A satellite autonomous Q / V band feed link establishment method based on programmable command groups

Abstract

This invention discloses a satellite autonomous power supply and link establishment method based on programmable command groups. The satellite integrated electronics acts as the control center, autonomously powering on, configuring, and powering off individual payload units according to the programmable command groups and link establishment list information. Simultaneously, the satellite integrated electronics broadcasts the satellite's orbit and attitude information to the payload controller at a specific frequency. The payload controller calculates the rotation angle of the feed antenna mechanism, enabling autonomous payload power-on / off and autonomous power supply and link establishment. Commands are grouped according to mission type, and can be added, modified, and deleted by group, and executed accordingly. Compared to single delay commands, programmable command groups are more suitable for satellites with diverse payload types, multiple mission types, and complex missions, offering advantages such as clear classification, flexible modification, and reusability. The satellite autonomous power supply and link establishment method based on programmable command groups can autonomously perform power supply and link establishment and disconnection actions according to the link establishment list, offering advantages such as autonomous operation and energy saving.

Description

Technical Field

[0001] This invention relates to the field of satellite autonomous operation technology, and in particular to a satellite autonomous Q / V power supply link establishment method based on a programmable command group. Background Technology

[0002] Q / V feed links are a method of communication between satellites and the ground that utilizes the Q and V frequency bands of electromagnetic waves. Compared with the commonly used C, Ku, and Ka bands, using the Q / V band for satellite communication has advantages such as high speed, wide bandwidth, and large capacity. It is the preferred frequency band for high-throughput broadband communication systems and is of great significance for building space-based broadband internet constellations.

[0003] In November 2018, the U.S. Federal Communications Commission (FCC) approved the second phase of Starlink's constellation deployment, consisting of 7,518 satellites using the Q / V band. In January 2020, GalaxySpace successfully launched its first low-Earth orbit (LEO) satellite constellation using the Q / V band, successfully verifying its communication speed, performance, and other technical and operational capabilities in orbit. Currently, domestic LEO satellite communication constellations widely utilize the Q / V band for high-speed, high-bandwidth satellite communication.

[0004] If high-capacity, high-speed communication is used in the Q / V band, the beamwidth needs to be designed to be narrow to achieve concentrated beam power. Therefore, the pointing of the satellite Q / V antenna and the ground Q / V antenna needs to be precisely aligned. Similar to the telemetry and control ephemeris tables commonly used in aerospace, the start time, end time, and target pointing position (latitude, longitude, and altitude) of satellite feed link establishment can be communicated by posting a feed link establishment table on the ground. However, due to onboard energy constraints and the heat dissipation capacity constraints of onboard units, some onboard units and boards are only powered on during operation and should be turned off when not in operation. Therefore, it is necessary to complete the power-on and configuration of units / boards before the link establishment start time and the power-off of units / boards after the link establishment end time. In addition, for reflector-fed antennas, antenna pre-pointing needs to be completed before accurately tracking the target ground station and establishing two-way communication. Figure 1 As shown, the entire startup and configuration time of the relevant unit / board and the antenna pre-pointing time are approximately X seconds. To maximize the utilization of the satellite's visible time and achieve the maximum feed link establishment time T1-T0 (for a satellite at 1100 km, a single visible duration is approximately 15 minutes), a series of power-on operations need to be completed before the satellite enters the country using delay commands, and a series of power-off operations need to be completed after the satellite leaves the country, so that the link establishment state can be maintained throughout the entire feed visibility arc.

[0005] For a low-Earth orbit (LEO) satellite at an altitude of 1100 km, one orbit takes approximately 108 minutes, with about six visible periods within China each day, each lasting about 15 minutes. The power-feeding and link-establishment tasks for each orbit can be completed by uploading delay commands one day in advance. However, due to the limited storage space of the satellite platform, frequent uploading of delay commands (approximately once per day) is necessary. For large-scale LEO satellite constellations, the number of uploaded delay commands increases exponentially. Taking a constellation of 108 LEO satellites as an example, assuming there are L1 commands for power-feeding and link-establishment, and L2 commands for power-off, each satellite enters China six times per day, Table 1 shows the number of power-feeding and link-establishment events and the number of uploaded power-on and power-off commands for this constellation. With approximately 230,000 power-feeding and link-establishment events annually, continuing to use ground-based uploading of delay commands would impose a significant workload on the ground control system, consume substantial satellite-to-ground communication bandwidth, and increase the cost of constellation system maintenance.

[0006] Table 1

[0007] Summary of the Invention

[0008] Conventional methods for establishing satellite power supply links using delayed command uploads suffer from several drawbacks in large-scale low-Earth orbit satellite constellations. The frequent power supply link establishment operations consume significant space-ground telemetry and control resources, as well as satellite platform command storage space, placing a heavy workload on the ground control system and increasing constellation system maintenance costs. Similarly, methods that autonomously power on and off payloads based on region often result in power-on times exceeding actual link establishment times, leading to unnecessary energy consumption. This invention fully utilizes the satellite platform's programmable command group functionality to provide a satellite autonomous Q / V power supply link establishment method based on programmable command groups.

[0009] This invention provides a programmable instruction grouping method, which groups instructions according to task type, allowing for grouping, modification, and deletion, and execution by group. Compared to single delay instructions, programmable instruction groups are more suitable for satellites with diverse payloads, multiple task types, and complex tasks, offering advantages such as clear classification, flexible modification, and reusability. The satellite autonomous power supply link establishment method based on programmable instruction groups can autonomously perform power supply link establishment and disconnection actions according to the link establishment list, offering advantages such as autonomous operation and energy saving.

[0010] This invention provides a satellite autonomous power supply link establishment method based on a programmable command group. The satellite integrated electronics acts as the control center. According to the programmable command group and the link establishment list information, the satellite autonomously performs power-on, configuration and power-off operations on the payload unit. At the same time, the satellite integrated electronics broadcasts the satellite's orbit and attitude information to the payload controller at a specific frequency. The payload controller calculates the rotation angle of the power supply antenna mechanism to realize the payload's autonomous power-on and power-off and autonomous power supply link establishment.

[0011] The specific implementation steps are as follows:

[0012] Step 1: The ground control system uploads "Programmed Command Group 1" (mission type: power supply link establishment start) and "Programmed Command Group 2" (mission type: power supply shutdown), which are pre-stored on the satellite platform. This operation only needs to be performed once. If the instructions for the power supply link establishment mission change, the programmed command group can be modified by uploading remote control commands.

[0013] Step 2: The ground control system uploads the "feeder link establishment list" to the satellite platform. The satellite platform saves the link establishment list and forwards it to the payload controller. The link establishment list contains "link establishment start time", "link establishment end time", and "ground station latitude and longitude". One link establishment list can contain the time information of N feeder link establishments.

[0014] Step 3: According to the time information of the power supply link establishment list, after the power-on time ("link establishment start time" X seconds in advance), the satellite platform calls the program control instruction group 1 to execute a series of power-on and configuration instructions to start the power supply link establishment. Generally, X is the number of seconds required to complete the power-on sequence, ensuring that the power-on action is completed at the "link establishment start time".

[0015] Step 4: After receiving the feed link list forwarded by the satellite platform, the payload controller saves it and calculates the angle that the feed antenna mechanism should rotate based on the "ground station latitude and longitude" in the link list and the local satellite orbit and attitude information broadcast by the satellite platform every second. The payload controller then controls the feed antenna to pre-point and track the ground station.

[0016] Step 5: According to the time information of the power supply link establishment list, after the power-off time ("link establishment end time" is delayed by Y seconds), the satellite platform calls the program control instruction group 2 to execute a series of instructions to shut down the relevant single machine / board for power supply link establishment. Generally, Y is the number of seconds reserved for the mechanism to return to zero after the power supply link establishment is completed.

[0017] Preferably, step 1 includes the following steps:

[0018] Step 1A: The ground control system configures the instruction parameters of a series of instructions (power-on instructions, configuration instructions, etc.) required for power supply link establishment, and configures the relative time interval for the execution of each instruction, and encapsulates them into the format of a programmable instruction group; the task type of this programmable instruction group is configured as "power supply link establishment start", and it is designated as programmable instruction group 1;

[0019] Step 1B: The ground control system configures the command parameters for a series of shutdown commands required for power supply link disconnection, and configures the relative time interval for the execution of each command, encapsulates them into the format of a programmable command group, and configures the task type of this programmable command group as "power supply shutdown", as programmable command group 2;

[0020] Step 1C: Ground control uploads program control command group 1 and program control command group 2 to the satellite platform through the conventional telemetry and control channel;

[0021] Step 1D: After receiving the program control command group, the satellite platform parses the task type of the program control command group, identifies whether it is a "power supply link establishment start" sequence or a "power supply shutdown" sequence, and saves it in the non-volatile storage area of ​​the satellite platform;

[0022] Step 1E: If you need to update the instruction parameters or the number of instructions in the programmable instruction group, regenerate the programmable instruction group, configure the task type, and upload it to the satellite platform to replace the programmable instruction group.

[0023] Preferably, step 2 includes the following steps:

[0024] Step 2A: The ground control system performs simulations based on the satellite orbit parameters to predict the future visible time information between the satellite and the ground station, including the "link establishment start time", "link establishment end time", and the corresponding "ground station latitude, longitude and altitude" information;

[0025] Step 2B: The ground control system encapsulates the satellite entry / exit time and ground station location information predicted in Step 2A into a feeder linked list format;

[0026] Step 2C: The ground control system encapsulates the power supply link list into a satellite-to-ground communication instruction format and uploads it to the satellite platform through the conventional telemetry and control channel;

[0027] Step 2D: The satellite platform identifies and parses the power supply link list as the time basis for autonomous operation, and forwards the power supply link list to the payload controller.

[0028] Preferably, step 3 includes the following steps:

[0029] Step 3A: The satellite platform compares the current onboard time with the time information in the power-on link establishment table to determine whether the power-on time has arrived, i.e., the "link establishment start time" is X seconds in advance. Generally, X is the number of seconds required to complete the power-on sequence. This ensures that all power-on and configuration actions have been completed by the time the "link establishment start time" arrives, and the satellite immediately enters the satellite-to-ground communication state.

[0030] Step 3B: If the onboard time reaches the power-on time, the satellite platform starts program control command group 1 (mission type: power supply link establishment start) and sets the start flag of program control command group 1 to "valid".

[0031] Step 3C: The satellite platform executes all instructions in program control instruction group 1 in sequence according to the preset time intervals within the program control instruction group to complete the power-on action.

[0032] Preferably, step 4 includes the following steps:

[0033] Step 4A: After receiving the feed link list forwarded by the satellite platform, the payload controller saves it and identifies the time information and ground station location information in the link list;

[0034] Step 4B: The payload controller receives local orbit and attitude information broadcast by the satellite platform every second;

[0035] Step 4C: The payload controller uses the satellite's orbit and attitude information and the ground station position information in the link establishment table to calculate the angle that the feed antenna mechanism should rotate, control the feed antenna to pre-point and track the ground station, complete the link establishment action, and maintain the link establishment state;

[0036] Preferably, step 5 includes the following steps:

[0037] Step 5A: The satellite platform compares the current onboard time with the time information in the feed link establishment table to determine whether the shutdown time has arrived. That is, the "link establishment end time" is delayed by Y seconds. Generally, Y is the number of seconds reserved for the feed antenna mechanism to return to the zero position, ensuring that the mechanism returns to the zero position after the "link establishment end time" arrives before performing the single unit / board shutdown action.

[0038] Step 5B: If the onboard time reaches the shutdown time, the satellite platform will activate program control command group 2 (mission type: power-off) and set the activation flag of program control command group 2 to "valid".

[0039] Step 5C: The satellite platform executes all commands in the process control command group 2 in sequence according to the preset time intervals within the command group to complete the shutdown action.

[0040] Power-on and power-off command sequences are uploaded to the satellite platform in the form of programmable command groups. Each command in the programmable command group has a configuration parameter of relative execution time. The programmable command group has the advantage of being uploaded once and reused repeatedly.

[0041] The satellite platform identifies the power supply link list and autonomously calls the corresponding programmable instruction group according to the "link start time" and "link end time" in the power supply link list to perform power-on, configuration or power-off operations on the payload unit.

[0042] The satellite platform broadcasts satellite orbit information to the payload controller at a frequency of 1 Hz. The payload controller has the ability to calculate the rotation angle of the feed antenna mechanism and control the antenna to perform pre-pointing and tracking based on the orbit and attitude information and the ground station position information.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] 1. This invention solves the management problem caused by the hundreds of thousands of power on / off cycles per year of the satellite-to-ground feeder links of large-scale constellations to the ground operation and control system;

[0045] 2. The application of this invention improves the autonomous operation capability of the constellation system, saves satellite platform instruction storage space, reduces the workload of the ground operation and control system, and lowers the operation and maintenance cost of the constellation system;

[0046] 3. The application of this invention only activates the relevant single units / boards during the time period when power supply and link establishment are required, so as to save satellite energy to the maximum extent while completing the on-orbit power supply and link establishment task. Attached Figure Description

[0047] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0048] Figure 1 The following is a timing diagram of the satellite's first-orbit power supply link establishment mission in the background technology.

[0049] Figure 2 This is the power supply linked list format used in this invention.

[0050] Figure 3 This is a block diagram of the satellite autonomous power supply and link establishment system of the present invention. Detailed Implementation

[0051] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0052] This invention discloses a satellite autonomous power supply link establishment method based on a programmable command group, realizing autonomous link establishment for high-speed communication between a large-scale constellation of satellites and a ground power supply station. The implementation device and method include satellite integrated electronics, a payload controller, a power supply controller, a power supply antenna, a power supply baseband, a telemetry and control antenna, a space router, a ground power supply station, a ground telemetry and control station, and a ground operations and control center.

[0053] Table 2 shows the format definition of the programmable instruction group of this invention. The programmable instruction group includes the elements "programmable instruction group ID", "number of instructions", "instruction execution time", and "instruction remote control package". The "programmable instruction group ID" represents the group number of the instructions; if the satellite's integrated electronic storage space is sufficient, multiple programmable instruction groups can be stored. The "number of instructions" represents the number of instructions contained in the programmable instruction group. The "instruction execution time" represents the execution time of the instruction, which is a relative time, specifically the time in seconds relative to the start time of the instruction group. The "instruction remote control package" is the codeword of the instruction. A programmable instruction group can contain M instructions for executing a specific task. When using it, the instructions required to execute the task are added to the programmable instruction group according to the format, and the relative time interval for instruction execution is configured.

[0054] Table 2

[0055]

[0056] Figure 2 The link establishment list format used in this invention is presented. Similar to a satellite telemetry and control ephemeris table, a link establishment list can contain N segments of link establishment information. Elements involved in the link establishment list include "link establishment list segment number," "link establishment start time," "link establishment end time," and "ground station latitude, longitude, and altitude." The "link establishment list segment number" uniquely identifies the link establishment list segment, and the satellite stores and updates the link establishment list content based on the segment number. The "link establishment start time" represents the start time of link establishment for this segment, i.e., the time when the satellite and the feed station become visible. The "link establishment end time" represents the end time of link establishment for this segment, i.e., the time when the satellite and the feed station become invisible. The "ground station latitude, longitude, and altitude" represent the ground station information that established a link with the satellite, including the ground station's longitude, latitude, and altitude. The payload controller calculates the pointing mechanism based on this information and sends it to the feeder controller, which then controls the feeder antenna to pre-point and track the ground station.

[0057] Figure 3A block diagram of the satellite autonomous feed link establishment process of this invention is provided. First, the operations control center uploads power-on and power-off programmable command groups to the satellite integrated electronics via the telemetry, tracking, and command (TT&C) stations. The satellite integrated electronics identifies and saves these commands. Simultaneously, the operations control center predicts the future visible time between the satellite and the ground station based on satellite orbit data, generates a feed link establishment list, and uploads it to the satellite integrated electronics. The integrated electronics receives the link establishment list, saves it, and forwards it to the payload controller. Second, the satellite integrated electronics parses the programmable command groups and the feed link establishment list. Based on the time information in the feed link establishment list and the command information in the programmable command groups, it sends control commands to the payload controller at the power-on time ("link establishment start time" X seconds in advance) to execute the power-on link establishment task; and at the power-off time ("link establishment end time" Y seconds in delay) to execute the power-off link disconnection task. Additionally, the satellite integrated electronics broadcasts its own orbit and attitude data to the payload controller every second via the control bus. The payload controller calculates the feed antenna pointing based on the orbit and attitude information and the ground station position information, and controls the antenna to rotate and track. Finally, after the satellite feed antenna and the ground gateway station establish a link, high-capacity data transmission and distribution can be carried out through the feed baseband and space router. Among them, the power-on programmable command group and the power-off programmable command group only need to be uploaded once. The operation and control center only needs to update the feed link establishment list periodically and upload it to the satellite to complete the daily feed link establishment task.

[0058] Power-on and power-off command sequences are uploaded to the satellite platform in the form of programmable command groups. Each command in the programmable command group has a configuration parameter of relative execution time. The programmable command group has the advantage of being uploaded once and reused repeatedly.

[0059] The satellite platform identifies the power supply link list and autonomously calls the corresponding programmable instruction group according to the "link start time" and "link end time" in the power supply link list to perform power-on, configuration or power-off operations on the payload unit.

[0060] The satellite platform broadcasts satellite orbit and attitude information to the payload controller at a frequency of 1 Hz. The payload controller has the ability to calculate the rotation angle of the feed antenna mechanism and control the antenna to perform pre-pointing and tracking based on the orbit and attitude information and the ground station position information.

[0061] This invention provides a programmable instruction grouping method, which groups instructions according to task type, allowing for grouping, modification, and deletion, and execution by group. Compared to single delay instructions, programmable instruction groups are more suitable for satellites with diverse payloads, multiple task types, and complex tasks, offering advantages such as clear classification, flexible modification, and reusability. The satellite autonomous power supply link establishment method based on programmable instruction groups can autonomously perform power supply link establishment and disconnection actions according to the link establishment list, offering advantages such as autonomous operation and energy saving.

[0062] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A satellite autonomous Q / V band feed link establishment method based on programmable command groups, characterized in that: The satellite integrated electronics serves as the control center. Based on the programmable command group and the link establishment information, it autonomously performs power-on, configuration, and power-off operations on the individual payload units. At the same time, the satellite integrated electronics broadcasts the satellite's orbit and attitude information to the payload controller at a specific frequency. The payload controller calculates the rotation angle of the feed antenna mechanism to realize the payload's autonomous power-on and power-off and autonomous feed link establishment. The specific implementation steps are as follows: Step 1: Ground control uploads programmable command group 1 and programmable command group 2 pre-stored on the satellite platform. The task type of programmable command group 1 is: power supply link establishment start, and the task type of programmable command group 2 is: power supply shutdown. This operation only needs to be performed once. If the instructions for the power supply link establishment task change, the programmable command group can be modified through the upload remote control command. Step 2: The ground control system uploads the power supply link list to the satellite platform. The satellite platform saves the power supply link list and forwards it to the payload controller. The power supply link list contains the link start time, link end time, and ground station latitude and longitude. One power supply link list can contain the time information of N power supply link establishments. Step 3: According to the time information of the power supply link establishment list, after the power-on time, the satellite platform calls the program control instruction group 1 to execute a series of power-on and configuration instructions to start the power supply link establishment. The power-on time is X seconds before the link establishment start time, where X is the number of seconds required to complete the power-on sequence, ensuring that the power-on action is completed at the link establishment start time. Step 4: After receiving the feed link list forwarded by the satellite platform, the payload controller saves it and calculates the angle that the feed antenna mechanism should rotate based on the latitude and longitude of the ground station in the link list and the orbit and attitude information of the local satellite broadcast by the satellite platform every second. The payload controller then controls the feed antenna to pre-point and track the ground station. Step 5: According to the time information of the power supply link establishment list, after the power-off time, the satellite platform calls the program control instruction group 2 to execute a series of instructions to shut down the relevant single machines / boards of the power supply link establishment. The power-off time is Y seconds after the link establishment end time, where Y is the number of seconds reserved for the mechanism to return to the zero position after the power supply link establishment ends.

2. The satellite autonomous Q / V band feed link establishment method based on a programmable command group according to claim 1, characterized in that: Step 1 includes the following steps: Step 1A: The ground control system configures the instruction parameters for a series of instructions required for power supply link establishment. The series of instructions required for power supply link establishment includes power-on instructions and configuration instructions. The relative time interval for executing each instruction is configured and encapsulated into a programmable instruction group format. The task type of this programmable instruction group is configured as power supply link establishment start, as programmable instruction group 1. Step 1B: The ground control system configures the command parameters of a series of shutdown commands required for power supply link disconnection, and configures the relative time interval for the execution of each command, encapsulates them into the format of a programmable command group, and configures the task type of the programmable command group as power supply shutdown, as programmable command group 2; Step 1C: Ground control uploads program control command group 1 and program control command group 2 to the satellite platform through the conventional telemetry and control channel; Step 1D: After receiving the program control command group, the satellite platform parses the task type of the program control command group, identifies whether it is a power supply link establishment start sequence or a power supply shutdown sequence, and saves it in the non-volatile storage area of ​​the satellite platform. Step 1E: To update the instruction parameters or number of instructions in the programmable instruction group, regenerate the programmable instruction group, configure the task type, and upload it to the satellite platform to replace the programmable instruction group.

3. The satellite autonomous Q / V band feed link establishment method based on a programmable command group according to claim 2, characterized in that: Step 2 includes the following steps: Step 2A: Ground control performs simulation based on satellite orbit parameters to predict the future visible time information between the satellite and the ground station, including the link establishment start time, link establishment end time, and the corresponding ground station latitude and longitude information; Step 2B: The ground control system encapsulates the satellite entry / exit time and ground station location information predicted in Step 2A into a feeder linked list format; Step 2C: The ground control system encapsulates the power supply link list into a satellite-to-ground communication instruction format and uploads it to the satellite platform through the conventional telemetry and control channel; Step 2D: The satellite platform identifies and parses the power supply link list as the time basis for autonomous operation, and forwards the power supply link list to the payload controller.

4. The satellite autonomous Q / V band feed link establishment method based on a programmable command group according to claim 3, characterized in that: Step 3 includes the following steps: Step 3A: The satellite platform compares the current onboard time with the time information in the power-on link establishment table to determine whether it is time to power on. That is, the link establishment start time is advanced by X seconds, where X is the number of seconds required to complete the power-on sequence. This ensures that all power-on and configuration actions have been completed by the time the link establishment start time arrives, and the satellite immediately enters the satellite-to-ground communication state. Step 3B: If the satellite time reaches the power-on time, the satellite platform starts program control command group 1. The task type of program control command group 1 is: power supply link establishment start. The start flag of program control command group 1 is set to valid. Step 3C: The satellite platform executes all instructions in program control instruction group 1 in sequence according to the preset time intervals within the program control instruction group to complete the power-on action.

5. The satellite autonomous Q / V band feed link establishment method based on a programmable command group according to claim 4, characterized in that: Step 4 includes the following steps: Step 4A: After receiving the feed link list forwarded by the satellite platform, the payload controller saves it and identifies the time information and ground station location information in the link list; Step 4B: The payload controller receives local orbit and attitude information broadcast by the satellite platform every second; Step 4C: The payload controller uses the satellite's orbit and attitude information and the ground station position information in the link establishment table to calculate the angle that the feed antenna mechanism should rotate, control the feed antenna to pre-point and track the ground station, complete the link establishment action, and maintain the link establishment state.

6. The satellite autonomous Q / V band feed link establishment method based on a programmable command group according to claim 5, characterized in that: Step 5 includes the following steps: Step 5A: The satellite platform compares the current onboard time with the time information in the feed link establishment table to determine whether it is time to shut down. That is, the link establishment end time is delayed by Y seconds, where Y is the number of seconds reserved for the feed antenna mechanism to return to the zero position. This ensures that the mechanism returns to the zero position after the link establishment end time is reached before the single unit / board shutdown action is performed. Step 5B: If the onboard time reaches the shutdown time, the satellite platform starts program control command group 2. The task type of program control command group 2 is power-off. The start flag of program control command group 2 is set to valid. Step 5C: The satellite platform executes all commands in the process control command group 2 in sequence according to the preset time intervals within the command group to complete the shutdown action.

7. The satellite autonomous Q / V band feed link establishment method based on a programmable command group according to claim 1, characterized in that: Power-on and power-off command sequences are uploaded to the satellite platform in the form of programmable command groups. Each command in the programmable command group has a configuration parameter of relative execution time. Programmable command groups have the advantage of being uploaded once and reused repeatedly.

8. The satellite autonomous Q / V band feed link establishment method based on a programmable command group according to claim 1, characterized in that: The satellite platform identifies the power supply link list and autonomously calls the corresponding programmable instruction group based on the link start time and link end time in the power supply link list to perform power-on, configuration, or power-off operations on the payload unit.

9. The satellite autonomous Q / V band feed link establishment method based on a programmable command group according to claim 1, characterized in that: The satellite platform broadcasts satellite orbit and attitude information to the payload controller at a frequency of 1 Hz. The payload controller has the ability to calculate the rotation angle of the feed antenna mechanism and control the antenna to perform pre-pointing and tracking based on the satellite's orbit and attitude information and the ground station's position information.

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