Satellite on-orbit telemetry data on-demand system design method, medium and equipment

Abstract

The invention provides a satellite on-orbit telemetry data on-demand system design method, a medium and equipment. The method comprises the following steps: adding a blank on-demand telemetry packet by integrating an original telemetry scheduling table of electronic software; the integrated electronic software receives the on-demand telemetering content, sets a control remote control number, and constructs a mapping relation between the on-demand telemetering packet data filling content and a telemetering pool; in response to the downloading period setting instruction, finishing modification of the downloading scheduling period of the on-demand telemetry packet; in response to the storage period setting instruction, finishing modification of the on-demand telemetering storage period; receiving an on-demand duration setting remote control instruction, and setting the on-demand duration of this time; after the setting of the on-demand duration is completed, setting downlink quasi-forbidding of the on-demand telemetry packet as a criterion; in the packing process of the on-demand telemetering packet, receiving and processing on-demand data in real time, and packing and downloading the on-demand data; configuring a current on-demand telemetering packet analysis table on the ground, receiving on-demand telemetering in real time, and analyzing and monitoring in real time; and when the on-satellite time reaches the end moment of the on-demand duration, the on-satellite autonomously closes the on-demand function.

Description

Technical Field

[0001] The present invention relates to the technical field of on-board software telemetry data processing, and in particular, to a design method, medium and device for a satellite on-orbit telemetry data on-demand system. Background Art

[0002] Modern satellites have multiple functions and high value, and are capable of providing high-continuity services. Satellites operate in a vacuum, extreme temperature, and strong radiation space environment hundreds to tens of thousands of kilometers above the ground for a long time. To understand their on-orbit working status and detect problems in a timely manner, the acquisition, processing, and downlink of on-board telemetry data are crucial. However, in the prior art, the telemetry content is organized and downlinked according to pre-set content, and after software compilation, it cannot be changed, which is not only poor in flexibility, but also in case of emergencies, due to the limitedness of TT&C resources, many data that were not originally designed for real-time downlink cannot be viewed, increasing the difficulty of troubleshooting on-board problems.

[0003] The troubleshooting of on-board problems may lead to mission delays, satellite performance degradation, or even mission failures due to insufficient telemetry data evidence, resulting in huge economic losses and interruptions in scientific research work. In addition, with the diversification and complexity of satellite missions, the types of telemetry data downlink are increasing, which requires the organization and processing method of on-board telemetry to be more flexible and convenient. Therefore, a flexible and easy-to-operate design method for a satellite telemetry data on-demand system is needed.

[0004] Patent application document CN111417205A discloses a method and satellite system for transmitting downlink signaling using dynamic spot beams, including: establishing a geometric relationship model of the space-ground link based on the orbital parameter information of each satellite, the satellite antenna payload configuration information, and the position information of multiple ground target areas in the satellite system; determining, based on the geometric relationship model, the set of all visible satellite spot beams for each ground target area to obtain multiple initial spot beam sets; obtaining the target constraint conditions of each satellite in the satellite system when transmitting downlink signaling using spot beams and the transmission requirements of users; determining, in the multiple initial spot beam sets, the spot beam set that satisfies the target constraint conditions and the transmission requirements to obtain the target spot beam set; and transmitting downlink signaling to multiple ground target areas based on the target spot beam set. However, this patent cannot completely solve the existing technical problems and cannot meet the requirements of the present invention. Summary of the Invention

[0005] Aiming at the defects in the prior art, the purpose of the present invention is to provide a design method, medium and device for a satellite on-orbit telemetry data on-demand system.

[0006] According to the design method for a satellite on-orbit telemetry data on-demand system provided by the present invention, the following steps are included:

[0007] Step S1: In the original telemetry scheduling table of the satellite integrated electronic software, add a column for on-demand telemetry packets, and reload the satellite telemetry packet scheduling table;

[0008] Step S2: Construct a mapping relationship table between the content of the on-demand telemetry packet data field and the telemetry pool;

[0009] Step S3: The telemetry on-demand system of the integrated electronic software receives an uplink remote control command to set the real-time downlink period for on-demand telemetry. The downlink period of the on-demand telemetry packet will be based on this setting;

[0010] Step S4: The telemetry on-demand system of the integrated electronic software receives an uplink remote control command to set the delay storage period for on-demand telemetry. The cycle of the platform small fixed storage module for the on-demand telemetry packet is based on this setting;

[0011] Step S5: According to the current on-demand duration value, obtain the current on-board time and calculate the on-board time when the on-demand ends;

[0012] Step S6: Set the transmission permission of the on-demand telemetry packet in the telemetry scheduling table to permitted, and the on-demand system starts the function of transmitting on-demand telemetry;

[0013] Step S7: The on-demand telemetry packet obtains data from the telemetry pool according to the mapping relationship of the telemetry pool data index table, and fills the real-time packet into the downlink telemetry frame in real-time mode;

[0014] Step S8: According to the content of the current on-demand data, configure the on-demand telemetry packet parsing table on the ground, receive the on-demand telemetry packet in real-time, and perform parsing, processing and monitoring of the on-demand data;

[0015] Step S9: When the on-board time reaches the end time of this on-demand, the telemetry on-demand system of the integrated electronic software autonomously closes the telemetry on-demand function and ends this telemetry on-demand.

[0016] Preferably, in step S1, the original telemetry scheduling table of the integrated electronic software is a scheduling table with pre-determined scheduling strategies and packet assembly contents. Add a whiteboard on-demand telemetry packet scheduling column, and reload the telemetry scheduling table with the on-demand telemetry packet into the integrated electronic software. The on-demand telemetry packet will participate in the satellite telemetry scheduling together with other preset telemetry packets in the scheduling table.

[0017] Preferably, step S2 includes the following steps:

[0018] Step S21: The content of the on-demand telemetry packet consists of individual bytes, and each component byte is uniquely identified by the satellite telemetry data application process identifier and the channel number;

[0019] Step S22: The telemetry pool data of the integrated electronic software is composed of the splicing and storage of various satellite telemetry data. The single-byte data in the telemetry pool is externally applied and represented by the message source index number and the unique identification of the offset within the source;

[0020] Step S23: Construct a mapping relation table between the data content of the on-demand telemetry packet data field and the telemetry pool, and convert the satellite application process identifier and the channel number into the telemetry pool data message source index number and the offset within the source;

[0021] Step S24: Match the satellite telemetry data application process identifier with the telemetry source table in the telemetry pool. The row number where the telemetry data is located in the telemetry source table is the telemetry pool data message index number, and the channel number is equivalent to the offset within the source;

[0022] Step S25: The integrated electronic software telemetry data on-demand system receives the uplink on-demand setting remote control injection count, and converts the on-demand of the data content of the on-demand telemetry packet data field into a method of the telemetry pool data, thereby completing the construction of the mapping relation table between the data content of the on-demand telemetry packet data field and the telemetry pool.

[0023] Preferably, in step S3, the downlink period is counted in 0.5 s, the integrated electronic software telemetry on-demand system runs at a period of 0.5 s, and when the running period reaches the downlink period, the on-demand telemetry is downlinked.

[0024] Preferably, in step S4, the storage period is counted in 0.5 s, the integrated electronic software telemetry on-demand system runs at a period of 0.5 s, and when the running period reaches the storage period, the on-demand telemetry is stored in the platform small fixed storage module. When the satellite is flying overseas, the telemetry historical data depends on the telemetry data stored in the platform small fixed storage module.

[0025] Preferably, in step S5, the integrated electronic software telemetry on-demand system receives the uplink remote control command, obtains the on-board time counted in 0.1 ms through the drive interface, converts the on-demand duration in the uplink remote control command into a count in 0.1 ms, and adds the count in 0.1 ms to the currently obtained on-board time. The calculated result is the on-board end time of the on-demand.

[0026] Preferably, in step S7, mark the agreed on-demand telemetry packet application process identifier, fill in the packet sequence count, fill in the on-demand telemetry packet length, and perform real-time packet assembly and fill it into the real-time mode downlink telemetry frame to complete the on-demand telemetry packet assembly and downlink.

[0027] Preferably, in step S9, during the periodic operation of the integrated electronic software telemetry on-demand system, the on-board time is periodically obtained. In each period, the obtained on-board time is compared with the on-demand end time. When the on-board time is greater than or equal to the current on-demand end time, the on-demand system sets the on-demand telemetry packet downlink permission in the telemetry scheduling table to prohibited, clears the mapping relation table between the data content of the on-demand telemetry packet data field and the telemetry pool, and independently closes the on-demand telemetry function to end the current telemetry on-demand.

[0028] A computer-readable storage medium storing a computer program according to the present invention, wherein when the computer program is executed by a processor, the steps of the satellite on-orbit telemetry data on-demand system design method are implemented.

[0029] An electronic device according to the present invention includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the computer program is executed by the processor, the steps of the satellite on-orbit telemetry data on-demand system design method are implemented.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] (1) The present invention establishes a mapping method for converting the unique identification of telemetry data by an application process identifier into the unique identification of telemetry pool data, which helps to simplify the ground processing process; the ground customizes and designs the data content of the on-demand telemetry packet according to requirements, the telecommand packet is generated accordingly, and at the same time, the on-demand telemetry packet parsing configuration table is also generated, which helps to liberate designers from the cumbersome work of manually parsing dynamically changing telemetry.

[0032] (2) The on-demand telemetry packet is organized in the CCSDS standard telemetry packet format, which is conducive to compatibility processing with the original design; the on-demand telemetry system organizes telemetry data as needed, expands the data range of the TT&C downlink, and provides a new data support for troubleshooting satellite on-orbit faults afterwards. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] By reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, other features, objects, and advantages of the present invention will become more apparent:

[0034] Figure 1 It is a schematic diagram of a satellite on-orbit telemetry data on-demand system design method. DETAILED DESCRIPTION OF THE INVENTION

[0035] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those of ordinary skill in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0036] Embodiment

[0037] Referring to Figure 1 as shown, the present invention provides a satellite on-orbit telemetry data on-demand system design method, including the following steps:

[0038] Step 1: In the original telemetry scheduling table of the satellite integrated electronic software, add a column for on-demand telemetry packets, and reload the satellite telemetry packet scheduling table;

[0039] In the embodiment of the present invention, in a satellite platform with existing telemetry scheduling for downlink organized by an integrated electronic subsystem, a dynamic scheduling method combining a telemetry scheduling table, a telemetry packet information table, and a telemetry pool index table is adopted. When developing the integrated electronic software, according to requirements, all the telemetry that needs to be downlinked by the satellite is pre-configured, and the telemetry packets are organized in the CCSDS standard packet format. All the downlinked telemetry data is fixed.

[0040] In the original telemetry scheduling table of the satellite integrated electronic software of the present invention, a column for on-demand telemetry packets is added, the satellite telemetry packet scheduling table is reloaded, and the telemetry scheduling table with the added on-demand telemetry packets is reloaded into the integrated electronic software. The on-demand telemetry packets will participate in the satellite telemetry scheduling together with other preset telemetry packets in the scheduling table.

[0041] Step 2: Construct a mapping relationship table between the data domain content of the on-demand telemetry packet and the telemetry pool;

[0042] In the embodiment of the present invention, a mapping relationship table between the data domain content of the on-demand telemetry packet and the telemetry pool is constructed. The data content of the on-demand telemetry packet is composed of each single byte, and each composed byte is uniquely identified by the satellite telemetry data application process identifier and the channel number.

[0043] The telemetry pool data of the integrated electronic software is composed of the splicing and storage of each satellite telemetry data. The single-byte data of the telemetry pool is externally applied and is uniquely identified by the message source index number and the source internal offset. Construct a mapping relationship table between the data content of the data domain of the on-demand telemetry packet and the telemetry pool, that is, convert the satellite application process identifier and the channel number into the message source index number and the source internal offset of the telemetry pool data. Match the satellite telemetry data application process identifier with the telemetry source table of the telemetry pool. The row number where the telemetry data in the telemetry source table is located is the message index number of the telemetry pool data, and the channel number is equivalent to the source internal offset.

[0044] The acquisition of the telemetry packet data depends on the telemetry pool data index table. The values to be filled in the data domain of the telemetry packet are expanded in the telemetry pool index table according to the telemetry source number and the channel number to map the telemetry data in the telemetry pool.

[0045] The integrated electronic software telemetry data on-demand system receives the uplink on-demand setting remote control injection count, and converts the on-demand content of the data domain of the on-demand telemetry packet into the method of the telemetry pool data, so as to complete the construction of the mapping relationship table between the data domain content of the on-demand telemetry packet and the telemetry pool.

[0046] Step 3: The on-demand system receives the uplink remote control command and sets the real-time downlink period of the on-demand telemetry. The downlink period of the on-demand telemetry packet will be based on this setting.

[0047] In an embodiment of the present invention, the integrated electronic software telemetry on-demand system receives an uplink remote control command and performs on-demand telemetry real-time downlink cycle setting. The downlink cycle of the on-demand telemetry packet will be based on this setting. The downlink cycle is counted in 0.5 s. Among them, the on-demand system runs in a 0.5 s cycle. The initial running count of the on-demand telemetry column in the telemetry packet scheduling table is 0. For each cycle that the on-demand system thread runs, the running cycle count of the on-demand telemetry column in the scheduling table is incremented by 1, and this running count is compared with the downlink cycle. When the running cycle count is greater than or equal to the downlink cycle count threshold, the on-demand telemetry system performs on-demand telemetry packet grouping and clears the running count to 0.

[0048] Step 4: The on-demand system receives an uplink remote control command and performs on-demand telemetry delay storage cycle setting. The platform small fixed storage module cycle of the on-demand telemetry packet is based on this setting.

[0049] In an embodiment of the present invention, the on-demand system receives an uplink remote control command and performs on-demand telemetry delay storage cycle setting. The platform small fixed storage module cycle of the on-demand telemetry packet is based on this setting. The storage cycle is counted in 0.5 s. The on-demand system runs in a 0.5 s cycle. The initial storage count of the on-demand telemetry column in the telemetry packet scheduling table is 0. For each cycle that the on-demand system thread runs, the storage cycle count of the on-demand telemetry column in the scheduling table is incremented by 1, and this storage count is compared with the storage cycle threshold count. When the storage cycle count is greater than or equal to the storage cycle count threshold, the on-demand telemetry packet storage will be stored in the platform small fixed storage module and the storage count is cleared to 0. When the satellite is flying overseas, the telemetry historical data mainly depends on the telemetry data stored in the platform small fixed storage module.

[0050] Step 5: According to the current on-orbit time obtained from the current on-demand duration value, calculate the on-orbit end time of the on-demand.

[0051] In an embodiment of the present invention, according to the current on-demand duration value, the current on-orbit time is obtained and the on-orbit end time of the on-demand is calculated. The on-demand system receives an uplink remote control command, obtains the current on-orbit time counted in 0.1 ms through the driver interface, converts the on-demand duration in the uplink remote control command into a count in 0.1 ms, adds this 0.1 ms count to the obtained current on-orbit time, and the calculated result is the on-orbit end time of the on-demand. The end time of the on-demand is an absolute time that covers the end time of the previous on-demand.

[0052] Step 6: Set the downlink permission of the on-demand telemetry packet in the telemetry scheduling table to be prohibited, and the on-demand system starts the on-demand telemetry downlink function.

[0053] In an embodiment of the present invention, the on-demand system receives an uplink remote control, identifies that the theme of this remote control is to set the downlink of the on-demand telemetry packet as the standard according to the obtained remote control packet function identifier, sets the on-demand telemetry packet column in the telemetry scheduling table with the downlink of the on-demand telemetry packet as the prohibited standard, and at the same time sets the on-demand telemetry function as the standard. The on-demand system automatically starts running the on-demand telemetry downlink function.

[0054] Step 7: The on-demand telemetry packet obtains data from the telemetry pool according to the mapping relationship of the telemetry pool data index table, and fills the real-time packet into the real-time mode downlink telemetry frame.

[0055] In an embodiment of the present invention, the on-demand telemetry packet obtains data from the telemetry pool byte by byte according to the mapping relationship of the telemetry pool data index table, with the data field length of the on-demand telemetry packet as the upper limit of the loop body control. It marks the agreed-on application process identifier for the on-demand telemetry packet, fills in the packet sequence count, fills in the length of the on-demand telemetry packet, and fills the real-time packet into the real-time mode downlink telemetry frame to complete the downlink of the on-demand telemetry packet group.

[0056] Step 8: According to the content of the on-demand data this time, the ground configures the on-demand telemetry packet parsing table, receives the on-demand telemetry packet in real time, and performs on-demand data parsing processing and monitoring.

[0057] In an embodiment of the present invention, according to the content of the on-demand data this time, the ground configures the on-demand telemetry packet parsing table. The on-demand telemetry packet parsing configuration table can be processed by bits, multi-bits, single bytes, double bytes, four bytes, six bytes, and eight bytes. The ground receives the on-demand telemetry packet in real time and performs on-demand data parsing processing and monitoring.

[0058] Step 9: When the on-board time reaches the end time of this on-demand, the on-demand system independently closes the telemetry on-demand function and ends this telemetry on-demand.

[0059] In an embodiment of the present invention, during the periodic operation of the on-demand system, at the beginning of each cycle operation, it calls the on-board time acquisition interface to obtain the current on-board time, compares the obtained on-board time with the on-demand end time. If it is judged that the current on-board time is greater than or equal to the on-demand end time, the on-demand system sets the downlink of the on-demand telemetry packet in the telemetry scheduling table as prohibited, sets the on-demand telemetry function as prohibited, and at the same time clears the mapping relationship table between the content of the on-demand telemetry packet data field and the telemetry pool, and independently closes the telemetry on-demand function to end this telemetry on-demand.

[0060] Those skilled in the art know that, in addition to implementing the systems, devices and their respective modules provided by the present invention in the form of pure computer-readable program code, the method steps can be logically programmed to enable the systems, devices and their respective modules provided by the present invention to be implemented in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, embedded microcontrollers, etc. to achieve the same program. Therefore, the systems, devices and their respective modules provided by the present invention can be regarded as a kind of hardware component, and the modules included therein for implementing various programs can also be regarded as the structures within the hardware component; the modules for implementing various functions can also be regarded as either software programs for implementing the method or the structures within the hardware component.

[0061] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A design method for a satellite on-orbit telemetry data on-demand system, characterized in that It includes the following steps: Step S1: In the original telemetry scheduling table of the satellite integrated electronic software, add a column for on-demand telemetry packets, and reload the satellite telemetry packet scheduling table; Step S2: Construct a mapping relationship table between the data domain content of the on-demand telemetry packet and the telemetry pool; Step S3: The telemetry on-demand system of the integrated electronic software receives an uplink remote control command, sets the real-time downlink period for on-demand telemetry, and the downlink period of the on-demand telemetry packet will be based on this setting; Step S4: The telemetry on-demand system of the integrated electronic software receives an uplink remote control command, sets the storage period with delay for on-demand telemetry, and the period of the platform small fixed storage module for the on-demand telemetry packet is based on this setting; Step S5: According to the on-demand duration value of this time, obtain the current on-board time, and calculate the on-board moment when the on-demand ends; Step S6: Set the downlink permission of the on-demand telemetry packet in the telemetry scheduling table to be prohibited, and the on-demand system starts the on-demand telemetry downlink function; Step S7: The on-demand telemetry packet obtains data from the telemetry pool according to the mapping relationship of the telemetry pool data index table, and fills the real-time packet into the real-time mode downlink telemetry frame; Step S8: According to the on-demand data content of this time, configure the on-demand telemetry packet parsing table on the ground, receive the on-demand telemetry packet in real time, and perform on-demand data parsing processing and monitoring; Step S9: When the on-board time reaches the on-demand end moment of this time, the telemetry on-demand system of the integrated electronic software autonomously closes the telemetry on-demand function and ends this telemetry on-demand.

2. The design method of the satellite on-orbit telemetry data on-demand system according to claim 1, characterized in that, In the said step S1, the original telemetry scheduling table of the integrated electronic software is a scheduling table with pre-determined scheduling strategies and packet assembly contents. Add a whiteboard on-demand telemetry packet scheduling column, and reload the telemetry scheduling table with the on-demand telemetry packet added into the integrated electronic software. The on-demand telemetry packet will participate in the satellite telemetry scheduling together with other preset telemetry packets in the scheduling table.

3. The design method of the satellite on-orbit telemetry data on-demand system according to claim 1, wherein The said step S2 includes the following steps: Step S21: The data content of the on-demand telemetry packet consists of each single byte, and each constituent byte is determined by the satellite telemetry data application process identifier and the channel number; Step S22: The telemetry pool data of the integrated electronic software is composed of the splicing storage of each satellite telemetry data. The single-byte data of the telemetry pool is externally applied and represented by the message source index number and the source internal offset; Step S23: Construct a mapping relationship table between the data content of the data domain of the on-demand telemetry packet and the telemetry pool, and convert the satellite application process identifier and the channel number into the message source index number and the source internal offset of the telemetry pool data; Step S24: Match the satellite telemetry data application process identifier with the telemetry source table of the telemetry pool. The row number of the telemetry data in the telemetry source table is the message index number of the telemetry pool data, and the channel number is equivalent to the source internal offset; Step S25: The telemetry data on-demand system of the integrated electronic software receives the uplink on-demand setting remote control note number, and performs the conversion of the on-demand content of the data domain of the on-demand telemetry packet to the method of the telemetry pool data, so as to complete the construction of the mapping relationship table between the data domain content of the on-demand telemetry packet and the telemetry pool.

4. The design method of the satellite on-orbit telemetry data on-demand system according to claim 1, characterized in that In the said step S3, the downlink period is counted in 0.5s. The telemetry on-demand system of the integrated electronic software runs in a 0.5s cycle. When the running cycle reaches the downlink period, the on-demand telemetry is downlinked.

5. The design method of the satellite on-orbit telemetry data on-demand system according to claim 1, wherein In the step S4, the storage period is counted in 0.5s, and the integrated electronic software telemetry on-demand system runs in a 0.5s cycle. When the operation cycle reaches the storage period, the on-demand telemetry is stored in the platform small solid-state memory module. When the satellite is flying overseas, the telemetry historical data depends on the telemetry data stored in the platform small solid-state memory module.

6. The design method of the satellite on-orbit telemetry data on-demand system according to claim 1, characterized in that, In the step S5, the integrated electronic software telemetry on-demand system receives the uplink remote control command, obtains the on-board time counted in 0.1ms through the drive interface, converts the on-demand duration in the uplink remote control command into 0.1ms count, adds the 0.1ms count to the obtained current on-board time, and the calculated result is the on-board end time of the on-demand.

7. The design method of the satellite on-orbit telemetry data on-demand system according to claim 1, characterized in that In the step S7, the agreed on-demand telemetry packet application process identifier is marked, the packet sequence count is filled, the on-demand telemetry packet length is filled, and it is packetized in real time and filled into the real-time mode downlink telemetry frame to complete the downlink of the on-demand telemetry packet after packetization.

8. A design method for a satellite on-orbit telemetry data on-demand system according to claim 1, characterized in that, In the step S9, during the periodic operation of the integrated electronic software telemetry on-demand system, the current on-board time is obtained periodically. In each cycle, the obtained on-board time is compared with the on-demand end time. When the on-board time is greater than or equal to the on-demand end time of this time, the on-demand system sets the on-demand telemetry packet downlink quasi-ban in the telemetry scheduling table to prohibited, clears the mapping relationship table between the content of the on-demand telemetry packet data field and the telemetry pool, and autonomously closes the on-demand telemetry function to end the current telemetry on-demand.

9. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the satellite on-orbit telemetry data on-demand system design method described in any one of claims 1 to 8.

10. An electronic device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the computer program is executed by the processor, it implements the steps of the satellite on-orbit telemetry data on-demand system design method described in any one of claims 1 to 8.

Images