CN114339462A - Eight-group simultaneous telemetry data chain system - Google Patents
Eight-group simultaneous telemetry data chain system Download PDFInfo
- Publication number
- CN114339462A CN114339462A CN202111248279.1A CN202111248279A CN114339462A CN 114339462 A CN114339462 A CN 114339462A CN 202111248279 A CN202111248279 A CN 202111248279A CN 114339462 A CN114339462 A CN 114339462A
- Authority
- CN
- China
- Prior art keywords
- missile
- borne
- antenna
- terminal machine
- ground
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses an eight-group simultaneous telemetry data chain system which comprises four parts, namely a missile-borne terminal machine, a ground terminal machine, a missile-borne antenna and a ground antenna, wherein the missile-borne terminal machine and the ground terminal machine are integrally designed and have the same hardware circuit design and the same structural design. The modular structure is adopted for each part of the electromagnetic compatibility testing device, the sealing design is adopted, the dustproof, moistureproof and anticorrosion effects are achieved, the electromagnetic compatibility is facilitated, and meanwhile, the design of the modules is simplified, so that maintenance personnel can fast check out a fault module in the maintenance process, the rapid replacement and debugging are carried out, the maintenance cost is reduced, and meanwhile, the working efficiency of the equipment is improved.
Description
Technical Field
The invention relates to the technical field of data chain design, in particular to an eight-group simultaneous telemetry data chain system.
Background
The data link refers to a link for data intercommunication, and as with the internet, as long as you have a data terminal, you can obtain the information needed by you from the data link, and you can also use the terminal to add things to the data link network. The missile-borne data chain system is a main component of a gun system, and can realize functions of communication, command and real-time transmission of time-frequency images so as to achieve the aim of accurate guidance design. The missile-borne data chain system comprises two parts, namely a missile-borne data chain terminal machine and a ground data chain segment set. The missile-borne data link system adopts wireless uplink and downlink links to realize encrypted transmission of data, instructions and image signals, and realizes effective communication between the missile-borne terminal aircraft and the ground station in the same airspace. And the ground terminal is also responsible for outputting the received flight data and the high-definition image information.
Most of the existing data link systems are poor in anti-interference capability, simultaneous detection and remote control of equipment at different frequency points cannot be achieved, circuit design and function setting of the existing data link systems are complex, fault points are difficult to find during maintenance once problems occur, and maintenance difficulty is increased.
Disclosure of Invention
The present invention is directed to an eight-group simultaneous telemetry data link system to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme: the eight-group simultaneous telemetry data chain system comprises four parts, namely a missile-borne terminal machine, a ground terminal machine, a missile-borne antenna and a ground antenna, wherein the missile-borne terminal machine and the ground terminal machine are integrally designed and have the same hardware circuit design and the same structural design.
The main function of the missile-borne terminal machine is interacted with the seeker and the missile-borne computer, the acquisition and the processing of PAL videos and telemetering data are completed, and the PAL videos and the telemetering data are transmitted to the ground terminal machine through a wireless channel; the ground terminal machine can be in cross-linking with the ground transmission and control equipment to transmit received image data and remote measurement data to the ground transmission and control equipment, and simultaneously receives remote control data and transmits the remote control data to the missile-borne terminal machine through a wireless channel to complete bidirectional data interaction between a missile and the ground; the terminal machine adopts the modularized design idea and consists of a baseband module, a radio frequency module and an image processing module.
The baseband module mainly completes functions of frame disassembly, packaging, coding, modulation, demodulation and the like of the link transceiving data; and meanwhile, carrying out verification and encryption processing on the framed data. The radio frequency module mainly comprises a receiving channel, a transmitting channel, a power supply circuit and an interface circuit, and mainly has the function of realizing the transmission and the reception of radio frequency signals in a time-sharing manner. The image processing module mainly completes H.265 algorithm compression processing of a seeker PAL system video; finishing initialization of SPI and Ethernet interfaces; completing power-on self-test of each module of the terminal machine and uploading; and completing the transmission of remote control, telemetering data and telemetering images.
The shape of the missile-borne antenna is conformal to the missile body, and the structural design adopts wind-proof, rain-proof (water-proof) and dust-proof measures; the missile-borne antenna mainly comprises an antenna radiator, an antenna housing, an installation base plate, a radio frequency connector and the like. The ground antenna adopts a main rod omnidirectional high-gain antenna.
Preferably, the end machine shell is processed by aluminum alloy, the interior of the end machine shell is divided into an upper part and a lower part, and the upper part is used for installing the image processing module and the baseband module; the lower side is used for installing a radio frequency module, and the shell cover adopt a sealing design, so that electronic shielding can be realized.
Preferably, the ground antenna adopts three-section foldable design, ensures convenient to carry, erects simply, and each section is directly docked through the TNC connector.
The invention has the technical effects and advantages that:
(1) the modular structure is adopted for each part of the electromagnetic compatibility testing device, the sealing design is adopted, the dustproof, moistureproof and anticorrosion effects are achieved, the electromagnetic compatibility is facilitated, and meanwhile, the design of the modules is simplified, so that maintenance personnel can fast check out a fault module in the maintenance process, the rapid replacement and debugging are carried out, the maintenance cost is reduced, and meanwhile, the working efficiency of the equipment is improved.
(2) The radio frequency channel and the baseband module work in a matched mode, so that the whole equipment can transmit remote control and telemetering data to the missile-borne computer and the ground launch control equipment in the signal transmission process, the baseband module can perform frequency point and other parameter pre-binding through the interface, and the terminal can work at different frequency points.
Drawings
FIG. 1 is a single set composition block diagram of the system of the present invention.
FIG. 2 is a circuit diagram of the modules of the system of the present invention.
Fig. 3 is a schematic block diagram of a baseband module of the present invention.
FIG. 4 is a functional block diagram of an image processing module according to the present invention.
Fig. 5 is a schematic diagram of the radio frequency module according to the present invention.
Fig. 6 is a schematic diagram of the terminal of the present invention.
Fig. 7 is a schematic diagram of the internal structure of the terminal of the present invention.
Disclosure of Invention
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The eight groups of data chain systems for simultaneous remote measurement comprise a missile-borne terminal machine, a ground terminal machine, a missile-borne antenna and a ground antenna, wherein the missile-borne terminal machine and the ground terminal machine are integrally designed and have the same hardware circuit design and the same structural design, and the terminal machine adopts a modular design idea and consists of a baseband module, a radio frequency module and a video processing module; the end machine composition block diagram is shown in fig. 2.
The system single group composition block diagram of the invention is shown in fig. 1, the working frequency band of the system is 1420 ± 40MHz, a certain frequency point in the following 8 frequency points can be allocated to 8 groups of devices in the region according to the requirement, the 8 groups of devices in the region can work simultaneously, the allocable frequency points are 8 frequency points of 1384MHz, 1396MHz, 1408MHz, 1420MHz, 1432MHz, 1444MHz, 1456MHz and 1468MHz, and the adjacent channel interval is 12 MHz. The system adopts a TDD + FDD working mode, 40ms is 1 subframe, 25 subframes (25Hz) per second, the uplink adopts a spread spectrum system, the time slot width is 4.5ms, 32 bytes are transmitted, the downlink adopts a 4DPSK + frequency domain balance + LDPC (3/4) system, the downlink time slot width is 35ms, and the guard interval between the uplink and the downlink is 250 us.
The baseband module is implemented by adopting an FPGA + ADRV9361 architecture, the FPGA is a large-scale programmable logic device, is a core device for baseband digital signal processing, has the characteristics of high speed, low power consumption, programmability and the like, and can greatly improve the universality and expansibility of the circuit. The baseband module mainly completes functions of frame disassembly, packaging, coding, modulation, demodulation and the like of the link transceiving data; and meanwhile, carrying out verification and encryption processing on the framed data. The baseband module carries out interaction of image data with the image processing module through the SPI bus; remote control/remote measurement data transmission is carried out with the missile-borne computer/ground launch control equipment through an RS422 serial interface; the baseband module performs frequency point and other parameter pre-binding through an RS422 interface to realize that the terminal machine works at different frequency points, an uplink of the baseband module adopts BPSK modulation, CRC16, 31-bit m-sequence spread spectrum, and a remote control frame 32-byte @ refresh rate is 25 Hz; the ground control computer sends a remote control frame to the ground terminal machine through the RS422 interface; the missile-borne terminal machine receives the remote control frame and sends the remote control frame to the flight control through the RS422 interface; the downlink of the baseband module adopts QPSK modulation, frequency domain equalization and LDPC (0.75), and the downlink transmission rate is not less than 2 Mbps; the missile-borne computer and the seeker respectively send telemetering data frames and images to the missile-borne terminal machine through an RS422 interface and a CVBS video interface; and the ground computer receives the downlink video compressed code stream and the telemetering data frame through the RS422 interface and different network multicast ports.
The image processing module of the invention is shown in a schematic block diagram in fig. 4, and mainly completes functions of 1-path PAL system video acquisition, h.265 algorithm compression, image data interaction (uplink transmission and downlink reception) with a baseband module through an SPI interface, image data transmission to ground transmission and control equipment through a 100M ethernet, and the like; when the terminal machine works in a missile-borne terminal machine mode, the image processing module adopts ADV7280 to complete conversion from a leader PAL analog video signal to a BT656 digital video signal, H.265 video compression is carried out by HI3516A, and after the compression is finished, a compressed video code stream is transmitted to the baseband module through an SPI interface; when the terminal machine works in a ground terminal machine mode, the image processing module receives a video code stream sent by the baseband module through the SPI interface, and the decoded video code stream is output through the PAL system.
Fig. 5 shows a schematic diagram of the radio frequency module, the radio frequency module mainly includes a receiving channel, a transmitting channel, a power supply circuit, and an interface circuit, and the module can implement transmission and reception of radio frequency signals in a time-sharing manner. The receiving channel mainly completes the functions of frequency conversion from received radio frequency to intermediate frequency and signal conditioning, and the receiving unit adopts an integrated local oscillator one-time frequency conversion architecture, and has the receiving frequency of 1380-1460 MHz and the intermediate frequency of 470 MH; the transmitting channel is mainly used for completing power conditioning and amplification of the intermediate frequency signal sent by the baseband module, and sending the radio frequency signal to the antenna through power amplification and coupling detection; the power supply circuit mainly realizes power supply protection, common mode filtering, voltage reduction and voltage boosting on power supply input; the interface circuit realizes the transmission of electric signals in each module of the terminal machine.
The schematic diagram of the terminal machine of the invention is shown in fig. 6, the schematic diagram of the internal structure of the terminal machine is shown in fig. 7, the shell of the terminal machine is made of aluminum alloy, the interior of the shell is divided into an upper part and a lower part, and the upper part is used for installing an image processing module and a baseband module; the lower side is used for installing a radio frequency module. The shell and the shell cover adopt a sealing design to meet the electromagnetic shielding requirement; the housing surface was fitted with 2 SMAK connectors and a J30J-15ZKP rectangular connector for rf interface, video input and access and power service interface, respectively.
The specific implementation mode is as follows: after being received by an antenna, the radio frequency signal is sent to an LC band-pass filter and an electronic switch (the same filter and the same electronic switch are shared with a transmitting channel and are subjected to time division multiplexing) at the front end of a radio frequency module, and after being filtered and channel selected, the radio frequency signal enters a receiving channel. The receiving channel mainly comprises a band-pass filter, an SPDT electronic switch, a low-noise amplifier, a mixer and a signal conditioning circuit.
The radio frequency signal is received by an antenna and sent to an LC band-pass filter for filtering out band harmonic clutter and image frequency; the SPDT electronic switch completes the selection of the radio frequency receiving channel and the transmitting channel, and selects the receiving channel by default; the low-noise amplifier completes low-noise amplification and ensures link gain and link noise coefficient; the frequency mixer shifts the frequency spectrum of the radio frequency signal to an intermediate frequency; the signal conditioning circuit carries out filtering and amplification processing on the intermediate frequency signal, and channel stray suppression is improved.
The signal conditioning circuit mainly comprises a low-pass filter, an amplifier and a band-pass filter. The low-pass filter is mainly used for filtering high-frequency harmonic waves output by the amplifier, the amplifier is used for improving link gain and optimizing noise coefficient, and the credit-pass filter is used for selecting the frequency of the intermediate-frequency signals output by the mixer and selecting 470M intermediate-frequency signals. The frequency input signal is sent to a signal conditioning circuit after the out-of-band harmonic clutter is filtered by a band-pass filter; the signal conditioning circuit performs gain amplification and low-pass filtering on the input signal and then sends the signal to the driving amplification circuit; the driving amplification circuit is used for amplifying the signal with low power so as to meet the requirement of the power amplifier on the power of the input signal; the power amplifier amplifies the signal to 37 dBm; the coupling circuit couples the signal output by the power amplifier, and the coupled signal is sent to the detector; the SPDT switch is used for selecting a receiving channel and a transmitting channel to realize time division multiplexing; the coupled signal is finally output after being detected by the detection circuit.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "secured" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The standard parts used by the invention can be purchased from the market, and the special-shaped parts can be customized according to the description and the description of the attached drawings.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an eight data link systems of remote measurement simultaneously, includes that missile-borne terminal machine, ground terminal machine, missile-borne antenna and ground antenna four bibliographic categories divide and constitute which characterized in that: the missile-borne terminal and the ground terminal are integrally designed, have the same hardware circuit design and the same structural design, adopt a modular design idea inside the terminal, and consist of a baseband module, a radio frequency module and an image processing module.
2. The eight set simultaneous telemetry data link system of claim 1, wherein: the ground terminal machine can be in cross-linking with the ground transmitting and controlling equipment to transmit received image data and remote measuring data to the ground transmitting and controlling equipment, and meanwhile remote control data are received and transmitted to the missile-borne terminal machine through a wireless channel, so that bidirectional data interaction between the missile and the ground is completed.
3. The eight set simultaneous telemetry data link system of claim 1, wherein: the baseband module mainly completes functions of frame disassembly, packaging, coding, modulation, demodulation and the like of the link transceiving data; and meanwhile, carrying out verification and encryption processing on the framed data.
4. The eight set simultaneous telemetry data link system of claim 1, wherein: the radio frequency module mainly comprises a receiving channel, a transmitting channel, a power supply circuit and an interface circuit, and mainly has the function of realizing the transmission and the reception of radio frequency signals in a time-sharing manner.
5. The eight set simultaneous telemetry data link system of claim 1, wherein: the image processing module mainly completes H.265 algorithm compression processing of a seeker PAL system video; finishing initialization of SPI and Ethernet interfaces; completing power-on self-test of each module of the terminal machine and uploading; and completing the transmission of remote control, telemetering data and telemetering images.
6. The eight set simultaneous telemetry data link system of claim 1, wherein: the shape of the missile-borne antenna is conformal to the missile body, and the structural design adopts windproof, rainproof (water-proof) and dustproof measures; the missile-borne antenna mainly comprises an antenna radiator, an antenna housing, an installation base plate, a radio frequency connector and the like.
7. The eight set simultaneous telemetry data link system of claim 1, wherein: the ground antenna adopts a main rod omnidirectional high-gain antenna and adopts a three-section foldable design, and all sections are directly butted through a TNC connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111248279.1A CN114339462A (en) | 2021-10-26 | 2021-10-26 | Eight-group simultaneous telemetry data chain system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111248279.1A CN114339462A (en) | 2021-10-26 | 2021-10-26 | Eight-group simultaneous telemetry data chain system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114339462A true CN114339462A (en) | 2022-04-12 |
Family
ID=81044618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111248279.1A Pending CN114339462A (en) | 2021-10-26 | 2021-10-26 | Eight-group simultaneous telemetry data chain system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114339462A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115903633A (en) * | 2023-02-28 | 2023-04-04 | 湖南高至科技有限公司 | Multifunctional measurement and control system of aircraft |
-
2021
- 2021-10-26 CN CN202111248279.1A patent/CN114339462A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115903633A (en) * | 2023-02-28 | 2023-04-04 | 湖南高至科技有限公司 | Multifunctional measurement and control system of aircraft |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107332605B (en) | Measurement and control method based on Ka-S frequency band relay integrated measurement and control system | |
| CN106357320A (en) | Satellite ground station transceiver and satellite communication system | |
| CN104467908B (en) | X frequency range air-ground transmission broadband transceiver | |
| CN109831240B (en) | Anti-interference airborne data link system based on array antenna | |
| CN114339462A (en) | Eight-group simultaneous telemetry data chain system | |
| CN102820893B (en) | Integrated modularized system including RRU (remote radio unit) and antenna, and mobile communication base station | |
| CN111953398A (en) | Measurement and control data transmission integrated system for micro-nano satellite | |
| CN107872271B (en) | Public network communication repeater based on LoRa technology and communication method | |
| CN212969627U (en) | Antenna feed system and antenna kit of vehicle-mounted satellite communication antenna for communication in motion | |
| CN108011641B (en) | Aerial forwarding device of LTE base station | |
| CN110149121B (en) | Adjustable ultra-wideband zero intermediate frequency transceiver radio frequency analog front end | |
| CN115037347A (en) | Dual-band satellite communication simulation transponder | |
| CN212811682U (en) | Monitoring circuit and modem of airborne satellite communication data link transceiving module | |
| CN109617594B (en) | Instruction image transmission system and method of frequency division multiple access and time division multiple access mixed system | |
| CN208461800U (en) | A kind of anti-interference array antenna device of satellite | |
| CN204498226U (en) | A kind of WirelessHD network camera device | |
| CN208079266U (en) | A kind of WirelessHD image transmission system | |
| CN113992318A (en) | Missile-borne data chain system | |
| CN206658201U (en) | A kind of multi-functional mixed duplexing transceiver of biography | |
| CN206350083U (en) | A kind of airborne cockpit display video data acquiring equipment | |
| CN108123735A (en) | A kind of mobile terminal device for being used to resist high frequency cable waste | |
| CN209659460U (en) | A kind of aircraft pod wireless telecommunication system figure biography device | |
| CN113852725A (en) | Modulation-demodulation board card based on ARM and FPGA | |
| CN109981133B (en) | Unmanned marine wireless broadband radio station | |
| CN109462741B (en) | Multi-band digital image transmission terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |