CN112910542B - Measurement and control ground detection equipment and system - Google Patents
Measurement and control ground detection equipment and system Download PDFInfo
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- CN112910542B CN112910542B CN202110096401.1A CN202110096401A CN112910542B CN 112910542 B CN112910542 B CN 112910542B CN 202110096401 A CN202110096401 A CN 202110096401A CN 112910542 B CN112910542 B CN 112910542B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18519—Operations control, administration or maintenance
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a measurement and control ground detection device and a system, wherein the device comprises: the system comprises a plurality of channel units, a satellite S frequency band telemetry unit and a satellite S frequency band telemetry unit, wherein the channel units are used for receiving satellite S frequency band telemetry signals, remotely controlling direct instructions, remotely controlling indirect instructions and injecting data; and the power supply and distribution module is used for uniformly supplying power to the plurality of channel units. The portable measurement and control ground detection equipment and the portable measurement and control ground detection system simplify the division interface of the ground detection equipment and the comprehensive test equipment in the conventional measurement and control ground detection equipment and redefine the units. By adopting the modularization technology, the integration of the microwave network module, the radio frequency module, the baseband module, the communication interface module and the power supply and distribution module can be realized, so that the ground detection equipment can be correspondingly adjusted according to the number of satellites, parameters and different communication interfaces, and the task adaptability and portability of the system can be enhanced.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to measurement and control ground detection equipment and system.
Background
As an important component of spacecraft communications, satellites offer a large number of voice, image and data communication services to people. Based on the characteristics of high confidentiality, high anti-interference performance and high survival under war environment, satellites are often used for weapon systems, remote sensing systems, navigation positioning systems, manned aerospace and deep space exploration tasks. The measurement and control ground detection equipment is an important communication device in the satellite development and test process, and is used for bearing the test interaction of specific remote control instructions, specific data, telemetry signals, distance measurement, speed measurement, orbit measurement and other information before the satellite enters orbit. The performance of the earth-detection device is to some extent directly mapped to the health status of the satellite after orbit.
With the development of large-scale integrated circuits, micro-electromechanical technology, new materials and processes, satellites gradually show miniaturization, quantitative, short period and functional trends, and the measurement and control ground detection equipment commonly used at present gradually expands to the generalized direction due to the following defects: 1) The method has no universality and expandability; 2) The volume is relatively large, and the method is not suitable for external field debugging; 3) The development period is relatively long, and model development period nodes are seriously delayed; 4) Aiming at the special matched test equipment of different types, the code is complex; 5) Reliability and maintainability are low; 6) The communication interfaces are relatively few, and various using conditions are difficult to be applied; 7) The frequency point is single and is difficult to adapt to a wide range of frequency bands; 8) Only a single satellite can be commissioned.
Disclosure of Invention
In view of the above, it is an object of the present invention to provide a measurement and control ground inspection apparatus for solving at least one of the above-mentioned drawbacks.
Another object of the present invention is to provide a geodetic system.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the first aspect of the invention provides a measurement and control ground detection device, comprising:
the system comprises a plurality of channel units, a satellite S frequency band telemetry unit and a satellite S frequency band telemetry unit, wherein the channel units are used for receiving satellite S frequency band telemetry signals, remotely controlling direct instructions, remotely controlling indirect instructions and injecting data;
and the power supply and distribution module is used for uniformly supplying power to the plurality of channel units.
In a specific embodiment, the channel unit includes: microwave network module, radio frequency module, baseband module and communication interface module, wherein
The microwave network module is used for carrying out splitting and combining processing on radio frequency signals transmitted by the satellite, carrying out-of-band on input signals and carrying out-of-band suppression on output signals;
the radio frequency module is used for amplifying, filtering and up-converting an input digital signal, converting the digital signal into a radio frequency signal with certain power and outputting the radio frequency signal;
the baseband module is used for completing transmission system selection, coding, encryption and decryption and framing of signals;
and the communication interface module is used for carrying out signal transmission with the upper computer.
In a specific embodiment, the microwave network module includes: 3dB bridge and duplexer wherein
The 3dB bridge adopts a quadrature hybrid bridge mode and a microstrip line branch coupler structure, and is used for equally dividing the power of an input port at an output port and a coupling port when all ports are matched;
and the duplexer is used for completing the receiving and transmitting inhibition in the uplink and the downlink.
In a specific embodiment, the radio frequency module includes: radio frequency unit and front-end signal conditioning module, wherein
The radio frequency unit comprises a filtering circuit, a low-noise amplifying circuit and a variable-sheet circuit and is used for finishing the frequency and amplitude change of the signal.
In a specific embodiment, the baseband module includes an analog-to-digital conversion circuit, a digital-to-analog conversion circuit, and a core processor, where
The analog-to-digital conversion circuit is built based on a successive approximation type analog-to-digital converter;
the digital-to-analog conversion circuit is built based on the DA chip, the filter and the amplitude adjusting circuit.
In a specific embodiment, the communication interface module includes a network port, a CAN, a 422 and a USB interface, and communicates with the host computer through a corresponding interface chip.
In a specific embodiment, the microwave network module is connected to a radio frequency unit of the radio frequency module through a duplexer, the radio frequency module is connected to an a/D analog-to-digital converter or a D/a digital-to-analog converter of the baseband module through a front-end signal conditioning module, the baseband module is connected with the communication interface module through a core processor, and the communication interface module performs information transmission with the upper computer through a driver.
In a specific embodiment, the power supply and distribution module includes: fuse, surge suppression circuit, EMC filter or EMI filter and DC/DC conversion circuit, wherein
The fuse performs overload protection according to the power supply conversion result;
the surge suppression circuit is corresponding to different power supply requirements, and different DC/DC modules are adopted for power supply conversion.
A second aspect of the present invention provides a geodetic system, comprising:
a plurality of satellites;
the measurement and control ground detection equipment of the first aspect of the invention; and
an upper computer, wherein
Each satellite is connected with a channel unit;
the upper computer is connected with the communication interface module in the measurement and control ground detection equipment and is used for identifying multichannel signals.
The beneficial effects of the invention are as follows:
the portable measurement and control ground detection equipment and the portable measurement and control ground detection system simplify the division interface of the ground detection equipment and the comprehensive test equipment in the conventional measurement and control ground detection equipment and redefine the units. By adopting the modularization technology, the integration of the microwave network module, the radio frequency module, the baseband module, the communication interface module and the power supply and distribution module can be realized, so that the ground detection equipment can be correspondingly adjusted according to the number of satellites, parameters and different communication interfaces, and the task adaptability and portability of the system can be enhanced. In addition, the code writing of the measurement and control ground detection system has universality, is simple to change and has better maintainability. Because of the modularized design, the measurement and control ground detection equipment is convenient to carry.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic diagram of a measurement and control ground detection device provided according to the invention.
Fig. 2 shows a schematic diagram of a measurement and control ground detection system provided according to the invention.
Fig. 3 shows a schematic diagram of a design single channel of the measurement and control ground detection system according to the present invention.
FIG. 4 shows a flow chart of a design procedure of the measurement and control ground detection system provided by the invention.
Detailed Description
In order to make the technical scheme and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
The data transmission modes of the current measurement and control ground detection equipment mainly comprise a serial port, a network port and the like, and the serial port is mainly RS-422/485. The maximum transmission rate of serial data is usually only 100Mb/s or less, and the maximum connectable equipment is only about 30; compared with serial port, the Ethernet can reach transmission rate of 1Gbit/s, and the transmission length can reach 500m. However, neither serial nor ethernet support hot plug and plug-and-play. USB2.0 is a novel serial communication interface which is efficient, quick, low in price, small in size and capable of supporting hot plug, the maximum transmission rate can reach 5Gb/s transmission rate, and the maximum number of connectable devices reaches 126, so that compared with other computer buses, the USB has obvious advantages in the aspect of transmission rate. Therefore, the compatibility of various communication modes in the process of generalization is also a key aspect to be considered in the development of portable measurement and control ground detection equipment.
As shown in fig. 1, in one aspect, an embodiment of the present invention provides a measurement and control ground detection apparatus, including:
and the channel units are used for realizing the receiving of satellite S-band telemetry signals, the remote control direct instruction, the remote control indirect instruction and the injection of data.
In a specific embodiment, the channel unit includes: microwave network module, radio frequency module, baseband module and communication interface module, wherein
And the microwave network module is used for carrying out splitting and combining processing on radio frequency signals transmitted by the satellite, carrying out-of-band on input signals and carrying out-of-band suppression on output signals.
In a specific embodiment, the microwave network module includes: 3dB bridge and duplexer wherein
The 3dB bridge adopts a quadrature hybrid bridge mode and a microstrip line branch coupler structure, and is used for equally dividing the power of an input port at an output port and a coupling port when all ports are matched, and almost no output exists at an isolation port.
The duplexer is used for completing the receiving and transmitting inhibition in the uplink and the downlink, and can be designed by adopting a band-pass filter.
The measurement and control ground detection equipment provided by the invention adopts a modularized design, is small in size and convenient to carry, realizes the development of the universal and portable measurement and control ground detection equipment, improves the satellite communication test efficiency and the satellite test quantity, and also ensures the reliability of the equipment.
And the radio frequency module is used for amplifying, filtering and up-converting the input digital signals to convert the digital signals into radio frequency signals with certain power and outputting the radio frequency signals.
In a specific embodiment, the radio frequency module includes: radio frequency unit and front-end signal conditioning module, wherein
The radio frequency unit comprises a filtering circuit, a low-noise amplifying circuit and a variable-sheet circuit and is used for finishing the frequency and amplitude change of the signal.
In one embodiment, the rf module is differentiated for the up/down signals. Aiming at the transmitting signal, the radio frequency module functions of amplifying, filtering, up-converting and the like the input digital signal into a radio frequency signal with certain power for outputting; for the received signals, the radio frequency module filters, amplifies, down-converts, AGC and the like the received downlink signals and outputs the processed downlink signals to the baseband module. The transmitting module can adopt a direct conversion method and a secondary conversion method, and the receiving module can adopt a heterodyne receiver structure and a zero intermediate frequency receiver structure.
The measurement and control ground detection equipment provided by the invention adopts a modularized design, is small in size and convenient to carry, realizes the development of the universal and portable measurement and control ground detection equipment, improves the satellite communication test efficiency and the satellite test quantity, and also ensures the reliability of the equipment.
And the baseband module is used for completing transmission system selection, encoding and decoding, encryption and decryption and framing of signals.
In a specific embodiment, the baseband module includes an analog-to-digital conversion circuit, a digital-to-analog conversion circuit, and a core processor, where
The analog-to-digital conversion circuit is built based on a successive approximation type analog-to-digital converter, and a chip is selected from a high-speed, low-power-consumption and multi-channel converter.
The digital-to-analog conversion circuit is built based on the DA chip, the filter and the amplitude adjusting circuit.
The core processor can be a low-cost and low-power-consumption programmable unit which is developed towards the market, such as an FPGA+DSP.
The measurement and control ground detection equipment provided by the invention adopts a modularized design, is small in size and convenient to carry, realizes the development of the universal and portable measurement and control ground detection equipment, improves the satellite communication test efficiency and the satellite test quantity, and also ensures the reliability of the equipment.
And the communication interface module is used for carrying out signal transmission with the upper computer, wherein the firmware program is downloaded in the module.
In a specific embodiment, the communication interface module includes a network port, a CAN, a 422 and a USB interface, and communicates with the host computer through a corresponding interface chip. The network port CAN transmit data through an ENC28J60 chip, 422 CAN transmit and receive data through 26C31 and 26C32, CAN CAN be uploaded/downloaded through an iso1005 chip, and USB2.0 CAN be realized by using CY7C 68013. USB2.0 requires downloading firmware programs into the corresponding chip.
The measurement and control ground detection equipment provided by the invention adopts a modularized design, is small in size and convenient to carry, realizes the development of the universal and portable measurement and control ground detection equipment, improves the satellite communication test efficiency and the satellite test quantity, and also ensures the reliability of the equipment.
And the power supply and distribution module is used for uniformly supplying power to the plurality of channel units and uniformly distributing and controlling the power supply of all the modules.
In a specific embodiment, the power supply and distribution module includes: fuse, surge suppression circuit, EMC filter or EMI filter and DC/DC conversion circuit, wherein
The power supply and distribution module can realize 220V power conversion through a switch product of a power supply, and the fuse can select a Lite fuse to carry out overload protection according to a power conversion result.
The surge suppression circuit can be designed and built based on LT4363, and different DC/DC modules are adopted for power conversion corresponding to different power supply requirements.
The measurement and control ground detection equipment provided by the invention adopts a modularized design, is small in size and convenient to carry, realizes the development of the universal and portable measurement and control ground detection equipment, improves the satellite communication test efficiency and the satellite test quantity, and also ensures the reliability of the equipment.
In a specific embodiment, the microwave network module is connected to the radio frequency unit of the radio frequency module through the duplexer, the radio frequency module is connected to the A/D analog-to-digital converter or the D/A digital-to-analog converter of the baseband module through the front-end signal conditioning module, the baseband module is connected with the communication interface module through the core processor, and the communication interface module performs information transmission with the upper computer through the driver.
In a specific embodiment, the microwave network module, the radio frequency module, the baseband module, the communication interface module and the power supply and distribution module respectively form an internal interface and transmit internal signals through the connector.
The measurement and control ground detection equipment provided by the invention breaks through the integral design scheme of the traditional measurement and control ground detection equipment, and divides the measurement and control ground detection equipment into different functional units according to the microwave network module, the radio frequency module, the baseband module, the communication interface module and the power supply and distribution module, thereby realizing the functions of receiving satellite S frequency band telemetry signals, remotely controlling direct instructions, indirect instructions and injecting data.
As shown in fig. 2, in another aspect, an embodiment of the present invention provides a measurement and control ground detection system, including:
a plurality of satellites;
the measurement and control ground detection equipment of the first aspect of the invention; and
an upper computer, wherein
Each satellite is connected with a channel unit;
the upper computer is connected with the communication interface module in the measurement and control ground detection equipment and is used for identifying multichannel signals. Aiming at different upper computer communication modes, the wireless communication system has at least 4 interfaces for selection, can perform high-speed data transmission, and realizes that the S frequency band uplink/downlink carrier frequency, the designated bandwidth is adjustable, the output power of a transmitter is adjustable and the Doppler frequency is adjustable.
The system can test a single satellite, can test multiple satellites, and can be used for adding modules during the multiple satellite test.
The upper computer adopts health grade as the judging basis of normal function of the modules aiming at different modules, and adopts LabVIEW software, firmware, driver and processor software dual redundancy technology, thereby realizing soft error detection and recovery.
The measurement and control ground detection system combines the satellite, the measurement and control ground detection equipment and the upper computer, and inputs direct instructions, injection data and indirect instructions into a driving program of the upper computer to realize that S frequency band uplink/downlink carrier frequency, designated bandwidth are adjustable, and transmitter output power is adjustable and Doppler frequency is adjustable.
Fig. 3 is a schematic diagram of a single channel design of the measurement and control ground detection system according to the present invention. In fig. 3, a single satellite, namely a satellite 1, is tested, the satellite 1, a microwave network module, a radio frequency module, a baseband module, a communication interface module, a power supply and distribution module and an upper computer are connected in a connector mode, the upper computer sends a direct instruction, injection data and an indirect instruction to a driving program, the driving program sends a received instruction to signal processing, the signal processing is transmitted to measurement and control ground detection equipment and the satellite 1, then the signal processing is carried out on the data of the satellite 1 to be tested, and the data after the signal processing is stored in the upper computer.
As shown in fig. 4, in order to provide a flow chart of a design program of the measurement and control ground inspection system according to the present invention, an upper computer sets starting parameters of a plurality of channel units, inputs a data acquisition or transmission instruction, stores the data in a designated address if the data of the acquisition or transmission instruction is consistent with the data of the starting parameters, determines whether the stored data is equal to an initialization parameter when the data is stored, and if the stored data is equal to the initialization parameter, can completely store the stored data, and then performs data processing.
It should be understood that the foregoing examples of the present invention are provided merely for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention, and that various other changes and modifications may be made therein by one skilled in the art without departing from the spirit and scope of the present invention as defined by the appended claims.
Claims (7)
1. A geodetic control device, the device comprising:
the system comprises a plurality of channel units, a satellite S frequency band telemetry unit and a satellite S frequency band telemetry unit, wherein the channel units are used for receiving satellite S frequency band telemetry signals, remotely controlling direct instructions, remotely controlling indirect instructions and injecting data;
the power supply and distribution module is used for uniformly supplying power to the plurality of channel units;
the channel unit includes: microwave network module, radio frequency module, baseband module and communication interface module, wherein
The microwave network module is used for carrying out splitting and combining processing on radio frequency signals transmitted by the satellite, carrying out-of-band on input signals and carrying out-of-band suppression on output signals;
the radio frequency module is used for amplifying, filtering and up-converting an input digital signal, converting the digital signal into a radio frequency signal with certain power and outputting the radio frequency signal;
the baseband module is used for completing transmission system selection, coding, encryption and decryption and framing of signals;
the communication interface module is used for carrying out signal transmission with the upper computer;
the ground detection equipment can be adjusted according to the number of satellites, parameters and different communication interfaces by adopting a modularization technology, and the ground detection equipment is used for realizing the integration of a microwave network module, a radio frequency module, a baseband module, a communication interface module and a power supply and distribution module;
the microwave network module includes: 3dB bridge and duplexer wherein
The 3dB bridge adopts a quadrature hybrid bridge mode and a microstrip line branch coupler structure, and is used for equally dividing the power of an input port at an output port and a coupling port when all ports are matched;
and the duplexer is used for completing the receiving and transmitting inhibition in the uplink and the downlink.
2. The apparatus of claim 1, wherein the radio frequency module comprises: radio frequency unit and front-end signal conditioning module, wherein
The radio frequency unit comprises a filtering circuit, a low-noise amplifying circuit and a variable-sheet circuit and is used for finishing the frequency and amplitude change of the signal.
3. The apparatus of claim 1, wherein the baseband module comprises an analog-to-digital conversion circuit, a digital-to-analog conversion circuit, and a core processor, wherein
The analog-to-digital conversion circuit is built based on a successive approximation type analog-to-digital converter;
the digital-to-analog conversion circuit is built based on the DA chip, the filter and the amplitude adjusting circuit.
4. The device of claim 1, wherein the communication interface module includes a network port, CAN, 422, and USB interface, and communicates with the host computer through a corresponding interface chip.
5. The apparatus of claim 1, wherein the microwave network module is connected to a radio frequency unit of the radio frequency module through a diplexer, the radio frequency module is connected to an a/D analog-to-digital converter or a D/a digital-to-analog converter of the baseband module through a front-end signal conditioning module, the baseband module is connected to a communication interface module through a core processor, and the communication interface module performs information transmission with an upper computer through a driver.
6. The apparatus of claim 1, wherein the power supply and distribution module comprises: fuse, surge suppression circuit, EMC filter or EMI filter and DC/DC conversion circuit, wherein
The fuse performs overload protection according to the power supply conversion result;
the surge suppression circuit is corresponding to different power supply requirements, and different DC/DC modules are adopted for power supply conversion.
7. A geodetic control system, comprising:
a plurality of satellites;
the geodetic apparatus of any one of claims 1-6; and
an upper computer, wherein
Each satellite is connected with a channel unit;
the upper computer is connected with the communication interface module in the measurement and control ground detection equipment and is used for identifying multichannel signals.
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| CN115632696B (en) * | 2022-10-12 | 2023-08-29 | 中国科学院微小卫星创新研究院 | Automatic testing system and method for inter-satellite link to-be-tested equipment |
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