective transmission time are calculated by the link effective time calculation function module, the influence analysis of the satellite data transmission antenna fault and damage on the satellite data transmission link can be realized, the data transmission link design is guided, and a degradation analysis table of the influence of gain reduction on the satellite data transmission performance and the whole satellite performance is established.
The invention relates to a satellite data transmission link fault evaluation system, which is used for establishing a data transmission satellite ground link calculation simulation model and a visibility calculation simulation model of satellites with different orbital altitudes, obtaining the influence of different degrees of damage of an antenna on satellite data transmission link transmission, and further evaluating the influence on a communication subsystem and a whole satellite task.
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Fig. 1 is a schematic view illustrating an evaluation process of a satellite data transmission link failure evaluation system according to an embodiment of the present invention.
Detailed Description
The satellite data transmission link failure evaluation system proposed by the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
In addition, features in different embodiments of the invention may be combined with each other, unless otherwise specified. For example, a feature of the second embodiment may be substituted for a corresponding or functionally equivalent or similar feature of the first embodiment, and the resulting embodiments are likewise within the scope of the disclosure or recitation of the present application.
The core idea of the invention is to provide a satellite data transmission link fault evaluation system to solve the problem that the data transmission between a satellite data transmission system and a ground station fails after the loss of the existing antenna.
In order to realize the idea, the invention provides a satellite data transmission link fault evaluation system, which comprises: the antenna three-dimensional model and main function index database module is configured to construct and store an antenna three-dimensional model through the existing satellite antenna and acquire and store main function indexes of the antenna three-dimensional model; the antenna link calculation function module is configured to calculate the bit error rate of the satellite-ground link of the system according to the data transmission system configuration and the main function indexes of the antenna three-dimensional model; and the data evaluation function module is configured to process the data stream according to the bit error rate of the satellite-ground link of the system to obtain a satellite data transmission link fault evaluation result, and comprises a link effective time calculation function module which calculates the satellite-ground distance, the communication distance, the link time and the effective data transmission time.
The present embodiment provides a satellite data transmission link failure evaluation system, as shown in fig. 1, including: the antenna three-dimensional model and main function index database module is configured to construct and store an antenna three-dimensional model through the existing satellite antenna and acquire and store main function indexes of the antenna three-dimensional model; the antenna link calculation function module is configured to calculate the bit error rate of the satellite-ground link of the system according to the data transmission system configuration and the main function indexes of the antenna three-dimensional model; and the data evaluation function module is configured to process the data stream according to the bit error rate of the satellite-ground link of the system to obtain a satellite data transmission link fault evaluation result, and comprises a link effective time calculation function module which calculates the satellite-ground distance, the communication distance, the link time and the effective data transmission time.
Under the normal working mode of the satellite, the satellite-ground distance can be calculated according to the positions of the satellite orbit and the ground station, on the basis of the distance, the link error code condition in the whole process can be calculated, if the error code rate is lower than the threshold in the process, the satellite can communicate with the ground station, the effective data transmission time is obtained, and if the error code rate is higher than the threshold, the satellite cannot normally communicate with the ground station. Therefore, the communication link is generally designed to keep the link error rate not exceeding the threshold value in the inbound process after being accessed at the lowest elevation angle. After the antenna is damaged, the electrical property is changed, the link table calculates the communication distance under different gains in the transit process, and then the effective time of the link is calculated by combining the satellite-ground state of the specific track, so that the effective data transmission time of the satellite in the whole process from the entry to the exit after the antenna parameters are reduced is given.
In an embodiment of the present invention, in the satellite data transmission link failure evaluation system, the existing satellite antenna includes a microstrip antenna, a reflector antenna, a helical antenna, and a phased array antenna.
In an embodiment of the present invention, in the satellite data transmission link failure evaluation system, the main functional indicators of the antenna three-dimensional model include a size parameter, an antenna axial ratio, a standing wave ratio and a directional pattern.
In an embodiment of the present invention, in the satellite data transmission link failure evaluation system, the data transmission system configuration includes a satellite orbit altitude, a satellite frequency, a satellite power, a satellite code modulation mode, and a ground receiving antenna.
In an embodiment of the present invention, in the satellite data transmission link fault evaluation system, the antenna link calculation function module selects an antenna three-dimensional model according to different satellite orbit heights, satellite frequencies, satellite powers, satellite code modulation modes and ground receiving antennas; inputting main function indexes of the antenna three-dimensional model into an antenna link calculation function module; and the antenna link calculation function module outputs the bit error rate of the satellite-ground link of the system according to the main function index of the antenna three-dimensional model and the functional relation between the signal-to-noise ratio and the bit error rate of the antenna three-dimensional model.
In an embodiment of the present invention, in the satellite data transmission link failure evaluation system, the antenna link calculation function module selects different antenna three-dimensional models under different satellite orbit altitudes and data transmission system configurations to update the link calculation parameters.
In an embodiment of the invention, in the satellite data transmission link fault evaluation system, the link calculation parameters include a main function index of the antenna three-dimensional model, and a functional relationship between a signal-to-noise ratio and a bit error rate of the antenna three-dimensional model.
In an embodiment of the present invention, in the satellite data transmission link fault evaluation system, the link effective time calculation function module calculates a satellite-ground distance according to a satellite orbit position and a ground station position; the link effective time calculation function module calculates communication distances under different gains according to a satellite antenna gain table; the link effective time calculation function module is used for calculating link time by combining the satellite-ground state of a specific track; and the link effective time calculation function module calculates the effective data transmission time of the satellite from the entry to the exit after the main function index of the antenna three-dimensional model is reduced.
In one embodiment of the invention, in the satellite data transmission link fault evaluation system, the reduction of the antenna gain leads to the shortening of the communication distance, so that the visible arc of the data transmission link is shortened, and the link time is shortened.
In an embodiment of the present invention, in the satellite data transmission link failure evaluation system, the data evaluation function module reads local data or receives, analyzes and displays a high-speed data stream transmitted, processes the data stream in combination with an error rate of a satellite-ground link or an error rate of a data transmission link of the system, and outputs distorted data to provide a data evaluation result.
In the satellite data transmission link fault evaluation system provided by the invention, the main function indexes of the antenna three-dimensional model are obtained and stored through the antenna three-dimensional model and the main function index database module, the error rate of a satellite-ground link of the system is calculated through the antenna link calculation function module, the satellite-ground distance, the communication distance, the link time and the effective data transmission time are calculated through the link effective time calculation function module, and the data evaluation function module obtains the satellite data transmission link fault evaluation result, so that the influence analysis of the satellite data transmission antenna fault and damage on the satellite data transmission link can be realized, the data transmission link design is guided, and a degradation analysis table of the influence of gain reduction on the satellite data transmission performance and the whole satellite performance is established.
The invention relates to a satellite data transmission link fault evaluation system, which is used for establishing a data transmission satellite ground link calculation simulation model and a visibility calculation simulation model of satellites with different orbital altitudes, obtaining the influence of different degrees of damage of an antenna on satellite data transmission link transmission, and further evaluating the influence on a communication subsystem and a whole satellite task.
The technical problems solved by the invention are as follows: the invention can realize the analysis of the influence of the satellite data transmission antenna fault and damage on the satellite data transmission link, guide the data transmission link design and establish a degradation analysis table of the influence of gain reduction on the satellite data transmission performance and the whole satellite performance.
The main functions of the antenna three-dimensional model and the main function index database module are as follows: providing the types of satellite data transmission antennas commonly used by the existing satellite, including a microstrip antenna, a reflector antenna, a helical antenna, a phased array antenna and the like, and constructing a three-dimensional model of the types, size parameters, antenna axial ratio, standing-wave ratio, directional diagram and other performance parameters;
the antenna link calculation module completes the main functions of outputting the error rate of the satellite-ground link of the system according to the functional relation between the signal-to-noise ratio and the error rate and the input antenna performance parameters according to the orbit heights of different satellites, the satellite frequency, the satellite power configuration, the satellite coding modulation mode configuration and the ground receiving antenna configuration, and the link calculation parameters can be updated correspondingly under the conditions of different orbit heights and data transmission system configuration.
The main functions completed by the link effective time calculation function module are as follows: according to the positions of the satellite orbit and the ground station, the satellite-ground distance can be calculated, meanwhile, the communication distances under different gains are calculated according to a satellite antenna gain table, the link time is calculated by combining the satellite-ground state of a specific orbit, and the effective data transmission time of the satellite in the whole process from the entry to the exit after the performance parameters of the antenna are reduced is given (the reduction of the antenna gain can shorten the communication distance, so that the visible arc section of the data transmission link is shortened, and the link time is shortened).
The main functions of the data evaluation module are: reading local data (pictures or other data) or receiving, analyzing and displaying high-speed data streams transmitted, processing the data streams by combining the error code condition of a data transmission link, outputting distorted data and giving out a data evaluation result.
In summary, the above embodiments have described in detail different configurations of the satellite data transmission link fault evaluation system, and it is needless to say that the present invention includes, but is not limited to, the configurations listed in the above embodiments, and any modifications made on the configurations provided by the above embodiments are within the scope of protection of the present invention. One skilled in the art can take the contents of the above embodiments to take a counter-measure.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The above description is only for the purpose of describing the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are intended to fall within the scope of the appended claims.
Claims (2)
1. A satellite data transmission link fault assessment system, comprising:
an antenna three-dimensional model and primary function index database module configured to build and store the antenna three-dimensional model from existing satellite antennas, an
Acquiring and storing main function indexes of the antenna three-dimensional model;
the antenna link calculation function module is configured to calculate the bit error rate of the satellite-ground link of the system according to the data transmission system configuration and the main function indexes of the antenna three-dimensional model;
the data evaluation function module is configured to process the data stream according to the bit error rate of the satellite-ground link of the system to obtain a fault evaluation result of the satellite data transmission link, and comprises a link effective time calculation function module which calculates the satellite-ground distance, the communication distance, the link time and the effective data transmission time;
the main functional indexes of the antenna three-dimensional model comprise a size parameter, an antenna axial ratio, a standing wave ratio and a directional diagram;
the data transmission system configuration comprises a satellite orbit height, a satellite frequency, a satellite power, a satellite coding modulation mode and a ground receiving antenna;
the antenna link calculation function module selects an antenna three-dimensional model according to different satellite orbit heights, satellite frequencies, satellite powers, satellite coding modulation modes and ground receiving antennas;
inputting main function indexes of the antenna three-dimensional model into an antenna link calculation function module;
the antenna link calculation function module outputs the error rate of the system satellite-ground link according to the main function index of the antenna three-dimensional model and the functional relation between the signal-to-noise ratio and the error rate of the antenna three-dimensional model;
the antenna link calculation function module selects different antenna three-dimensional models under different satellite orbit heights and data transmission system configurations so as to update link calculation parameters;
the link calculation parameters comprise the main function indexes of the antenna three-dimensional model, and the functional relation between the signal-to-noise ratio and the bit error rate of the antenna three-dimensional model;
the link effective time calculation function module calculates the satellite-ground distance according to the satellite orbit position and the ground station position;
the link effective time calculation function module calculates communication distances under different gains according to a satellite antenna gain table;
the link effective time calculation function module is used for calculating link time by combining the satellite-ground state of a specific track;
the link effective time calculation function module calculates the effective data transmission time of the satellite from the entry to the exit after the main function index of the antenna three-dimensional model is reduced;
the antenna gain is reduced to shorten the communication distance, so that the visible arc section of the data transmission link is shortened, and the link time is shortened;
the data evaluation function module reads local data or receives, analyzes and displays a transmitted high-speed data stream, processes the data stream by combining the error rate of a system satellite-ground link or the error rate of a data transmission link, outputs distorted data and gives a data evaluation result;
the method comprises the steps that a main function index of an antenna three-dimensional model is obtained and stored through an antenna three-dimensional model and a main function index database module, an antenna link calculation function module calculates the bit error rate of a satellite-ground link of a system, a data evaluation function module obtains a satellite data transmission link fault evaluation result, a link effective time calculation function module calculates the satellite-ground distance, the communication distance, the link time and the data effective transmission time, the influence analysis of the satellite data transmission link on satellite data transmission antenna faults and damages is realized, the data transmission link design is guided, and a degradation analysis table of the influence of gain reduction on the satellite data transmission performance and the whole satellite performance is established.
2. The satellite data transmission link failure evaluation system of claim 1, wherein the existing satellite antenna comprises a microstrip antenna, a reflector antenna, a helical antenna, and a phased array antenna.
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