CN103220268B - Airborne ultrashort wave multimedia communication - Google Patents
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Abstract
A kind of airborne ultrashort wave multimedia communication, this system comprises a communication report center and multiple client terminal station; The two-way communication of ultrashort wave wireless channel is used, common composition Star Network framework between communication report center and each client terminal station; Direct communication between communication report center and client terminal station, forwards intercommunication interconnection by communication report center between each client terminal station.This system be applicable to the reliable and stable group-net communication of Review for Helicopter at a high speed under high dynamic and high complex-terrain environment, support that multiple communication node builds with star-like networking mode the airborne ultrashort wave multimedia communication that the multiple business such as network, support image, phone, data communicates.This system not only can use under some such as aerospace engineering landing of return capsule field environment, also can use in the situations such as the news report alive of such as rescue at sea, mountain area rescue, city large-scale activity and race.
Description
Technical field
The present invention relates to radio communication, particularly one is applicable to helicopter-mounted and supports multimedia communication networking, airborne ultrashort wave multimedia communication.
Background technology
Airborne communication control refers to the electronic equipment for liaison on aircraft.Mainly comprise aircraft station and interphone.Aircraft station is the main tool of aircraft and ground, aircraft and naval vessels, liaison between aircraft and aircraft, can be divided into ultrashort wave, shortwave, long wave and super-long wave radio station by wavelength.Ultrashort wave radio set (frequency range be 100 ~ 156 megahertzes, 225 ~ 400 megahertzes) is arranged on all kinds of aircraft, usually works in fone mode, for the command and guide communication in horizon range.
Multimedia communication refers in system or network, can provide the interactive type communication that media information is carried out as various ways synchronizing information such as sound, figure, image, data simultaneously.
Due to the most of airborne communication controls such as ultrashort wave radio set used at present, the long-distance transmissions of audio frequency only can be provided due to the restriction of communication bandwidth, limit the use of some special occasions, as the occasions such as spaceship landing of return capsule, forest fire, rescue at sea, city large-scale activity and scene of the accident commander also need real-time video information and related data support, so that can be real-time the full spectrum information at scene is transferred to measurement and control center and command centre, for the decision-making of leader and commander and live telecast provide the necessary technical guarantee.Meanwhile, multimedia communication networking technology is merged in airborne communication control, also can be aerial multi rack helicopter and give security with communicating between surface car and personnel, reach the bidirectional information Real-Time Sharing of multi-point.
One " machine-carried wireless broadband image transmission system " is disclosed in Chinese patent 200610025877.1, this system can be carried by helicopter carries out wireless transmission, but its business supported is only audio video transmission, and is point-to-point one-way transmission, does not support the two-way networking technology of multiple spot.
Disclose in Chinese patent 200910085603.5 " a kind of onboard high-speed communication system based on OFDM technology ", this system is made up of up transmitting terminal and downlink reception end, has the excellent results realizing remote high speed air communications under maximum Doppler frequency shift rate of change and multi-path environment.But the Channel Modulation demodulation techniques based on OFDM technology being mainly used for point-to-point one way data communication disclosed by this system, do not involve the two-way group-net communication technology of multiple spot supporting multimedia service.
Summary of the invention
The present invention proposes a kind of airborne ultrashort wave multimedia communication, this system is applicable to the reliable and stable group-net communication of Review for Helicopter at a high speed under high dynamic and high complex-terrain environment, support that multiple communication node builds network with star-like networking mode, support the multiple business communications such as image, phone, data; This system not only can use under some such as aerospace engineering landing of return capsule field environment, also can use in the situations such as the news report alive of such as rescue at sea, mountain area rescue, city large-scale activity and race.
Technical solution of the present invention is as follows:
A kind of airborne ultrashort wave multimedia communication comprises a message center station equipment and multiple client terminal station equipment, uses the two-way communication of ultrashort wave wireless channel between communication report center and each client terminal station, common composition Star Network framework.Can direct communication between message center station equipment and client terminal station, forward intercommunication interconnection by communication report center between each client terminal station, a message center station equipment can be set up network with 254 client terminal station equipments at most simultaneously and be connected.Wherein:
Described message center station equipment is by following functions module composition:
Image recording machine: obtain on-the-spot raw video signal;
Internet video coding/decoding module: raw video signal is carried out encoding and sends with the form of IP bag, the video IP received is wrapped the vision signal after being restored of decoding simultaneously, it adopts MPEG-2, MPEG-4, H.264, AVS and VC-1 etc. damage the compression coding and decoding of Image Data Compression encoding and decoding standard video, the analog input output interface of module adopts AV interface, and digital interface adopts 10/100Mbps self adaptation Ethernet interface.
Picture monitor: the vision signal after display recovers, monitors the image scene photographed simultaneously;
Telephone set: realize dialing function, obtains local voice signal, recovers remote speech signal;
VOIP voice gateways module: be IP bag by the dial signaling of telephone set and speech conversion, network transmits, and the simulative telephone interface of module possesses multiple FXS mouth and FXO mouth, digital interface adopts 10/100Mbps self adaptation Ethernet interface;
Network exchange module: based on the Switching Module of Ethernet transmission data, provide multiple Ethernet interface, for each mixed-media network modules mixed-media in connection device;
TSIP routing gateway module: for realizing the mutual conversion of digital TV TS bag and ethernet ip bag, and set up route for the interconnection of each equipment.This module can realize two-way mutual turn between IP bag and standard TS bag, and module possesses routing function, configurable dynamic routing or static routing table.The coffret of TS bag adopts ASI interface, and module has a TS output port and multiple TS input port, the maximum easily extensible to 254 of TS input port, and digital interface adopts 10/100Mbps self adaptation Ethernet interface.
Wide-band modulation module: for TS bag is carried out channel coding modulation, to obtain the broadband rf signal being applicable to wireless fading channel transmission, signal takies spectral bandwidth 8MHz;
Power amplifier: the radiofrequency signal after modulation is carried out signal power amplification;
Cavity body filter: the extraneous noise signal beyond the useful radiofrequency signal of filtering, equipment is equipped with two cavity body filters, and its band passband rate adopts different band passband rates respectively according to the difference of system transmitting-receiving frequency, is respectively used to launch filtering and accept filter;
Duplexer filter: receive the radiofrequency signal after amplifying from rf inputs, export antenna end to after bandpass filtering, the radiofrequency signal simultaneously antenna end received delivers to radio-frequency (RF) output end through another bandpass filtering;
Transmitting-receiving single antenna: for transceiving radio frequency signal, adopts omnidirectional antenna;
Low noise amplifier LNA: the weak radio-frequency signal received amplified, to improve useful signal energy, reduces signal link noise;
Power splitter: the power division of Received signal strength being carried out one-to-many exports;
Narrowband demodulation module: the narrow radio frequency signal for receiving carries out channel demodulation decoding, to recover the original TS bag through wireless fading channel.
Described client terminal station equipment, by following functions module composition, wherein possesses following equal modules with message center station equipment: image recording machine, picture monitor, telephone set, Internet video coding/decoding module, VOIP voice gateways module, network exchange module, TSIP routing gateway module, power amplifier, cavity body filter, duplexer filter, transmitting-receiving single antenna, low noise amplifier LNA.All the other modules are as follows:
Narrowband modulation module: for TS bag is carried out channel coding modulation, to obtain the narrow radio frequency signal being applicable to wireless fading channel transmission, signal takies spectral bandwidth 1MHz;
Broadband demodulator module: the broadband rf signal for receiving carries out channel demodulation decoding, to recover the original TS bag through wireless fading channel.
Wide-band modulation/demodulation module comprises the module adopting ADTB-T, DVB-T, DVB-T2, ISDB-T and DMB-T Digital Television Terrestrial Broadcasting modulating/demodulating technology, reference frequency output between 100MHz-1GHz, output spectrum bandwidth 8MHz; The modulation system of narrowband modulation/demodulation module adopts QAM or QPSK, reference frequency output between 100MHz-1GHz, output spectrum bandwidth 1MHz or 2MHz, can in high-speed mobile situation stable transfer.
Described communication report center and the basic connected mode of client terminal station equipment module are: image recording machine carries out captured in real-time at the scene and obtains raw video signal, this signal is delivered to Internet video coding/decoding module carry out compressed encoding formed data transfer rate be suitable for wireless signal-path band width transmission compressed video IP traffic, be connected into network exchange module; Telephone set is connected to VOIP voice gateways module, the signaling that operating personnel are dialed network telephone and voice are converted to IP traffic after coding, are connected into network exchange module simultaneously; By network exchange module, IP traffic is delivered to the Ethernet interface of TSIP routing gateway module, convert IP packet to digital TV TS stream, and export broadband to or narrowband modulation module completes channel coding modulation, the wide band radio-frequency small-signal being applicable to wireless fading channel transmission of output spectrum bandwidth 8MHz or 1MHz; RF small signals amplify through cavity body filter filter out-band external noise interference signal after output through power amplifier, then carry out after transceiver insulation through antenna transmission through duplexer filter; After antenna receives external RF small signals, complete after transceiver insulation and out-of-band noise target signal filter through duplexer filter and cavity body filter, send into low noise amplifier LNA, the weak radio-frequency signal received is amplified, to improve useful signal energy, reduce signal link noise; The Received signal strength of communication report center exports multichannel narrowband demodulation module respectively to through power splitter and carries out channel demodulation decoding after low noise is amplified; The Received signal strength at client terminal station is directly delivered to broadband demodulator module and is carried out channel demodulation decoding after low noise is amplified; Received signal strength recovers the original TS bag through wireless fading channel after demodulation, is connected into TSIP routing gateway module, TS bag is reduced into IP packet, delivers to Internet video coding/decoding module and VOIP voice gateways module through network exchange module.The business IP packet carried in system can be set by routing table in TSIP routing gateway module and data be transmitted in the Star Network framework of system as required, also by other transmission meanss as being directly connected into other local area network (LAN)s, being sent to the place that the modes such as telecommunication network are sent to needs through satellite communication.
The object of the invention is to provide and a kind ofly can meet the radio multi-media communicating system of helicopter at a high speed under high dynamic airborne applied environment, the zone radius that this system covers in the application can reach kilometer up to a hundred.Star-like group-net communication can be realized just because of this system, the multimedia services such as carrying video, voice, data, the functions such as original airborne broadband wireless image transmission system, short-wave radio set and low speed data chain be applied on helicopter all realize all or part of function by system of the present invention.Present system also realizes seamless link by route and other communication systems, to reach the object of overlength distance transmission, in the application such as search and rescue, rescue, can be the leader being in command centre understand field condition in real time, make a policy in time and strong communication support is provided.
Airborne ultrashort wave multimedia communication message center station equipment of the present invention should be designed to the airborne equipment being suitable for helicopter use, is in the status of message center in Star Network, is responsible for the forwarding work of each client terminal station data.Client terminal station equipment can according to installing or the difference of environment for use, being designed to the apparatus-form such as machine-carried type, vehicular, carrier-borne formula, backpack, fixing machine posture configures to aircraft, vehicle, naval vessels, Communication Personnel or other MOVING STRUCTUREs and fixed building use, to realize the multimedia communication safeguard work under various different application environment.
Accompanying drawing explanation
Fig. 1 is system architecture and the equipment room annexation of airborne ultrashort wave multimedia communication embodiment of the present invention;
Fig. 2 is that the central station device interior of airborne ultrashort wave multimedia communication embodiment of the present invention is formed and annexation;
Fig. 3 is client terminal station equipment Inner Constitution and the annexation of airborne ultrashort wave multimedia communication embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, airborne ultrashort wave multimedia communication of the present invention is described in detail.
First refer to Fig. 1, Fig. 1 is system architecture and the equipment connecting relation of an embodiment of airborne ultrashort wave multimedia communication of the present invention.The present embodiment constitutes the star-like communication network with five communication nodes by a communication report center and four client terminal stations.Wherein, communication report center equipment de-sign is machine-carried type structure, uses for helicopter carrying; Four client terminal stations are designed to machine-carried type, vehicular, fixing machine posture and backpack client terminal station respectively, are applied to helicopter, communication automobile, communication base station equipment machine room and reporter respectively and carry with.
Described message center station equipment is by following module composition:
Image recording machine 1: obtain on-the-spot raw video signal;
Internet video coding/decoding module 4: raw video signal is carried out encoding and sends with the form of IP bag, the video IP received is wrapped the vision signal after being restored of decoding simultaneously, code/decode format adopts H.264 standard, video input exports analog interface and adopts AV interface, and digital interface adopts 10/100Mbps self adaptation Ethernet interface.；
Picture monitor 2: the vision signal after display recovers, monitors the image scene photographed simultaneously;
Telephone set 3: realize dialing function, obtains local voice signal, recovers remote speech signal;
VOIP voice gateways module 5: be IP bag by the dial signaling of telephone set and speech conversion, network transmits, and the simulative telephone interface of module possesses multiple FXS mouth and FXO mouth, digital interface adopts 10/100Mbps self adaptation Ethernet interface;
Network exchange module 6: based on the Switching Module of Ethernet transmission data, provide eight Ethernet interfaces, for each mixed-media network modules mixed-media in connection device;
TSIP routing gateway module 7: for realizing the mutual conversion of digital TV TS bag and ethernet ip bag, and set up route for the interconnection of each equipment, module possesses routing function, configurable dynamic routing or static routing table.The coffret of TS bag adopts ASI interface, and module has a TS output port and four TS input ports, the maximum easily extensible to 254 of TS input port, and digital interface adopts 10/100Mbps self adaptation Ethernet interface;
Wide-band modulation module 8: for TS bag is carried out channel coding modulation, modulation system adopts ADTB-T standard, and to obtain the broadband rf signal being applicable to wireless fading channel transmission, signal takies spectral bandwidth 8MHz;
Power amplifier 12: the radiofrequency signal after modulation is carried out signal power amplification;
Emission cavity filter 13 and receiving cavity filter 15: the extraneous noise signal beyond the useful radiofrequency signal of filtering, equipment is equipped with two cavity body filters, its band passband rate adopts different band passband rates respectively according to the difference of system transmitting-receiving frequency, is respectively used to launch filtering and accept filter;
Duplexer filter 14: receive the radiofrequency signal after amplifying from rf inputs, export antenna end to after bandpass filtering, the radiofrequency signal simultaneously antenna end received delivers to radio-frequency (RF) output end through another bandpass filtering;
Transmitting-receiving single antenna 18: for transceiving radio frequency signal;
Low noise amplifier LNA16: the weak radio-frequency signal received amplified, to improve useful signal energy, reduces signal link noise;
Power splitter 17: the power division of Received signal strength being carried out one-to-many exports;
Narrowband demodulation module 11: the narrow radio frequency signal for receiving carries out channel demodulation decoding, adopts QPSK demodulation, to recover the original TS bag through wireless fading channel.
Described client terminal station equipment, by following functions module composition, wherein has and message center station equipment equal modules: image recording machine 1, picture monitor 2, telephone set 3, Internet video coding/decoding module 4, VOIP voice gateways module 4, network exchange module 6, TSIP routing gateway module 7, power amplifier 12, emission cavity filter 13 and receiving cavity filter 15, duplexer filter 14, receive and dispatch single antenna 18, low noise amplifier LNA16.Other modules are as follows:
Narrowband modulation module 10: for TS bag is carried out channel coding modulation, adopt QPSK modulation system, to obtain the narrow radio frequency signal being applicable to wireless fading channel transmission, signal takies spectral bandwidth 1MHz;
Broadband demodulator module 9: the broadband rf signal for receiving carries out channel demodulation decoding, to recover the original TS bag through wireless fading channel, demodulation mode meets ADTB-T standard.
The basic connected mode of communication report center EM equipment module described in the present embodiment is: image recording machine 1 carries out captured in real-time at the scene and obtains raw video signal, this signal is delivered to the compressed video IP traffic being suitable for wireless signal-path band width transmission that Internet video coding/decoding module 4 carries out meeting the compressed encoding formation data rate 1Mbps of H.264 standard, be connected into network exchange module 6; Telephone set 3 is connected to VOIP voice gateways module 4, and the signaling that operating personnel are dialed network telephone and voice are converted to IP traffic after coding, are connected into network exchange module 6; By network exchange module 6, IP traffic is delivered to the Ethernet interface of TSIP routing gateway module 7, convert IP packet to digital TV TS stream, and export wide-band modulation module 8 to and complete channel coding modulation, modulation system adopts ADTB-T standard, the ultrashort wave frequency band wide band radio-frequency small-signal being applicable to wireless fading channel transmission of output spectrum bandwidth 8MHz; RF small signals amplify through cavity body filter 13 filter out-band external noise interference signal after output through power amplifier 12, then launch through airborne omnidirectional antenna 18 after duplexer filter 14 carries out transceiver insulation; After omnidirectional antenna 18 receives external narrow radio frequency small-signal, complete after transceiver insulation and out-of-band noise target signal filter through duplexer filter 14 and cavity body filter 15, send into low noise amplifier LNA16, the weak radio-frequency signal received is amplified, to improve useful signal energy, reduce signal link noise; Export four tunnel narrowband demodulation modules 11 respectively to through power splitter 17 again and carry out channel demodulation decoding, adopt QPSK demodulation mode; After demodulation, recover the original TS bag through wireless fading channel, be connected into TSIP routing gateway module 7, TS bag be reduced into IP packet, deliver to Internet video coding/decoding module 4 and VOIP voice gateways module 4 through network exchange module 6.The business IP packet carried in system can be set by routing table in TSIP routing gateway module 7 and data be transmitted in the Star Network framework of system as required, also by other transmission meanss as being directly connected into other local area network (LAN)s, being sent to the place that the modes such as telecommunication network are sent to needs through satellite communication.
The basic connected mode of client terminal station equipment module described in the present embodiment is: image recording machine 1 carries out captured in real-time at the scene and obtains raw video signal, this signal is delivered to the compressed video IP traffic being suitable for wireless signal-path band width transmission that Internet video coding/decoding module 4 carries out meeting the compressed encoding formation data rate 1Mbps of H.264 standard, be connected into network exchange module 6; Telephone set 3 is connected to VOIP voice gateways module 4, the signaling that operating personnel are dialed network telephone and voice are converted to IP traffic after coding, are connected into network exchange module 6 simultaneously; By network exchange module 6, IP traffic is delivered to the Ethernet interface of TSIP routing gateway module 7, convert IP packet to digital TV TS stream, and export narrowband modulation module 10 to and complete channel coding modulation, adopt QPSK modulation system, the ultrashort wave frequency band narrow radio frequency small-signal being applicable to wireless fading channel transmission of output spectrum bandwidth 1MHz; RF small signals amplify through emission cavity filter 13 filter out-band external noise interference signal after output through power amplifier 12, then launch through airborne omnidirectional antenna 18 after duplexer filter 14 carries out transceiver insulation; After omnidirectional antenna 18 receives external wide band radio-frequency small-signal, complete after transceiver insulation and out-of-band noise target signal filter through duplexer filter 14 and receiving cavity filter 15, send into low noise amplifier LNA16, the weak radio-frequency signal received is amplified, to improve useful signal energy, reduce signal link noise; Deliver to broadband demodulator module 11 again and carry out channel demodulation decoding, demodulation mode meets ADTB-T standard; Received signal strength recovers the original TS bag through wireless fading channel after demodulation, is connected into TSIP routing gateway module 7, TS bag is reduced into IP packet, delivers to Internet video coding/decoding module 4 and VOIP voice gateways module 5 through network exchange module 6.The business IP packet carried in system can be set by routing table in TSIP routing gateway module 7 and data be transmitted in the Star Network framework of system as required, also by other transmission meanss as being directly connected into other local area network (LAN)s, being sent to the place that the modes such as telecommunication network are sent to needs through satellite communication.Equipment profile and structure are according to occupation mode difference, and be designed to machine-carried type, vehicular, fixing machine posture and backpack, device interior forms all consistent.
The business of the airborne ultrashort wave multimedia communication support described in embodiment comprises video, voice, phone, data etc., Dynamic Recognition be carried out by each TSIP routing gateway in the object IP address that the packet of all business carries in can wrapping according to IP in the Star Network be made up of a communication report center and four client terminal stations, and complete corresponding forwarding, send to destination node corresponding service module.
This system can be applicable to some such as aerospace engineering landing of return capsule field search and rescue in Review for Helicopter at a high speed under high dynamic and high complex-terrain environment, also can rescue in such as rescue at sea, mountain area, use in the situation such as the news report alive of city large-scale activity and race.
Claims (7)
1. an airborne ultrashort wave multimedia communication, is characterized in that this system comprises a communication report center and multiple client terminal station; The two-way communication of ultrashort wave wireless channel is used, common composition Star Network framework between communication report center and each client terminal station; Direct communication between communication report center and client terminal station, forwards intercommunication interconnection by communication report center between each client terminal station;
The formation of described communication report center comprises following EM equipment module:
Image recording machine (1): obtain on-the-spot raw video signal;
Picture monitor (2): the vision signal after display recovers, monitors the image scene photographed simultaneously;
Telephone set (3): realize dialing function, obtains local voice signal, recovers remote speech signal;
Internet video coding/decoding module (4): raw video signal carried out encoding and sends with the form of IP bag, the video IP received being wrapped the vision signal after being restored of decoding simultaneously;
VOIP voice gateways module (5): be IP bag by the dial signaling of telephone set and speech conversion, network transmits;
Network exchange module (6): based on the Switching Module of Ethernet transmission data, provide multiple Ethernet interface, for each mixed-media network modules mixed-media in connection device;
TSIP routing gateway module (7): for realizing the mutual conversion of digital TV TS bag and ethernet ip bag, and set up route for the interconnection of each equipment;
Wide-band modulation module (8): for TS bag is carried out channel coding modulation, to obtain the broadband rf signal being applicable to wireless fading channel transmission, signal takies spectral bandwidth 8MHz;
Power amplifier (12): the radiofrequency signal after modulation is carried out signal power amplification;
Emission cavity filter (13): the extraneous noise signal beyond the useful radiofrequency signal of filtering, equipment is equipped with two cavity body filters, its band passband rate adopts different band passband rates respectively according to the difference of system transmitting-receiving frequency, is respectively used to launch filtering and accept filter;
Duplexer filter (14): receive the radiofrequency signal after amplifying from rf inputs, export antenna end to after bandpass filtering, the radiofrequency signal simultaneously antenna end received delivers to radio-frequency (RF) output end through another bandpass filtering;
Dual-mode antenna (18): for transceiving radio frequency signal;
Low noise amplifier LNA (16): the weak radio-frequency signal received amplified, to improve useful signal energy, reduces signal link noise;
Power splitter (17): the power division of Received signal strength being carried out one-to-many exports;
With multiple narrowband demodulation module (11): the narrow radio frequency signal for receiving carries out channel demodulation decoding, to recover the original TS bag through wireless fading channel;
The EM equipment module at described client terminal station comprises described image recording machine (1), picture monitor (2), telephone set (3), Internet video coding/decoding module (4), VOIP voice gateways module (5), network exchange module (6), TSIP routing gateway module (7), power amplifier (12), emission cavity filter (13), duplexer filter (14), dual-mode antenna (18) and low noise amplifier LNA (16), also has following EM equipment module:
Narrowband modulation module (10): for TS bag is carried out channel coding modulation, to obtain the narrow radio frequency signal being applicable to wireless fading channel transmission, signal takies spectral bandwidth 1MHz;
Broadband demodulator module (9): the broadband rf signal for receiving carries out channel demodulation decoding, to recover the original TS bag through wireless fading channel;
The EM equipment module connected mode at described communication report center and client terminal station is: described image recording machine (1) carries out captured in real-time at the scene and obtains raw video signal, this signal is delivered to Internet video coding/decoding module (4) carry out compressed encoding formed data transfer rate be suitable for wireless signal-path band width transmission compressed video IP traffic, be connected into network exchange module (6), described telephone set (3) is connected to VOIP voice gateways module (5), and the signaling that operating personnel are dialed network telephone and voice are converted to IP traffic after coding, are connected into network exchange module (6), by network exchange module (6), IP traffic is delivered to the Ethernet interface of TSIP routing gateway module (7), convert IP packet to digital TV TS stream, and export wide-band modulation module (8) to or narrowband modulation module (10) completes channel coding modulation, the wide band radio-frequency small-signal being applicable to wireless fading channel transmission of output spectrum bandwidth 8MHz or 1MHz, RF small signals amplify through emission cavity filter (13) filter out-band external noise interference signal after output through power amplifier (12), then carry out launching through antenna (18) after transceiver insulation through duplexer filter (14), after antenna (18) receives external RF small signals, after duplexer filter (14) and receiving cavity filter (15) complete transceiver insulation and out-of-band noise target signal filter, send into low noise amplifier LNA (6), the weak radio-frequency signal received is amplified, to improve useful signal energy, reduce signal link noise, the Received signal strength of communication report center exports multichannel narrowband demodulation module (11) respectively to through described power splitter (17) and carries out channel demodulation decoding after low noise amplifier LNA (6) low noise is amplified, the Received signal strength at client terminal station is directly delivered to broadband demodulator module (9) and is carried out channel demodulation decoding after low noise amplifier LNA (6) low noise is amplified, Received signal strength recovers the original TS bag through wireless fading channel after demodulation, be connected into TSIP routing gateway module (7), TS bag is reduced into IP packet, Internet video coding/decoding module (4) or VOIP voice gateways module (5) is delivered to through network exchange module (6), the business IP packet carried in system to be set by routing table in described TSIP routing gateway module (7) and data is transmitted in the Star Network framework of system as required, or by being directly connected into other local area network (LAN)s, or the place of needs is sent to through the mode that satellite communication is sent to telecommunication network.
2. airborne ultrashort wave multimedia communication according to claim 1, it is characterized in that, described communication report center is carried by aircraft, and described client terminal station is machine-carried type, vehicular or backpack, directly bears respectively portably use for the carrying of airborne, vehicle or personnel.
3. airborne ultrashort wave multimedia communication according to claim 1, it is characterized in that, described Internet video coding/decoding module (4) is MPEG-2, MPEG-4, H.264, the encoder that realizes of AVS and VC-1 Image Data Compression encoding and decoding standard, video input exports analog interface and adopts AV interface, and digital interface adopts 10/100Mbps self adaptation Ethernet interface.
4. airborne ultrashort wave multimedia communication according to claim 1, it is characterized in that, the analog interface of described VOIP voice gateways module (5) possesses multiple FXS mouth and FXO mouth, and digital interface adopts 10/100Mbps self adaptation Ethernet interface.
5. airborne ultrashort wave multimedia communication according to claim 1, it is characterized in that, described TSIP routing gateway module (7) realizes two-way mutual turn between IP bag and standard TS bag, and block configuration dynamic routing or static routing table, possesses routing function, the coffret of TS bag adopts ASI interface, and module has a TS output port and multiple TS input port, the maximum easily extensible to 254 of TS input port, digital interface adopts 10/100Mbps self adaptation Ethernet interface.
6. airborne ultrashort wave multimedia communication according to claim 1, it is characterized in that, described wide-band modulation module and broadband demodulator module are the module of ADTB-T, DVB-T, DVB-T2, ISDB-T or DMB-T Digital Television Terrestrial Broadcasting modulating/demodulating technology, reference frequency output between 100MHz-1GHz, output spectrum bandwidth 8MHz; The modulation system of narrowband modulation/demodulation module adopts QAM or QPSK, reference frequency output between 100MHz-1GHz, output spectrum bandwidth 1MHz or 2MHz.
7. airborne ultrashort wave multimedia communication according to claim 1, is characterized in that, described antenna (18) adopts omnidirectional antenna.
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| CN108307372B (en) * | 2018-01-18 | 2021-04-23 | 陕西烽火实业有限公司 | Multi-path comprehensive processing short wave emergency communication system and method |
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| CN109379089B (en) * | 2018-09-06 | 2020-07-10 | 清华大学 | Airport data bridging method based on software radio |
| CN109246384A (en) * | 2018-10-26 | 2019-01-18 | 深圳职业技术学院 | A kind of wireless image transmission system for Remote Video Conference |
| CN109347646A (en) * | 2018-11-27 | 2019-02-15 | 北京空间技术研制试验中心 | Incorporate image communication system based on multicast |
| CN110072225A (en) * | 2019-04-24 | 2019-07-30 | 广州大学华软软件学院 | A kind of desert tourism deliverance apparatus and control method based on wireless communication transmissions |
| CN116527075B (en) * | 2023-07-05 | 2023-08-25 | 四川九洲空管科技有限责任公司 | Airborne VDL mode 2 aviation communication radio station |
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| CN101841834A (en) * | 2010-05-14 | 2010-09-22 | 杭州绿宇通信技术有限公司 | Wireless communication terminal with dual communication guarantee functions |
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| CN100477846C (en) * | 2002-08-30 | 2009-04-08 | 富士通株式会社 | Communication method, communication device and communication system |
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