Satellite system and satellite

Abstract

The invention provides a satellite system and a satellite, and is applied to the technical field of spaceflight, the satellite system comprises a satellite service subsystem and an application subsystem, and the application processing subsystem is used for executing a satellite task corresponding to the satellite system; the satellite service subsystem is used for executing an autonomous operation task of the satellite system; and the satellite service subsystem and the satellite application processing subsystem interact with each other through a CAN (Controller Area Network) data interface. The satellite system can realize multiple functions, meets the requirement of multiple functions, and can be flexibly applied to multiple loads.

Description

Technical Field

[0001] The present application relates to the fields of aerospace technology and satellite technology, and in particular to a satellite system and a satellite. Background Art

[0002] In the field of satellite technology, satellites can provide information services, etc. For example, remote sensing satellites need to pass through or transmit data to ground stations through relay satellites. Another example is that navigation satellites can provide navigation data. However, the functions provided by current satellites are limited.

[0003] Therefore, there is an urgent need for a satellite system that can meet multi-functional requirements. Summary of the invention

[0004] The present application provides a satellite system and a satellite, which are used to solve the technical problem that satellites in the prior art cannot meet multi-functional requirements.

[0005] In a first aspect, the present application provides a satellite system, a satellite service subsystem and an application processing subsystem; the satellite service subsystem and the application processing subsystem are connected to each other by a controller area network CAN (serial communication protocol, Control Area Network) data interface;

[0006] The application processing subsystem is used to execute the satellite mission corresponding to the satellite system;

[0007] The satellite service subsystem is used to perform the autonomous operation tasks of the satellite system.

[0008] In a possible implementation, the application processing subsystem includes: a backplane, a power board, a storage board, a main control board, and at least one intelligent processing board; wherein the power board, the storage board, the main control board, and the at least one intelligent processing board are respectively connected to the backplane;

[0009] The at least one intelligent processing board is used to execute application tasks of satellite applications of the satellite corresponding to the satellite system.

[0010] In a possible implementation, the application processing subsystem is used to receive the data to be transmitted and send the data to be transmitted to other terminals;

[0011] The data to be transmitted includes one or more of the following data: inter-satellite data, satellite-to-ground data, and navigation enhancement data; wherein the inter-satellite data is data between satellites, the satellite-to-ground data is data between satellites and other terminals on the ground, and the navigation enhancement data is data used to provide navigation services.

[0012] In a possible implementation, the application processing subsystem is used to acquire and store the data to be processed, and transmit the data to other terminals or satellites after performing data processing on the data to be processed;

[0013] The data to be processed includes one or more of the following data: remote sensing data, communication data, and Internet of Things data.

[0014] In a possible implementation, the application processing subsystem is used to execute an autonomous mission planning task; wherein the autonomous mission planning task represents a planning task of a ground operation and control system function.

[0015] In a possible implementation, the application processing subsystem is also used to process application software; the processing work includes one or more of the following: downloading of application software, installation of application software, and updating of application software.

[0016] In one possible implementation, the satellite service subsystem includes: a satellite service computer, attitude control software, temperature control software, payload management software, energy management software and communication software; wherein the payload management software interacts with the payload, the energy management software interacts with the power supply, and the communication software interacts with the ground measurement and control communication center for satellite-to-ground interaction.

[0017] In a possible implementation, the satellite service subsystem is used for autonomous operation of the satellite's internal system, platform control, fault handling and abnormal warning functions.

[0018] In a possible implementation, the satellite system further includes a satellite payload, wherein if the satellite payload is a remote sensing payload, a remote sensing high-speed single-way data interface connected to the remote sensing payload adopts a CXP (CoaXPress) interface;

[0019] If the satellite payload is not a remote sensing payload, the payload service data interface connected to the remote sensing payload adopts a 1 Gbps data bus interface.

[0020] According to a second aspect, a satellite is provided, wherein the satellite comprises the satellite system provided by the first aspect or any implementation manner of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a satellite system provided in an embodiment of the present application;

[0022] Figure 2 A schematic diagram of the structure of a satellite service subsystem provided in an embodiment of the present application;

[0023] Figure 3 A schematic diagram of the structure of an application processing subsystem provided in an embodiment of the present application;

[0024] Figure 4 An external data flow diagram of an application processing system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] In related technologies, satellites are single-system processing forms, which is also the basic form of satellites. With the growing demand for satellite automation, applications, and intelligence, the functional positioning of the satellite service subsystem can no longer meet the needs. For example, the form of the advanced satellite proposed in this article has increased multi-type payloads and application processing functions, and the current satellite processing architecture is no longer suitable. There are three reasons for this. First, if the satellite service subsystem functions are simply increased, the amount of data processed by the satellite service subsystem will be too large, and the satellite service subsystem will be overwhelmed. Second, it is not conducive to the decoupling of the satellite platform and the satellite payload. Third, it is not conducive to the modularization and batch development of satellites.

[0027] In order to solve the technical problems in the related technology, the embodiment of the present application provides a satellite system, the satellite system includes a satellite service subsystem and an application processing subsystem, the satellite service subsystem includes attitude control software, temperature control software, payload management software, and energy management software; wherein the payload management software interacts with the payload, the energy management software interacts with the power supply, and the communication software interacts with the ground measurement and control communication center for satellite-to-ground interaction; the satellite service subsystem is used for the functions of autonomous operation of the satellite system, platform control, fault handling, and abnormal warning. The application processing subsystem includes a backplane, a power board, an intelligent processing board, a storage board, and a main control board, wherein the backplane is respectively connected to the power board, at least one intelligent processing board, a storage board, and a main control board; the application processing subsystem is used for data processing and data storage, and has autonomous mission planning functions, payload planning management, and supports on-orbit application software updates and application definition functions. According to the above functional description, the application processing subsystem is responsible for satellite application functions, and the functions can be accumulated. The satellite service subsystem is used for internal autonomy and information transmission with the ground, and the two interact through the CAN (Control Area Network) data interface. Therefore, the satellite system in this technical solution adopts a dual-hub architecture, which can adapt to the processing of general high-performance satellite data of multi-source payloads and meet the multi-functional requirements of the satellite.

[0028] The technical solution shown in this application is described in detail below through specific embodiments.

[0029] Figure 1 This is a schematic diagram of the structure of a satellite system provided in an embodiment of the present application. Figure 1 The satellite system includes an application processing subsystem 11 and a satellite service processing subsystem 12. The application processing subsystem 11 and the satellite service subsystem 12 are connected in communication via a CAN data interface.

[0030] The application processing subsystem is used for satellite missions corresponding to the satellite system.

[0031] The satellite service subsystem is used to perform autonomous operation tasks of the satellite system.

[0032] Exemplarily, a satellite system consisting of an application processing subsystem 11 and a satellite affairs processing subsystem 12 is provided.

[0033] The application processing subsystem 11 and the satellite service processing subsystem 12 are connected via a CAN data interface. Optionally, the application processing subsystem 11 and the satellite service subsystem 12 are connected via RS422.

[0034] The application processing subsystem 11 communicates with multiple types of loads in the form of a high-speed bus, obtains and processes data, and can transmit, receive, and process business data to provide real-time information and communication application services. Figure 4 shown.

[0035] The satellite service subsystem 12 exchanges status data with each single machine and multi-type payload of the satellite platform through a low-speed bus to provide the necessary environment for the payload operation. The satellite service processing subsystem interacts with the ground measurement, control and communication center 13 to transmit the processed data to the ground measurement, control and communication center 13. The data includes satellite status data and / or inter-satellite acquisition data. At the same time, it is also responsible for processing the work instructions sent to the satellite by the ground measurement, control and communication center 13.

[0036] Among them, the various types of payloads include: optical payloads, satellite-to-ground payloads, communication payloads, other payloads, and so on.

[0037] The application processing subsystem 11 can also be connected to a single data transmission machine and intersatellite microwave.

[0038] The application processing subsystem 11 and the satellite service subsystem 12 are connected via a CAN data interface, and the transmission rate of the CAN data interface is 500 kbps (kilobits per second).

[0039] Next, the working process of the above satellite system is explained.

[0040] The satellite service subsystem 12 is used for autonomous operation of the satellite's internal system, platform control, fault handling and abnormal warning functions.

[0041] Exemplarily, the satellite service subsystem 12 is responsible for the internal management of the satellite platform, which can be called internal autonomy. The satellite service subsystem 12 does not involve satellite application functions, and is responsible for the autonomous operation of the satellite internal system, platform control functions, fault handling and abnormal warning. The application processing subsystem 11 is responsible for satellite application processing and payload planning management, which can be called external services. The application processing system 11 is responsible for satellite application functions, including the output of satellite service capabilities, forming a closed loop with ground or intersatellite functions, and satellite application mission planning functions. The application processing subsystem 11 obtains the status data of each payload through the CAN bus between the satellite service subsystems 12C and completes data processing; the application processing subsystem 11 has a routing function, which can receive intersatellite data, satellite-to-ground data, and augmented data and send them to the required single machine or ground station or terminal, and can also realize remote sensing data processing functions including image compression, image matching, target detection and recognition.

[0042] Among them, Figure 4 As shown, the application processing subsystem 11 is connected to the satellite service subsystem 12 via a CAN data interface. Some devices are connected via a CXP (CoaXPress) interface, for example, the optical payload is connected to the application processing subsystem 11 via a CXP (CoaXPress) interface. Some devices are connected via a high-speed network port, for example, the data transmission stand-alone machine is connected to the application processing subsystem 11 via a high-speed network port.

[0043] Therefore, the satellite system can realize multiple functions, meet multi-functional needs, and can flexibly adapt to a variety of payloads.

[0044] exist Figure 1 Based on the embodiment shown, the following Figure 2 , the structure and function of the above-mentioned satellite service subsystem 12 are described in detail.

[0045] Figure 2 For a schematic diagram of the structure of a satellite service subsystem provided in the embodiment of the present application, please refer to Figure 2 , including a satellite service computer 21 and satellite service software. The satellite service computer 21 is a hardware platform. The satellite service software can realize the functions of each processing system. The satellite service software includes attitude control software 22, energy management software 23, payload management software 24, and temperature control software 25.

[0046] The attitude control center 22 is responsible for data processing of attitude sensors and attitude actuators; the energy management center 23 is connected to the power supply and is responsible for energy management; the payload management center 24 interacts with each payload, and the temperature control center is connected to the temperature sensor and heater and is responsible for temperature control; at the same time, the satellite service subsystem can realize the communication function and achieve satellite-ground interaction with the ground measurement and control communication center.

[0047] Optionally, the attitude control center 22 is used to receive information from the attitude sensor for analysis and send an attitude adjustment instruction to the attitude actuator. For example, when the satellite attitude deviates from the preset attitude, the attitude sensor detects the deviation information and sends it to the attitude control center 22. After the attitude control center 22 analyzes the deviation information, it sends an attitude adjustment instruction to the attitude actuator to adjust the satellite attitude.

[0048] Optionally, the load management center 24 receives load information. For example, when the load management center 24 receives a load task indication, it may directly process or forward the task to the application processing subsystem 11 .

[0049] Optionally, the temperature control center 25 receives information from the temperature sensor and instructs the operation of the heater. For example, when the temperature sensor detects that the surface temperature of the satellite is too low, the temperature information is transmitted to the temperature control center 25, and the temperature control center 25 instructs whether the heater needs to work.

[0050] The satellite service subsystem 12 is the basic form of all satellite processing systems. This technical solution separates part of the functions that originally require the satellite service subsystem to work to the application processing subsystem 11, reducing the operating burden of the original satellite service subsystem, and is more conducive to the decoupling of the satellite platform and satellite payload, and is conducive to the modularization and mass development of satellites.

[0051] Based on any of the above embodiments, Figure 3 , the structure of the satellite system in the above embodiment is further explained.

[0052] Figure 3 This is a schematic diagram of the structure of the application processing subsystem 11 provided in the embodiment of the present application. Figure 3 , including a backplane 31, a power board 32, at least one intelligent processing board 1~N (N is a natural number greater than 1), a storage board 33, and a main control board 34, wherein the power board 32, the storage board 33, the main control board 34, and at least one intelligent processing board are respectively connected to the backplane 31.

[0053] At least one intelligent processing board is used to execute application tasks of satellite applications of a satellite corresponding to the satellite system.

[0054] For example, in the application processing subsystem 11 provided, the power board 32 is connected to the power supply and the backboard 31 respectively, the power supply can charge the power board once, the intelligent processing boards 1 to N are connected to the backboard and are responsible for processing various data, the storage board 33 is connected to the backboard 31, and the main control board 34 is connected to the backboard 31. Figure 3 As shown, the intelligent processing boards 1 to N include intelligent processing board 1, intelligent processing board 2, ..., intelligent processing board N. N is a positive integer greater than or equal to 1.

[0055] Optionally, the power board 32 can be powered by a power source and has a power storage function, and then supplies power to various components through the backboard 31. The power supply of the power board 32 and the backboard 31 is 12V.

[0056] Optionally, the intelligent processing boards 1 to N are connected to the backboard 31 respectively, and the intelligent boards 1 to N are connected in parallel with each other without interfering with each other, and different data processing functions can be realized; for example, the intelligent board 1 processes communication data, the intelligent board 2 processes remote sensing data, and the intelligent board 3 processes navigation data. The functions that can be realized according to different needs can be superimposed in sequence; decoupling from the specific functional types of each load can be realized. The power supply of the intelligent boards 1 to N and the backboard 31 is 12V, which can realize low-speed data and / or high-speed data transmission.

[0057] Optionally, the storage board 33 can temporarily store the communication data, remote sensing data, and navigation data, waiting for being sent or forwarded. The power supply of the storage board 33 and the backboard 31 is 12V, which can realize low-speed data and / or high-speed data transmission.

[0058] Optionally, the main control board 34 interacts with the satellite service subsystem 12 via the CAN bus and obtains single-machine telemetry. The power supply of the main control board 34 and the backplane 31 is 12V, which can realize low-speed data and / or high-speed data transmission.

[0059] Optionally, the application processing subsystem 11 is connected to the satellite service subsystem 12 via RS422, and the task requirements are sent to the satellite service subsystem 12, and the satellite service subsystem 12 performs related operations.

[0060] Next, Figure 3 The functions that can be achieved by the application processing subsystem shown are explained.

[0061] In one example, the application processing subsystem 11 is used to receive data to be transmitted and send the data to be transmitted to other terminals.

[0062] The data to be transmitted includes one or more of the following data: inter-satellite data, satellite-to-ground data, and navigation enhancement data; inter-satellite data refers to data between satellites, satellite-to-ground data refers to data between satellites and other terminals on the ground, and navigation enhancement data refers to data used to provide navigation services.

[0063] In one example, the application processing subsystem 11 is used to obtain and store the data to be processed, and transmit the data to other terminals or satellites after processing the data to be processed. The data to be processed includes one or more of the following data: remote sensing data, communication data, and Internet of Things data.

[0064] Exemplarily, the application processing subsystem 11 can realize the routing function, and the application processing subsystem 11 can obtain the data to be transmitted (for example, the application processing subsystem 11 obtains the data to be transmitted from the satellite service subsystem 12), and the data to be transmitted includes, for example, inter-satellite data, satellite-to-ground data, navigation enhancement data, etc. Then, the application processing subsystem 11 sends the inter-satellite data, satellite-to-ground data, and navigation enhancement data to the required single machine or ground station or terminal; further, the data processing function can be realized, and the remote sensing data processing functions such as image compression, image matching, target detection and recognition can be provided; the communication data processing and Internet of Things data processing functions can be provided.

[0065] In addition, the application processing subsystem 11 can also obtain the data to be processed (for example, the application processing subsystem 11 obtains the data to be processed from the satellite service subsystem 12); then, the application processing subsystem 11 processes the data to be processed and transmits it to other terminals or satellites. In addition, the data storage function can be realized: communication data, remote sensing data, and navigation data can be temporarily stored and wait for distribution or forwarding.

[0066] Thus, the application processing subsystem 11 can store various types of data, and the application processing subsystem 11 can complete data processing tasks for various types of data. The application processing subsystem 11 provides powerful data processing functions and realizes the function of large-capacity data storage. In addition, the application processing subsystem 11 can provide routing functions, and then the application processing subsystem 11 can provide routing functions for the other two devices. For example, the application processing subsystem 11 provides routing functions between the data transmission unit and the satellite-to-ground payload.

[0067] Furthermore, the application processing subsystem 11 is used to execute the autonomous mission planning task; wherein the autonomous mission planning task represents the planning task of the ground operation and control system function.

[0068] Exemplarily, the application processing subsystem 11 can realize the task planning and generation functions: partially replace the ground operation and control system functions, and have the autonomous task planning function; it can support autonomous task planning tasks, and complete a planned task for multiple satellites to work together, or the satellite completes its own planned task. Planning tasks: for example, the task of observing targets (starry sky targets, ground targets), communication services (ground, aircraft).

[0069] Therefore, various types of planned tasks can be completed based on the application processing subsystem 11, and the application processing subsystem 11 provides a powerful task planning function.

[0070] Furthermore, the application processing subsystem 11 is also used to process the application software, including one or more of the following: downloading the application software, installing the application software, and updating the application software.

[0071] Exemplarily, the application processing subsystem 11 may support on-orbit application software updates, support software-defined applications, support software downloads, support software installations, and so on.

[0072] The types of software include, but are not limited to, attitude control software, temperature control software, payload management software, energy management software, communication software, data processing software, and the like.

[0073] Furthermore, the satellite system also includes a satellite payload.

[0074] Among them, if the satellite payload is a remote sensing payload, the remote sensing high-speed single-item data interface connected to the remote sensing payload adopts the CXP (CoaXPress) interface.

[0075] If the satellite payload is not a remote sensing payload, the payload service data interface connected to the remote sensing payload adopts a 1 Gbps data bus interface.

[0076] For example, the remote sensing high-speed unidirectional data interface uses the CXP (CoaXPress) interface, with a data rate of more than 3Gbps, and the other load service data interfaces use a 1Gbps data bus interface, with an optional high-speed network port. Technical indicator requirements: The storage capacity of the storage board is ≥4TB, the computing power is ≥60TPOS, and the power consumption is less than 30W.

[0077] Based on any one of the above embodiments, an embodiment of the present application further provides a satellite, wherein the satellite includes the satellite system shown in any one of the above embodiments.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A satellite system, characterized in that: include: Satellite service subsystem and application processing subsystem; The satellite service subsystem and the application processing subsystem are connected to each other through a controller area network (CAN) (serial communication protocol, Controller Area Network) data interface; The application processing subsystem is used to execute the satellite mission corresponding to the satellite system; The satellite service subsystem is used to perform the autonomous operation tasks of the satellite system.

2. The satellite system according to claim 1, characterized in that: The application processing subsystem includes: a backplane, a power board, a storage board, a main control board, and at least one intelligent processing board; wherein the power board, the storage board, the main control board, and the at least one intelligent processing board are respectively connected to the backplane; The at least one intelligent processing board is used to execute application tasks of satellite applications of the satellite corresponding to the satellite system.

3. The satellite system according to claim 1, characterized in that: The application processing subsystem is used to receive the data to be transmitted and send the data to be transmitted to other terminals; The data to be transmitted includes one or more of the following data: inter-satellite data, satellite-to-ground data, and navigation enhancement data; wherein the inter-satellite data is data between satellites, the satellite-to-ground data is data between satellites and other terminals on the ground, and the navigation enhancement data is data used to provide navigation services.

4. The satellite system according to claim 1, characterized in that: The application processing subsystem is used to acquire and store the data to be processed, and transmit the data to other terminals or satellites after performing data processing on the data to be processed; The data to be processed includes one or more of the following data: remote sensing data, communication data, and Internet of Things data.

5. The satellite system according to claim 1, characterized in that: The application processing subsystem is used to execute autonomous mission planning tasks; wherein the autonomous mission planning tasks represent the planning tasks of the ground operation and control system functions.

6. The satellite system according to claim 1, characterized in that: The application processing subsystem is also used to process application software; the processing work includes one or more of the following: downloading of application software, installation of application software, and updating of application software.

7. The satellite system according to claim 1, characterized in that: The satellite service subsystem includes: a satellite service computer, attitude control software, temperature control software, payload management software, energy management software and communication software; wherein the payload management software interacts with the payload, the energy management software interacts with the power supply, and the communication software interacts with the ground measurement and control communication center for satellite-to-ground interaction.

8. The satellite system according to claim 7, characterized in that: The satellite service subsystem is used for autonomous operation of the satellite's internal system, platform control, fault handling and abnormal warning functions.

9. The satellite system according to any one of claims 1 to 8, characterized in that: The satellite system also includes a satellite payload, wherein: If the satellite payload is a remote sensing payload, the remote sensing high-speed single-item data interface connected to the remote sensing payload adopts a CXP (CoaXPress) interface; If the satellite payload is not a remote sensing payload, the payload service data interface connected to the remote sensing payload adopts a 1 Gbps data bus interface.

10. A satellite, characterized in that: The satellite comprises a satellite system as claimed in any one of claims 1-9.

Images