A method for autonomous health management of a high-orbit remote sensing satellite TT&C channel

Abstract

The application provides a kind of method for high orbit remote sensing satellite measurement control channel autonomous health management, the measurement control channel is established by spread spectrum transponder or multimode spread frequency transponder;Measurement control solid is placed in corresponding spread spectrum transponder, for enhancing the stability of the measurement control channel established by the spread spectrum transponder;Monitoring process includes: system management unit receives telemetry from each measurement control channel by bus with T0 period, and carries out health treatment to each measurement control channel by bus simultaneously.The application improves the timeliness of the response to the on-orbit failure of the measurement control channel, eliminates or reduces the influence of the on-orbit failure of the measurement control channel on the user, simplifies the long-term management and control of the satellite to the measurement control channel, and the complexity of the autonomous treatment measures is low, and the requirement for on-board processing resources is low.

Description

Technical Field

[0001] This invention relates to a method for autonomous health management of telemetry and control channels for high-orbit remote sensing satellites, belonging to the field of autonomous health management of high-orbit remote sensing satellites. Background Technology

[0002] The harsh environment of high-orbit space makes the autonomous health management system for high-orbit remote sensing satellites a crucial technology for ensuring their long-term stable operation. The telemetry, tracking, and command (TT&C) channel is a vital component of communication between the satellite and the ground control center. It is responsible for transmitting telemetry data from the high-orbit remote sensing satellite to the ground control center, enabling real-time monitoring of the satellite's status. Therefore, autonomous health monitoring of the TT&C channel is essential to ensure timely detection and on-orbit handling of any anomalies.

[0003] High-orbit remote sensing satellites currently possess significant development potential, but their autonomous health management methods urgently need improvement, particularly for the telemetry, tracking, and command (TT&C) channels. Existing methods for autonomous health management of TT&C channels still lack timeliness in handling anomalies, place substantial demands on onboard computing resources, require long-term management and control by the remote sensing satellite itself, and fail to effectively mitigate the impact of malfunctions on users. Summary of the Invention

[0004] The technical problem solved by this invention is to overcome the shortcomings of the prior art and propose a method for autonomous health management of the telemetry and control channel of a high-orbit remote sensing satellite. This method improves the timeliness of response to on-orbit faults in the telemetry and control channel, eliminates or reduces the impact of on-orbit faults on users, simplifies the long-term management and control of the telemetry and control channel by the satellite, and has low complexity of autonomous handling measures and low requirements for on-board processing resources.

[0005] The technical solution of this invention is: a method for autonomous health monitoring of a high-orbit remote sensing satellite telemetry and control channel, wherein the telemetry and control channel is established through a spread spectrum transponder or a multi-mode spread spectrum hopping transponder; a telemetry and control unit is placed after the corresponding spread spectrum transponder to enhance the stability of the telemetry and control channel established by the spread spectrum transponder; the monitoring process includes: the system management unit receiving telemetry data from each telemetry and control channel via a bus at a period of T0, and simultaneously performing health checks on each telemetry and control channel via the bus.

[0006] The health monitoring and control channel health management via bus includes:

[0007] 1) When the telemetry and control channel is disconnected without proper handling, the system management unit generates a major event report;

[0008] 2) Perform autonomous processing in the first monitoring and control channel to establish detection criteria:

[0009] Criterion 1: The power-on state of the telemetry and control fixed amplifier N1 is off, or the power-on state of the spread spectrum transponder N1 is off;

[0010] Criterion 2: Measurement and control fixed amplifier N 多模 The power-on status is off, or the power-on status of the multimode spread frequency hopping transponder is off;

[0011] The system management unit determines whether the above criteria are met simultaneously. If the criteria are met simultaneously, the condition is established once. If the condition is established three times in a row, the process proceeds to step 3.

[0012] 3) Determine the telemetry status of the N1 power supply of the measurement and control fixed amplifier;

[0013] 4) When the telemetry status of the power supply of the fixed-state amplifier N1 is "powered on", proceed to step 5); when the telemetry status of the power supply of the fixed-state amplifier N1 is "not powered on", the system management unit sends the instruction: "Power on the fixed-state amplifier N1", and proceeds to step 7).

[0014] 5) The system management unit sends the command: Power on spread spectrum transponder N1;

[0015] 6) After an interval t1, the system management unit continues to send commands; the spread spectrum transponder N1 is turned on;

[0016] 7) Return to step 3) and proceed to the next autonomous processing stage of the monitoring and control channel;

[0017] By handling the abnormal situation of the telemetry and control channel disconnection through the above steps 1) to 7), the connection of the satellite-to-ground telemetry and control channel is restored.

[0018] If N exists i If i = 2, 3…n, it indicates the existence of a hot backup telemetry and control channel; in this case, criterion 3 is added: telemetry and control fixed amplifier N i Power-on status is off or spread spectrum transponder N i The power-on state is off.

[0019] The t1 ≥ 3s.

[0020] The execution time of steps 1) to 7) is no more than 20 seconds.

[0021] When the measurement and control fixed amplifier N i When the power-on state is "on", but the bus voltage is less than the set threshold U0, the measurement and control fixed amplifier N... i Automatic power-off protection.

[0022] When the timer reaches the set timing threshold T0, the system management unit sends a command: Spread spectrum transponder N i Or a multi-mode spread spectrum hopping transponder reset command; simultaneously, the spread spectrum transponder N... i Alternatively, the timer of the multi-mode spread frequency hopping transponder can be reset to zero and restarted.

[0023] The T0≤1s.

[0024] The beneficial effects of this invention are:

[0025] 1) The method of the present invention takes into account both the abnormal handling and normal protection of the telemetry and control channel, and greatly reduces the abnormal time of the telemetry and control channel link;

[0026] 2) When the method of the present invention detects an abnormality in the measurement and control channel, the selected autonomous handling method has low complexity and fast fault recovery speed. Attached Figure Description

[0027] Figure 1 This is a flowchart of the autonomous handling process when the telemetry and control channel is disconnected. Detailed Implementation

[0028] like Figure 1 As shown, this invention discloses a method for autonomous health management of a high-orbit remote sensing satellite telemetry and control channel. The satellite-to-ground telemetry and control channel is established through spread spectrum transponder A, spread spectrum transponder B, and a multi-mode spread frequency hopping transponder. These three channels serve as hot backups for each other, with spread spectrum transponder B acting as a hot backup for spread spectrum transponder A. The multi-mode spread frequency hopping transponder possesses multi-mode switching capabilities. A fixed-point telemetry and control amplifier is used to enhance the satellite-to-ground channel signal. The system management unit receives telemetry data from the telemetry and control channel via a 1-second cycle through the bus and simultaneously performs health checks on the telemetry and control channel via the bus.

[0029] The following are the autonomous handling of anomalies and the autonomous protection of normal operation in the telemetry and control channel:

[0030] 1. If the telemetry and control channel is not established, follow these steps for autonomous handling:

[0031] 1) When the telemetry and control channel is disconnected without proper handling, the system management unit generates a major event report;

[0032] 2) Perform autonomous processing in the first monitoring and control channel to establish detection criteria:

[0033] Criterion 1: The power-on state of the telemetry and control fixed amplifier N1 is off, or the power-on state of the spread spectrum transponder N1 is off;

[0034] Criterion 2: Measurement and control fixed amplifier N 多模 The power-on status is off, or the power-on status of the multimode spread frequency hopping transponder is off;

[0035] The system management unit determines whether the above criteria are met simultaneously. If the criteria are met simultaneously, the condition is established once. If the condition is established three times in a row, the process proceeds to step 3.

[0036] 3) Determine the telemetry status of the N1 power supply of the measurement and control fixed amplifier;

[0037] 4) When the telemetry status of the power supply of the fixed-state amplifier N1 is "powered on", proceed to step 5); when the telemetry status of the power supply of the fixed-state amplifier N1 is "not powered on", the system management unit sends the instruction: "Power on the fixed-state amplifier N1", and proceeds to step 7).

[0038] 5) The system management unit sends the command: Power on spread spectrum transponder N1;

[0039] 6) After an interval t1, the system management unit continues to send commands; the spread spectrum transponder N1 is turned on;

[0040] 7) Return to step 3) and proceed to the next autonomous processing stage of the monitoring and control channel;

[0041] By handling the abnormal situation of the telemetry and control channel disconnection through the above steps 1) to 7), the connection of the satellite-to-ground telemetry and control channel is restored.

[0042] The above processing procedure takes no more than 20 seconds to execute, thus promptly addressing the abnormal disconnection of the telemetry and control channel and reducing the impact of the disconnection on the user experience.

[0043] To prevent single-event upsets, software malfunctions, or other issues from affecting the spread spectrum transponder and causing control channel failure, the following protection mechanism is implemented: When the timer reaches 48 hours, the system management unit sends a command to reset the spread spectrum transponder. Simultaneously, the spread spectrum transponder timer is reset to zero and restarts.

[0044] This method employs low-complexity, high-real-time measures to handle abnormal states such as telemetry and control channel disconnection, telemetry and control fixed amplifier voltage anomalies, and telemetry and control fixed amplifier shutdown anomalies, thereby significantly reducing the impact of telemetry and control channel anomalies on user operation. Simultaneously, it implements normalized autonomous protection for the telemetry and control channels, effectively mitigating the impact of single-event and software anomalies. Through rapid autonomous anomaly handling and normalized autonomous protection, this method effectively maintains the health of the telemetry and control channels of high-orbit remote sensing satellites.

[0045] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present invention based on the above-disclosed technical content without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the protection scope of the technical solutions of the present invention.

Claims

1. A method for autonomous health monitoring of a high-orbit remote sensing satellite telemetry and control channel, characterized in that, The telemetry and control channel is established via a spread spectrum transponder or a multimode spread spectrum hopping transponder. The telemetry and control system is placed after the corresponding spread spectrum transponder to enhance the stability of the telemetry and control channel established by the spread spectrum transponder. The monitoring process includes: the system management unit receives telemetry data from each measurement and control channel via the bus at a T0 cycle, and performs health checks on each measurement and control channel via the bus. The health monitoring and control channel health management via bus includes: 1) When the telemetry and control channel is disconnected without proper handling, the system management unit generates a major event report; 2) Perform autonomous processing in the first monitoring and control channel to establish detection criteria: Criterion 1: The power-on state of the telemetry and control fixed amplifier N1 is off, or the power-on state of the spread spectrum transponder N1 is off; Criterion 2: Measurement and control fixed amplifier N 多模 The power-on status is off, or the power-on status of the multimode spread frequency hopping transponder is off; The system management unit determines whether the above criteria are met simultaneously. If the criteria are met simultaneously, the condition is considered true once. If the condition is true three times consecutively, the process proceeds to step 3. 3) Determine the telemetry status of the N1 power supply of the measurement and control fixed amplifier; 4) When the telemetry status of the N1 power supply is "powered on", proceed to step 5); when the N1 power supply is "discharged", the system management unit sends a command: "Power on N1", and proceeds to step 7). 5) The system management unit sends the command: Power on spread spectrum transponder N1; 6) After an interval t1, the system management unit continues to send commands; the spread spectrum transponder N1 is turned on; 7) Return to step 3) and proceed to the next autonomous processing stage of the monitoring and control channel; After handling the abnormal situation of the telemetry and control channel disconnection through the above steps 1) to 7), the connection between the satellite and ground telemetry and control channels is restored. If N exists i If i = 2, 3…n, it indicates the existence of a hot backup telemetry and control channel; in this case, criterion 3 is added: telemetry and control fixed amplifier N i Power-on status is off or spread spectrum transponder N i The power-on state is off.

2. The method for autonomous health monitoring of a high-orbit remote sensing satellite telemetry and control channel according to claim 1, characterized in that, The t1 ≥ 3s.

3. The method for autonomous health monitoring of a high-orbit remote sensing satellite telemetry and control channel according to claim 1, characterized in that, The execution time of steps 1) to 7) is no more than 20 seconds.

4. The method for autonomous health monitoring of a high-orbit remote sensing satellite telemetry and control channel according to claim 1, characterized in that, When the measurement and control fixed amplifier N i When the power-on state is "on", but the bus voltage is less than the set threshold U0, the measurement and control fixed amplifier N... i Automatic power-off protection.

5. A method for autonomous health monitoring of a high-orbit remote sensing satellite telemetry and control channel according to claim 1, characterized in that, When the timer reaches the set timing threshold T0, the system management unit sends a command: Spread spectrum transponder N i Or a multi-mode spread spectrum hopping transponder reset command; simultaneously, the spread spectrum transponder N... i Alternatively, the timer of the multimode spread frequency hopping transponder can be reset to zero and restarted.

6. The method for autonomous health monitoring of a high-orbit remote sensing satellite telemetry and control channel according to claim 1, characterized in that, The T0≤1s.

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