Satellite systems and satellites

Abstract

The present application provides a satellite system and a satellite, which are applied to the field of aerospace technology. The satellite system includes: a first receiving antenna, a first transmitting antenna, a second transmitting antenna, a radio frequency switch and a processor, wherein the processor is connected to the first receiving antenna and the radio frequency switch respectively, and the radio frequency switch is also connected to the first transmitting antenna and the second transmitting antenna; the processor is used to obtain a request message received by the first receiving antenna, determine a control instruction according to the request message, and control the radio frequency switch to be selected with the first transmitting antenna or to be selected with the second transmitting antenna according to the control instruction. Reduce the cost of the satellite system.

Description

Technical Field

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

[0002] When a satellite is in orbit, it can communicate with the ground station. For example, the ground station sends control instructions to the satellite, and the satellite sends satellite status data and data collected by the satellite to the ground station.

[0003] At present, the satellite is equipped with a measurement and control subsystem and a data transmission subsystem. The satellite receives control instructions from the ground station through the measurement and control subsystem and sends satellite status data to the ground station. The satellite sends the data collected by the satellite (such as image data) to the ground station through the data transmission subsystem. However, in the above method, the satellite status data and the data collected by the satellite need to be sent through two independent systems, so that the corresponding hardware equipment needs to be configured for the two systems respectively when designing the satellite, which leads to a high cost of satellite manufacturing. Summary of the invention

[0004] The present application provides a satellite system and a satellite, which are used to solve the technical problem of high cost of satellite manufacturing in the prior art.

[0005] In a first aspect, the present application provides a satellite system, the satellite system comprising: a first receiving antenna, a first transmitting antenna, a second transmitting antenna, a radio frequency switch and a processor, wherein:

[0006] The processor is connected to the first receiving antenna and the radio frequency switch respectively, and the radio frequency switch is also connected to the first transmitting antenna and the second transmitting antenna;

[0007] The processor is used to obtain a request message received by the first receiving antenna, determine a control instruction according to the request message, and control the RF switch to be selected with the first transmitting antenna or control the RF switch to be selected with the second transmitting antenna according to the control instruction.

[0008] In a possible implementation, the processor includes a radio frequency board, a baseband board, and a satellite service processor, wherein:

[0009] The radio frequency board is respectively connected to the first receiving antenna, the radio frequency switch and the baseband board;

[0010] The baseband board is also connected to the satellite service processor.

[0011] In a possible implementation manner, the radio frequency board is used to perform radio frequency processing on the request message and send the radio frequency processed signal to the baseband board;

[0012] The baseband board is used to digitally process the signal after the RF processing to obtain a digital signal, and send the digital signal to the satellite service processor;

[0013] The satellite service processor is used to determine the control instruction according to the digital signal, and control the radio frequency switch to be selected with the first transmitting antenna, or control the radio frequency switch to be selected with the second transmitting antenna according to the control instruction.

[0014] In a possible implementation manner, the satellite service processor is specifically used for:

[0015] Determine the control instruction according to the digital signal, the control instruction being a first control instruction or a second control instruction;

[0016] The control instruction is sent to the radio frequency switch to control the radio frequency switch to be connected to the first transmitting antenna, or to control the radio frequency switch to be connected to the second transmitting antenna.

[0017] In a possible implementation manner, if the digital signal is used to request to obtain status data of a satellite, the control instruction is the first control instruction;

[0018] If the digital signal is used to request to obtain multimedia data, the control instruction is the second control instruction;

[0019] If the digital signal is used to request to obtain the status data and the multimedia data, the control instruction is the second control instruction.

[0020] In a possible implementation manner, the radio frequency switch is specifically used for:

[0021] If the control instruction is the first control instruction, selecting the first transmitting antenna;

[0022] If the control instruction is the second control instruction, the second transmitting antenna is selected.

[0023] In a possible implementation manner, a transmission rate of the first transmitting antenna is lower than a transmission rate of the second transmitting antenna.

[0024] In a possible implementation manner, the satellite system further includes a filter, wherein:

[0025] The filter is respectively connected to the first receiving antenna, the radio frequency switch and the radio frequency board;

[0026] The filter is used to filter the request message and send the filtered signal to the radio frequency board.

[0027] In a possible implementation manner, the satellite system further includes a second receiving antenna, wherein the second receiving antenna is connected to the filter, wherein:

[0028] The first receiving antenna is a receiving antenna facing the ground;

[0029] The second receiving antenna is a receiving antenna facing away from the ground.

[0030] In a second aspect, the present application provides a satellite, comprising a satellite system as described in any one of the first aspects.

[0031] The present application provides a satellite system and a satellite, wherein the satellite system includes a first receiving antenna, a first transmitting antenna, a second transmitting antenna, a radio frequency switch and a processor, wherein the processor is connected to the first receiving antenna and the radio frequency switch, respectively, and the radio frequency switch is also connected to the first transmitting antenna and the second transmitting antenna, and the processor is used to obtain a request message received by the first receiving antenna, and determine a control instruction according to the request message, and control the radio frequency switch to be selected with the first transmitting antenna, or control the radio frequency switch to be selected with the second transmitting antenna according to the control instruction. In the above-mentioned satellite system, since the processor can control the selection of the radio frequency switch with different transmitting antennas, and thus send different satellite data, the satellite system can simultaneously send satellite status data and satellite collected data in one system, without setting up a corresponding control system for each type of data, thereby reducing the cost of satellite manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the structure of a satellite system provided in an embodiment of the present application;

[0033] Figure 2 A schematic diagram of the structure of a processor provided in an embodiment of the present application;

[0034] Figure 3 A schematic diagram of the structure of another satellite system provided in an embodiment of the present application.

[0035] Reference numerals:

[0036] 11: first receiving antenna;

[0037] 12: first transmitting antenna;

[0038] 13: second transmitting antenna;

[0039] 14: Processor;

[0040] 15: RF switch;

[0041] 21: RF board;

[0042] 22: Baseband board;

[0043] 23: Star service processor;

[0044] 31: second receiving antenna;

[0045] 32: filter;

[0046] 33: radio frequency receiving unit;

[0047] 34: RF transmitting unit;

[0048] 35: control chip;

[0049] 36: Interface circuit. DETAILED DESCRIPTION

[0050] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0051] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as according to the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0052] The terms "a", "an", "the" and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to indicate an open-ended inclusive meaning and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc. The terms "first" and "second" are used only as labels and are not intended to limit the quantity of their objects.

[0053] In the related art, a satellite can receive control instructions sent by a ground station and perform corresponding actions according to the control instructions. A satellite can send satellite status data and data collected by the satellite to the ground station. At present, a measurement and control subsystem and a data transmission subsystem can be set in a satellite. The satellite can receive control instructions from the ground station through the measurement and control subsystem and send satellite status data to the ground station. The satellite sends the data collected by the satellite to the ground station through the data transmission subsystem. For example, when a satellite sends data to a ground station, the satellite can send satellite status data such as the satellite's orbital altitude and internal temperature to the ground station through the measurement and control subsystem, and send ground electromagnetic waves and image data collected by the satellite to the ground station through the data transmission subsystem. However, when a satellite sends data to a ground station, it needs to send two types of data (satellite status data and satellite collection data) through two independent systems, so that when designing a satellite, it is necessary to configure corresponding hardware equipment for the two systems respectively, which leads to a high cost of satellite manufacturing.

[0054] In order to solve the technical problem of high cost of satellite manufacturing in related technologies, an embodiment of the present application provides a satellite system, which includes a first receiving antenna, a first transmitting antenna, a second transmitting antenna, a radio frequency switch and a processor, and the processor includes a radio frequency board, a baseband board and a satellite service processor, and the radio frequency board is respectively connected to the first receiving antenna, the radio frequency switch and the baseband board, and the baseband board is connected to the satellite service processor, and the radio frequency switch is also connected to the first transmitting antenna and the second transmitting antenna. In the above structure, the radio frequency board can perform radio frequency processing on the request message and send the radio frequency processed signal to the baseband board, the baseband board can perform digital processing on the radio frequency processed signal to obtain a digital signal, and send the digital signal to the satellite service processor, and the satellite service processor can determine the control instruction according to the digital signal, and control the radio frequency switch to be selected with the first transmitting antenna according to the control instruction, or control the radio frequency switch to be selected with the second transmitting antenna. In this way, since different satellite data can be sent when the radio frequency switch is selected with different transmitting antennas, the satellite system can simultaneously send satellite status data and satellite collected data in one system, without setting a corresponding control system for each type of data, thereby reducing the cost of satellite manufacturing.

[0055] The technical solution shown in the present application is described in detail below through specific embodiments. It should be noted that the following specific embodiments can be combined with each other, and the same or similar contents will not be repeatedly described in different embodiments.

[0056] Figure 1 A schematic diagram of the structure of a satellite system provided in an embodiment of the present application. Figure 1The satellite system includes a first receiving antenna 11, a first transmitting antenna 12, a second transmitting antenna 13, a radio frequency switch 15 and a processor 14. Optionally, the processor 14 is connected to the first receiving antenna 11 and the radio frequency switch 15 respectively, and the radio frequency switch 15 is also connected to the first transmitting antenna 12 and the second transmitting antenna 13.

[0057] Optionally, the satellite system in the embodiment of the present application can be applied to a rocker satellite. Among them, the rocker satellite is an artificial satellite that uses remote sensing technology and rocker equipment to observe surface areas and natural phenomena. For example, the rocker satellite can be a rocker cube satellite, which is a micro-nano satellite with a cube structure. The cube satellite can form a constellation through networking to observe surface areas and natural phenomena. For example, the rocker satellite can be used in technical fields such as environmental monitoring and protection, urban planning, crop yield estimation, disaster prevention and mitigation, and space science experiments.

[0058] Optionally, the satellite system is used to receive a request message sent by a ground station. For example, the ground station can send a control instruction to the satellite system to descend 100 meters, and the satellite system can control the satellite to descend 100 meters after receiving the control instruction. Optionally, the satellite system is used to send satellite status data to the ground station. For example, the satellite system can send satellite status data such as the position of the satellite, the temperature of the satellite, the spectrum of the satellite, the power supply of the satellite, etc. to the ground station so that the ground station can accurately obtain the satellite status. Optionally, the satellite system is used to send data acquired by the satellite to the ground station. For example, the satellite system can send the payload data of the satellite to the ground station. For example, the satellite system can send electromagnetic wave data of the ground area, image data of the ground area, etc. to the ground station.

[0059] The first receiving antenna 11 is used to receive a request message sent by a ground station. For example, the ground station can send a control instruction to the satellite, and the first receiving antenna can receive the control instruction sent by the ground station. The first transmitting antenna 12 can send a first type of satellite data to the ground station. The second transmitting antenna 13 can send a first type of satellite data and / or a second type of satellite data to the ground station. Optionally, the first type of satellite data can be satellite status data, and the second type of satellite data can be data collected by the satellite. For example, the satellite system can send satellite status data to the ground station through the first transmitting antenna 12, or the satellite system can send satellite status data to the ground station through the second transmitting antenna 13, or the satellite system can send satellite collected data to the ground station through the second transmitting antenna 13.

[0060] Optionally, the first receiving antenna 11 may be an X receiving antenna for receiving X-band signals, and the first transmitting antenna 12 and the second transmitting antenna 13 may be transmitting antennas for transmitting X-band signals.

[0061] Optionally, the transmission rate of the first transmitting antenna 12 is less than the transmission rate of the second transmitting antenna 13. For example, the first transmitting antenna may be an X low-speed data transmission transmitting antenna, and the second transmitting antenna may be an X high-speed data transmission transmitting antenna. For example, when a satellite system sends data to a ground station, the satellite is in orbit for a short time (generally only 10 minutes of data transmission time). Therefore, when the data to be sent is small, the satellite system may send the data through the first transmitting antenna, and when the data to be sent is large, the satellite system may send the data through the second transmitting antenna.

[0062] The RF switch 15 is used to control the first transmitting antenna 12 to be enabled or the second transmitting antenna 13 to be enabled. For example, when the RF switch controls the first transmitting antenna to be enabled, the satellite system can send data to the ground station through the first transmitting antenna, and when the RF switch controls the second transmitting antenna to be enabled, the satellite system can send data to the ground station through the second transmitting antenna. Optionally, when the RF switch 15 controls one transmitting antenna to be enabled, the other transmitting antenna is turned off. For example, when the RF switch controls the first transmitting antenna to be enabled, the second transmitting antenna is turned off, and when the RF switch controls the second transmitting antenna to be enabled, the first transmitting antenna is turned off.

[0063] The processor 14 is used to obtain the request message received by the first receiving antenna 11, determine the control instruction according to the request message, and control the RF switch 15 and the first transmitting antenna 12 to be switched on, or control the RF switch 15 and the second transmitting antenna 13 to be switched on, according to the control instruction. For example, after the first receiving antenna receives the request message sent by the ground station, the first receiving antenna can send the request message to the processor, and the processor can identify the request message, determine the control instruction corresponding to the request message, and then execute the control instruction.

[0064] In the present application, when the processor in the satellite system controls the RF switch and the first transmitting antenna to be selected, the satellite system can send satellite status data to the ground station through the first transmitting antenna. When the processor controls the RF switch and the second transmitting antenna to be selected, the satellite system can send satellite status data and / or data collected by the satellite to the ground station through the second transmitting antenna.

[0065] Next, the working process of the above satellite system is explained.

[0066] The satellite system obtains the request message sent by the ground station through the first receiving antenna, and sends the request message to the processor. When the processor receives the request message, it can decode the request message and determine the control instruction corresponding to the request message. When the control instruction is used to obtain satellite status data, the processor controls the RF switch to be selected with the first transmitting antenna or the second transmitting antenna, and sends the satellite status data to the ground station through the first transmitting antenna or the second transmitting antenna. When the control instruction is used to obtain data collected by the satellite, the processor controls the RF switch to be selected with the second transmitting antenna, and sends the data collected by the satellite to the ground station through the second transmitting antenna. When the control instruction is used to obtain satellite status data and data collected by the satellite, the processor controls the RF switch to be selected with the second transmitting antenna, and sends the satellite status data and data collected by the satellite to the ground station through the second transmitting antenna.

[0067] Optionally, in the present application, the processor 14 may be connected to the first receiving antenna 11 and the RF switch 15 respectively through high-frequency cables, and the RF switch 15 may be connected to the first transmitting antenna 12 and the second transmitting antenna 13 respectively through high-frequency cables.

[0068] The embodiment of the present application provides a satellite system, the satellite system includes a first receiving antenna, a first transmitting antenna, a second transmitting antenna, a radio frequency switch and a processor, wherein the processor is connected to the first receiving antenna and the radio frequency switch respectively, and the radio frequency switch is also connected to the first transmitting antenna and the second transmitting antenna. The processor can obtain the request message received by the first receiving antenna, and determine the control instruction according to the request message, and control the radio frequency switch to be selected with the first transmitting antenna according to the control instruction, or control the radio frequency switch to be selected with the second transmitting antenna. According to the above principle, when the request message obtained by the satellite system is to send data to the ground station, the satellite system can send satellite status data and / or satellite collected data to the ground station by switching the first transmitting antenna and the second transmitting antenna. Therefore, the satellite system can send satellite status data and satellite collected data in one system at the same time, without setting up a corresponding control system for each type of data, thereby reducing the cost of satellite manufacturing.

[0069] exist Figure 1 Based on the embodiment shown below, combined with Figure 2 , the structure of the above processor is described in detail.

[0070] Figure 2 A schematic diagram of the structure of a processor provided in an embodiment of the present application. Figure 2, including a first receiving antenna 11, a radio frequency switch 15 and a processor 14. Among them, the processor 14 includes a radio frequency board 21, a baseband board 22 and a satellite service processor 23 processor 14. The radio frequency board 21 is connected to the first receiving antenna 11, the radio frequency switch 15 and the baseband board 22 respectively, and the baseband board 22 is also connected to the satellite service processor 23 processor 14. Optionally, the radio frequency board 21 and the baseband board 22 are spliced ​​through the PC104 interface.

[0071] Optionally, the radio frequency board 21 is used to perform radio frequency processing on the request message and send the radio frequency processed signal to the baseband board 22. For example, after the radio frequency board receives the request message obtained by the first receiving antenna, the radio frequency board can perform signal amplification processing on the request message and send the amplified request message to the baseband board. For example, in actual application, the signal sent by the ground station to the satellite system is a down-frequency signal. After the radio frequency board receives the down-frequency signal obtained by the first receiving antenna, it can perform low-noise amplification, down-conversion, intermediate frequency filtering, intermediate frequency signal amplification and AGC control on the down-frequency signal to obtain an intermediate frequency signal.

[0072] Optionally, the baseband board 22 is used to digitally process the signal after RF processing to obtain a digital signal, and send the digital signal to the satellite service processor 23 processor 14. For example, after receiving the intermediate frequency signal, the baseband board can convert the intermediate frequency signal to convert the intermediate frequency signal into a digital signal, and then send the digital signal to the satellite service processor. For example, in actual application, the baseband board can perform A / D sampling on the intermediate frequency signal, and perform remote control spread spectrum sequence capture and tracking, carrier recovery and tracking, despreading and remote control data bit synchronization on the sampled digital sequence in the baseband board to obtain a demodulated remote control PCM signal, and send the PCM signal to the satellite service processor.

[0073] Optionally, the satellite service processor 23 processor 14 is used to determine the control instruction according to the digital signal, and control the RF switch 15 and the first transmitting antenna 12 to be selected according to the control instruction, or control the RF switch 15 and the second transmitting antenna 13 to be selected. For example, the satellite service processor 23 processor 14 can identify the digital signal, and then obtain the control instruction sent by the ground station, and control the RF switch 15 through the control instruction.

[0074] Optionally, the satellite service processor 23 processor 14 is specifically used to determine the control instruction according to the digital signal. The control instruction is a first control instruction or a second control instruction. Optionally, the control instruction can be determined according to the following feasible implementation method: if the digital signal is used to request to obtain the status data of the satellite, the control instruction is the first control instruction. For example, if the ground station sends a request message to obtain the status data of the satellite, the satellite service processor can identify the request message and determine that the control instruction corresponding to the request message is the first control instruction.

[0075] If the digital signal is used to request to obtain multimedia data, the control instruction is the second control instruction. Optionally, the multimedia data may be data collected by the satellite payload. For example, the multimedia data may be image data. For example, if the ground station sends a request message to obtain data collected by the satellite, the satellite service processor may identify the request message and determine that the control instruction corresponding to the request message is the second control instruction.

[0076] If the digital signal is used to request the acquisition of status data and multimedia data, the control instruction is the second control instruction. For example, if the ground station sends a request message to obtain the status data of the satellite and the data collected by the satellite, the satellite service processor can identify the request message and determine that the control instruction corresponding to the request message is the second control instruction.

[0077] After the satellite service processor 23 and the processor 14 determine the control instruction, they can send the control instruction to the radio frequency switch 15 to control the radio frequency switch 15 to be switched with the first transmitting antenna 12, or to control the radio frequency switch 15 to be switched with the second transmitting antenna 13. For example, the satellite service processor can directly control the radio frequency switch to be switched with the first transmitting antenna or the second transmitting antenna.

[0078] Optionally, if the control instruction is the first control instruction, the RF switch 15 is switched on with the first transmitting antenna 12. For example, if the request message sent by the ground station is used to obtain the status data of the satellite, the satellite service processor determines that the control instruction corresponding to the request message is the first control instruction, and the satellite service processor can control the RF switch to be switched on with the first transmitting antenna, and then send the status data of the satellite to the ground station through the first transmitting antenna.

[0079] Optionally, if the control is a second control instruction, the RF switch 15 is switched on with the second transmitting antenna 13. For example, if the request message sent by the ground station is used to obtain the status data and multimedia data (data collected by the satellite) of the satellite, the satellite service processor determines that the control instruction corresponding to the request message is the second control instruction, and the satellite service processor can control the RF switch to be switched on with the second transmitting antenna, and then send the status data of the satellite to the ground station through the second transmitting antenna.

[0080] Optionally, the satellite service processor 23 processor 14 can obtain multimedia data and send the multimedia data to the baseband board 22. The baseband board 22 can store the multimedia data in a database. When sending multimedia data to the ground station, the baseband board 22 can send the multimedia data stored in the database to the ground station through the second transmitting antenna 13. For example, after the satellite service processor 23 processor 14 obtains the image data taken by the satellite, the image data can be stored in the database of the baseband board 22. When the satellite needs to send the image data to the ground station, the satellite service processor 23 processor 14 controls the baseband board 22 to send the image data in the database to the ground station.

[0081] The working process of the processor is described below.

[0082] When the ground station sends a request message to the satellite, the first receiving antenna can obtain the request message and send the request message to the radio frequency board. The radio frequency board performs radio frequency processing on the request message, converts the request message into an intermediate frequency signal, and sends the intermediate frequency signal to the baseband board. The baseband board digitally processes the intermediate frequency signal to obtain a digital signal and sends the digital signal to the satellite service processor. The satellite service processor obtains the digital signal and determines the control instruction corresponding to the digital signal. If the control instruction is the first control instruction, the satellite service processor controls the radio frequency switch and the first transmitting antenna to be selected, and sends the status data of the satellite to the baseband board. After the baseband board digitally processes the status data of the satellite, it sends the status data of the satellite to the radio frequency board. The radio frequency board sends the status data of the satellite to the ground station through the first transmitting antenna. If the control instruction is the second control instruction, the satellite service processor controls the radio frequency switch and the second transmitting antenna to be selected, and controls the baseband board to send the multimedia data in the database to the radio frequency board. The radio frequency board sends the multimedia data collected by the satellite to the ground station through the second transmitting antenna.

[0083] The embodiment of the present application provides a satellite system, which includes a first receiving antenna, a first transmitting antenna, a second transmitting antenna, a radio frequency switch and a processor, and the processor includes a radio frequency board, a baseband board and a satellite service processor, and the radio frequency board is respectively connected to the first receiving antenna, the radio frequency switch and the baseband board, and the baseband board is connected to the satellite service processor, and the radio frequency switch is also connected to the first transmitting antenna and the second transmitting antenna. In the above structure, the radio frequency board can perform radio frequency processing on the request message and send the radio frequency processed signal to the baseband board, the baseband board can perform digital processing on the radio frequency processed signal to obtain a digital signal, and send the digital signal to the satellite service processor, and the satellite service processor can determine the control instruction according to the digital signal, and control the radio frequency switch to be selected with the first transmitting antenna according to the control instruction, or control the radio frequency switch to be selected with the second transmitting antenna. In this way, since different satellite data can be sent when the radio frequency switch is selected with different transmitting antennas, the satellite system can simultaneously send satellite status data and satellite collected data in one system, without setting a corresponding control system for each type of data, thereby reducing the cost of satellite manufacturing.

[0084] Based on any of the above embodiments, Figure 3 , the structure of the satellite system in the above embodiment is further explained.

[0085] Figure 3 This is a schematic diagram of another satellite system structure provided in an embodiment of the present application. Figure 3, including a first receiving antenna 11, a filter 32, a radio frequency board 21, a baseband board 22, a radio frequency switch 15, a satellite service processor 23 processor 14, a first transmitting antenna 12 and a second transmitting antenna 13. Among them, the filter 32 is respectively connected to the first receiving antenna 11, the radio frequency switch 15 and the radio frequency board 21, the baseband board 22 is respectively connected to the radio frequency board 21 and the satellite service processor 23 processor 14, and the radio frequency switch 15 is connected to the first transmitting antenna 12 and the second transmitting antenna 13.

[0086] Optionally, the filter 32 is used to filter the request message and send the filtered signal to the radio frequency board 21. Optionally, the filter 32 can be an X-band transceiver cavity filter 32. For example, in actual applications, the volume of the cubic satellite is small, and the distance between the transmitting antenna and the receiving antenna is small. Therefore, the filter can effectively prevent the transmitting signal of the transmitting antenna from interfering with the receiving signal of the receiving antenna, thereby improving the accuracy of the receiving antenna in obtaining the receiving signal.

[0087] Optionally, the RF board 21 includes a RF receiving unit 33 and a RF transmitting unit. The filter 32 is respectively connected to the RF receiving unit 33 and the RF transmitting unit in the RF board 21. For example, when the first receiving antenna receives a request message, the filter filters the request message and then sends the request message to the RF receiving unit of the RF board. The RF receiving unit and the RF transmitting unit are also connected to the baseband board. For example, the RF receiving unit performs RF processing on the request message and then sends the request message to the baseband board. For example, when a satellite system sends data to a ground station, the RF transmitting unit can receive the data sent by the baseband board and send the data to the filter. The filter filters the data and then sends the data to the RF switch. The RF switch sends the data to the ground station via the transmitting antenna.

[0088] Optionally, the baseband board 22 includes a control chip 35 and an interface circuit 36. The control chip 35 is respectively connected to the RF receiving unit 33, the RF transmitting unit 34 and the interface circuit 36 ​​in the RF board 21, and the interface circuit 36 ​​can be connected to the satellite service computer. Optionally, the control chip 35 can be an FPGA chip. For example, after the control chip processes the digital signal corresponding to the request message, it can send the digital signal to the interface circuit, and the interface circuit sends the digital signal to the satellite service computer.

[0089] Optionally, the RF switch 15 can be connected to a power source, and the satellite service processor 23 and the processor 14 control the RF switch 15 by controlling the power source. For example, the RF switch can be connected to a 12V power source, and when the satellite service processor controls the power source to supply power to the RF switch, the RF switch is connected to the second transmitting antenna, and the satellite system can send a downlink data transmission signal to the ground station through the second transmitting antenna. When the satellite service processor stops supplying power to the RF switch, the RF switch is connected to the first transmitting antenna, and the satellite system can send a downlink data transmission signal to the ground station through the first transmitting antenna.

[0090] Optionally, the satellite system may further include a second receiving antenna 31. The second receiving antenna 31 is connected to the filter 32. Optionally, the first receiving antenna 11 is a receiving antenna facing the ground, and the second receiving antenna 31 is a receiving antenna facing away from the ground. For example, when a satellite is in orbit, the satellite may flip during operation. Therefore, by setting a ground-facing receiving antenna and a sky-facing receiving antenna, it can be ensured that the satellite can always receive the request message sent by the ground station.

[0091] Next, Figure 3 The working principle of the satellite system shown is explained.

[0092] When the first receiving antenna 11 of the satellite receives the request message, the first receiving antenna 11 sends the request message to the filter 32, the filter 32 performs filtering on the request message, and sends the filtered request message to the RF receiving unit 33 in the RF board 21. The RF receiving unit 33 performs RF processing on the request message, and sends the request message to the control chip 35 in the baseband board 22. After the control chip 35 performs digital processing on the request message, it obtains a digital signal corresponding to the request message, and sends the digital signal to the satellite service processor 23 processor 14 through the interface circuit 36.

[0093] After receiving the digital signal, the satellite service processor 23 processor 14 determines the control instruction corresponding to the digital signal. When the request message is used to obtain the status data of the satellite, the satellite service processor 23 processor 14 determines that the control instruction is the first control instruction, and controls the RF switch 15 and the first transmitting antenna 12 to be selected. The satellite service processor 23 processor 14 sends the satellite status data to the control chip 35 of the baseband board 22. The control chip 35 processes the satellite status data and sends the satellite status data to the RF transmitting unit 34 in the RF board 21. The RF transmitting unit 34 sends the satellite status data to the filter 32. After the filter 32 filters the satellite status data, it sends the satellite status data to the RF switch 15. The RF switch 15 sends the satellite status data to the ground station through the first transmitting antenna 12.

[0094] When the request message is used to obtain multimedia data (or, the satellite's status data and multimedia data), the satellite service processor 23 processor 14 determines that the control instruction is the second control instruction, and controls the RF switch 15 and the second transmitting antenna 13 to be selected, and the satellite service processor 23 processor 14 sends the multimedia data to the control chip 35 of the baseband board 22, the control chip 35 processes the multimedia data, and sends the multimedia data to the RF transmitting unit 34 in the RF board 21, the RF transmitting unit 34 sends the multimedia data to the filter 32, the filter 32 filters the multimedia data, and then sends the multimedia data to the RF switch 15, and the RF switch 15 sends the multimedia data to the ground station through the second transmitting antenna 13.

[0095] An embodiment of the present application provides a satellite system, which includes a first receiving antenna, a second receiving antenna, a first transmitting antenna, a second transmitting antenna, a radio frequency switch, a filter and a processor, wherein the processor includes a radio frequency board, a baseband board and a satellite service processor, wherein the radio frequency board is respectively connected to the first receiving antenna, the second receiving antenna, the radio frequency switch and the baseband board, the baseband board is connected to the satellite service processor, and the radio frequency switch is also connected to the first transmitting antenna and the second transmitting antenna. In the above structure, the filter can filter the request message to avoid the transmission signal from infecting the received request message, the radio frequency board can perform radio frequency processing on the request message, and send the radio frequency processed signal to the baseband board, the baseband board can perform digital processing on the radio frequency processed signal to obtain a digital signal, and send the digital signal to the satellite service processor, the satellite service processor can determine the control instruction according to the digital signal, and control the radio frequency switch to be selected with the first transmitting antenna according to the control instruction, or control the radio frequency switch to be selected with the second transmitting antenna. In this way, since different satellite data can be sent when the RF switch is selected with different transmitting antennas, the satellite system can simultaneously send satellite status data and data collected by the satellite in one system, without the need to set up corresponding control systems for each type of data, thereby reducing the satellite's power consumption and the cost of satellite manufacturing.

[0096] 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.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have 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 by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the embodiments of the present application.

Claims

1. A satellite system, characterized in that: include: a first receiving antenna, a first transmitting antenna, a second transmitting antenna, a radio frequency switch and a processor, wherein the processor includes a radio frequency board, a baseband board and a satellite service processor, and the baseband board is used to digitally process the signal after radio frequency processing to obtain a digital signal, wherein: The radio frequency board is respectively connected to the first receiving antenna, the radio frequency switch and the baseband board; The baseband board is also connected to the satellite service processor, and the radio frequency switch is also connected to the first transmitting antenna and the second transmitting antenna; the transmission rate of the first transmitting antenna is lower than the transmission rate of the second transmitting antenna; The processor is used to obtain a request message received by the first receiving antenna, determine a control instruction according to the request message, and control the RF switch to be selected with the first transmitting antenna, or control the RF switch to be selected with the second transmitting antenna according to the control instruction; If the digital signal is used to request to obtain status data of a satellite, the control instruction is a first control instruction; If the digital signal is used to request to obtain multimedia data, the control instruction is a second control instruction; If the digital signal is used to request to obtain the status data and the multimedia data, the control instruction is the second control instruction; The radio frequency switch is specifically used for: If the control instruction is the first control instruction, selecting the first transmitting antenna; If the control instruction is the second control instruction, the second transmitting antenna is selected.

2. The satellite system according to claim 1, characterized in that: The radio frequency board is used to perform radio frequency processing on the request message and send the radio frequency processed signal to the baseband board; The baseband board is used to send the digital signal to the satellite service processor; The satellite service processor is used to determine the control instruction according to the digital signal, and control the radio frequency switch to be selected with the first transmitting antenna, or control the radio frequency switch to be selected with the second transmitting antenna according to the control instruction.

3. The satellite system according to claim 2, characterized in that: The satellite service processor is specifically used for: Determine the control instruction according to the digital signal, the control instruction being a first control instruction or a second control instruction; The control instruction is sent to the radio frequency switch to control the radio frequency switch to be connected to the first transmitting antenna, or to control the radio frequency switch to be connected to the second transmitting antenna.

4. The satellite system according to claim 2 or 3, characterized in that: The satellite system further comprises a filter, wherein The filter is respectively connected to the first receiving antenna, the radio frequency switch and the radio frequency board; The filter is used to filter the request message and send the filtered signal to the radio frequency board.

5. The satellite system according to claim 4, characterized in that: The satellite system further comprises a second receiving antenna, wherein the second receiving antenna is connected to the filter, wherein: The first receiving antenna is a receiving antenna facing the ground; The second receiving antenna is a receiving antenna facing away from the ground.

6. A satellite, characterized in that: The satellite comprises a satellite system as claimed in any one of claims 1-5.

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