CN105635856A - Marine voice communication system for unmanned aerial vehicle - Google Patents
Marine voice communication system for unmanned aerial vehicle Download PDFInfo
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- CN105635856A CN105635856A CN201510960976.8A CN201510960976A CN105635856A CN 105635856 A CN105635856 A CN 105635856A CN 201510960976 A CN201510960976 A CN 201510960976A CN 105635856 A CN105635856 A CN 105635856A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
- H04Q5/24—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange for two-party-line systems
- H04Q5/245—Circuit arrangements in which for one subscriber low frequency speech and/or signalling signals proceed on the line, while for the other subscriber the low frequency speech and/or signalling signals are modulated upon a high frequency carrier signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
- H04B1/0017—Digital filtering
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/02—Arrangements for relaying broadcast information
- H04H20/08—Arrangements for relaying broadcast information among terminal devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Transceivers (AREA)
Abstract
The invention provides a marine voice communication system for an unmanned aerial vehicle. The system comprises a frequency modulation device, a marine radio transceiver, a sight distance link transceiving combination, a ground station and a marine radio ground voice control terminal; the frequency modulation device carries out voice communication with the marine radio transceiver in a frequency band of 156.000MHz to 173.975MHz; and signals among the marine radio transceiver, the sight distance link transceiving combination, the ground station and the marine radio ground voice control terminal are communicated in an RS422 form. According to the marine voice communication system provided by the invention, a voice conversation with a rescued ship is achieved, and the condition of the rescued ship can be timely known.
Description
Technical field
The present invention relates to field of wireless communications, especially relate to a kind of unmanned plane maritime affairs voice communication system.
Background technology
Unmanned plane is in carrying out maritime search and rescue process, it is necessary to ground command center is carried out Speech Communication with marine by rescue ship. Being equipped with maritime affairs radio station by rescue ship, working frequency range is frequency modulation communication in 156MHz��174MHz, and is not loaded in the maritime affairs radio station communicated on unmanned plane on domestic and international market, therefore cannot realize command centre and by the communication between rescue ship.
Summary of the invention
It is an object of the invention to: for prior art Problems existing, it is provided that a kind of unmanned plane maritime affairs voice communication system, the communication issue that solution command centre and sea are rescued between ship.
The goal of the invention of the present invention is achieved through the following technical solutions:
A kind of unmanned plane maritime affairs voice communication system, it is characterized in that, this system includes frequency modulation equipment, maritime affairs radio station transceiver, line of sight link transmitting-receiving combination, earth station and maritime affairs radio station ground based voice and controls terminal, frequency modulation equipment and maritime affairs radio station transceiver carry out Speech Communication in 156.000MHz��173.975MHz frequency range, and the signal that the transmitting-receiving combination of maritime affairs radio station transceiver, line of sight link, earth station and maritime affairs radio station ground based voice control between terminal communicates with RS422 form.
As further technical scheme, described maritime affairs radio station transceiver includes audio board, power panel, transmitting modulation panel, power board and RF front-end module, described power panel is used for providing power supply, and described transmitting modulation panel, power board and RF front-end module are connected with audio board respectively.
As further technical scheme, described audio board includes A/D sampling A/D chip, phonetic codec chip, SCM&FPGA chip; The audio input signal of RF front-end module, after A/D sampling A/D chip, is sent to phonetic codec chip and is encoded; The frequency word that signal after phonetic codec chip coding and single-chip microcomputer send over is recombinated by fpga chip, is then sent to line of sight link transmitting-receiving combination.
As further technical scheme, described transmitting modulation panel includes wave filter and manipulator.
As further technical scheme, described RF front-end module includes band filter, LNA, power splitter, electrically tunable filter, frequency mixer, intermediate-frequency filter, intermediate frequency demodulation chip, frequency synthesizer and fsk demodulator, described band filter is sequentially connected with LNA, power splitter, electrically tunable filter, frequency mixer, intermediate-frequency filter, intermediate frequency demodulation chip, frequency synthesizer is connected with frequency mixer, and power splitter is connected with fsk demodulator.
As further technical scheme, described power board includes low pass filter, attenuator, prime power amplifier module, final stage power amplifier module and transmits/receives switch, one end of low pass filter is connected with the frequency mixer of RF front-end module, the other end is sequentially connected with attenuator, prime power amplifier module, final stage power amplifier module, and final stage power amplifier module is connected with the band filter of RF front-end module by transmitting/receiving switch
As further technical scheme, described maritime affairs radio station ground based voice controls terminal and includes PC control terminal and voice modulation solution tuned plate, PC controls terminal and passes FREQUENCY CONTROL order mutually by fpga chip in serial ports and voice modulation solution tuned plate, and voice modulation solution tuned plate speech signal carries out encoding and decoding process.
As further technical scheme, described voice modulation solution tuned plate includes speech processing module, A/D sampling A/D chip, phonetic codec chip and fpga chip, described speech processing module is connected with A/D sampling A/D chip, phonetic codec chip and fpga chip successively, fpga chip is connected with earth station, and speech processing module is connected with microphone loudspeaker.
Compared with prior art, the invention have the advantages that
1, speech coding channel takies low: according to actual service condition, maritime affairs radio station code rate not can exceed that 2.4K, so, select the chip of 2k code rate, according to the serial communication protocol with line of sight link transmitting-receiving combination, it is sent to line of sight link transmitting-receiving combination with 115200bps speed.
2, owing to have employed the technical program, it is achieved that with by rescue ship voice conversation, can understand timely rescue ship situation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
Fig. 2 is maritime affairs radio station transceiver audio board theory diagram;
Fig. 3 is the structural representation of maritime affairs radio station transceiver;
Fig. 4 is that maritime affairs radio station ground based voice controls terminal theory diagram.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
The present invention provides a kind of unmanned plane maritime affairs voice communication system, as it is shown in figure 1, consist of the following components: the transmitting-receiving combination of frequency modulation equipment, maritime affairs radio station transceiver, line of sight link, earth station and maritime affairs radio station ground based voice control terminal. Frequency modulation equipment adopts conventional frequency modulation equipment, and during application, this equipment is placed on ship. Maritime affairs radio station transceiver can carry out Speech Communication with conventional frequency modulation equipment in 156.000MHz��173.975MHz frequency range, when receiving the signal that frequency modulation equipment sends, the audio signal of its demodulation, after digitized processing, passes to the line of sight link transmitting-receiving combination being arranged on unmanned plane with RS422 form. The RS422 signals revivification that earth station is transmitted by the terminal that controls maritime affairs radio station ground based voice is voice signal and display radio mode. After ground staff sends voice commands and controls operating frequency, maritime affairs radio station ground based voice controls terminal and issues earth station with RS422 form. Maritime affairs radio station transceiver receives the RS422 signal that line of sight link transmitting-receiving combination is transmitted, and is amplified in 156.000MHz��173.975MHz frequency range by this voice commands frequency modulation and launches.
The structure of maritime affairs radio station transceiver as shown in Figure 2 and Figure 3, including audio board, power panel, transmitting modulation panel, power board and RF front-end module. Wherein:
Audio board: include A/D sampling A/D chip, phonetic codec chip, SCM&FPGA chip; The audio input signal of RF front-end module, after A/D sampling A/D chip, is sent to phonetic codec chip and is encoded; The frequency word that signal after phonetic codec chip coding and single-chip microcomputer send over is recombinated by fpga chip, is then sent to line of sight link transmitting-receiving combination. Continuation is controlled RF front-end module by single-chip microcomputer, launches modulation panel, power board. Fpga chip, as the main control unit of transceiver, is received and dispatched combination with line of sight link and is carried out agreement exchange, and transceiver carries out transmitting-receiving control.
Power panel: the supply voltage that each signal plate of output radio station uses. It mainly includes power filtering module, 12V voltage stabilizing output module, 15V voltage stabilizing output module ,-15V voltage stabilizing output module and 5V voltage stabilizing output module.
Launch modulation panel and include wave filter and manipulator.
Power board: transmit/receive switching, pumping signal is carried out power amplification. It mainly includes low pass filter, attenuator, prime power amplifier module, final stage power amplifier module and transmits/receives switch, one end of low pass filter is connected with the frequency mixer of RF front-end module, the other end is sequentially connected with attenuator, prime power amplifier module, final stage power amplifier module, and final stage power amplifier module is connected with the band filter of RF front-end module by transmitting/receiving switch.
RF front-end module: receive signal demodulation, receive buoy information be demodulated, produce launch pumping signal. It mainly includes band filter, LNA, power splitter, electrically tunable filter, frequency mixer, intermediate-frequency filter, intermediate frequency demodulation chip, frequency synthesizer and fsk demodulator, described band filter is sequentially connected with LNA, power splitter, electrically tunable filter, frequency mixer, intermediate-frequency filter, intermediate frequency demodulation chip, frequency synthesizer is connected with frequency mixer, and power splitter is connected with fsk demodulator.
Maritime affairs radio station transceiver work process is as follows:
When A, RF front-end module audio input signal enter, receive control signal to be sent to FPGA by single-chip microcomputer, reception digital filter is opened by FPGA, audio signal carries out A/D conversion through chip AD73311, it is sent to AMBE2000 to be encoded sending to FPGA after (2k speed) processes, the frequency word that signal after the AMBE2000 coding of reception and single-chip microcomputer send over is recombinated by FPGA, and with 115200bps speed, this voice signal is delivered to line of sight link transmitting-receiving combination.
After voice data is passed to the fpga chip of audio board by the transmitting-receiving combination of B, line of sight link, this agreement is unpacked and extracts operating frequency parameter and voice data by fpga chip: the operating frequency parameter received is sent to single-chip microcomputer, single-chip microcomputer makes transceiver be operated in present operating frequency, single-chip microcomputer emission control angle is dragged down simultaneously, open the transmission channel of transceiver; The voice data received reverts to 384bit data according to AMBE2000 data form, and be sent to AMBE2000 be decoded process, after decoding, these data give the AD73311 recovery carrying out speech data, simultaneously, transmitting digital filter is opened, firing order mails to single-chip microcomputer, makes RF front-end module, launches modulation panel and power board all in emission state. Deliver to transmitting modulation panel after the decoded process of digital voice signal, D/A conversion to be modulated.
It addition, when FPGA is simultaneously received decoding data and launches digital voice, first decoding data are sent to line of sight link transmitting-receiving combination in the process carrying out launching digital voice.
When FPGA receives the operating frequency agreement of transceiver, this agreement is resolved by FPGA, and transceiver operating frequency is sent to single-chip microcomputer, and current transceiver operating frequency is modified by single-chip microcomputer. Meanwhile, the frequency after change is returned to FPGA, FPGA and is sent to line of sight link transmitting-receiving combination for continuous three times by returning working frequency information by single-chip microcomputer.
The structure of maritime affairs radio station ground based voice control terminal is as shown in Figure 4, terminal and voice modulation solution tuned plate is controlled including PC, PC controls terminal and passes FREQUENCY CONTROL order mutually by fpga chip in serial ports and voice modulation solution tuned plate, and voice modulation solution tuned plate speech signal carries out encoding and decoding process. It is send maritime affairs radio station transceiver operating frequency that PC controls terminalization, receives the operating frequency that maritime affairs radio station transceiver returns. Voice modulation solution tuned plate effect is to be digitized speech processing, amplifying.
Voice modulation solution tuned plate includes speech processing module, A/D sampling A/D chip, phonetic codec chip and fpga chip, described speech processing module is connected with A/D sampling A/D chip, phonetic codec chip and fpga chip successively, fpga chip is connected with earth station, and speech processing module is connected with microphone loudspeaker.
Ground based voice controls terminal works principle and is similar to transceiver audio board operation principle:
1. voice signal is sent to earth station
When ground voice conversation, press microphone PTT, transmitting digital filter is opened, voice signal amplifies after A/D samples, it is sent to AMBE2000 and is encoded (2k speed), fpga chip carries out again group and detects (13EC+40bit data) after receiving the signal after AMBE2000 coding; FPGA receives the frequency word that PC sends, and the data after speech coding and frequency word are recombinated by FPGA, and press serial port protocol, are sent to earth station with 115200bps speed.
2. the reception of voice signal
The fpga chip of voice modulation solution tuned plate is according to serial port protocol, the data that satellite receiver sends, and extract voice data and frequency word, the protocol data received is reverted to voice data, it is sent to AMBE2000 to be decoded, give D/A by decoded data, then give again after speech processing module carries out audio frequency processing and amplifying and deliver to loudspeaker, the frequency word received is returned to PC.
It addition, when FPGA is simultaneously received decoding data and launches digital voice, be first decoded the process of data by launching digital voice transmission to earth station.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, it is noted that all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.
Claims (8)
1. a unmanned plane maritime affairs voice communication system, it is characterized in that, this system includes frequency modulation equipment, maritime affairs radio station transceiver, line of sight link transmitting-receiving combination, earth station and maritime affairs radio station ground based voice and controls terminal, frequency modulation equipment and maritime affairs radio station transceiver carry out Speech Communication in 156.000MHz��173.975MHz frequency range, and the signal that the transmitting-receiving combination of maritime affairs radio station transceiver, line of sight link, earth station and maritime affairs radio station ground based voice control between terminal communicates with RS422 form.
2. a kind of unmanned plane maritime affairs voice communication system according to claim 1, it is characterized in that, described maritime affairs radio station transceiver includes audio board, power panel, transmitting modulation panel, power board and RF front-end module, described power panel is used for providing power supply, and described transmitting modulation panel, power board and RF front-end module are connected with audio board respectively.
3. a kind of unmanned plane maritime affairs voice communication system according to claim 2, it is characterised in that described audio board includes A/D sampling A/D chip, phonetic codec chip, SCM&FPGA chip; The audio input signal of RF front-end module, after A/D sampling A/D chip, is sent to phonetic codec chip and is encoded; The frequency word that signal after phonetic codec chip coding and single-chip microcomputer send over is recombinated by fpga chip, is then sent to line of sight link transmitting-receiving combination.
4. a kind of unmanned plane maritime affairs voice communication system according to claim 2, it is characterised in that described transmitting modulation panel includes wave filter and manipulator.
5. a kind of unmanned plane maritime affairs voice communication system according to claim 2, it is characterized in that, described RF front-end module includes band filter, LNA, power splitter, electrically tunable filter, frequency mixer, intermediate-frequency filter, intermediate frequency demodulation chip, frequency synthesizer and fsk demodulator, described band filter is sequentially connected with LNA, power splitter, electrically tunable filter, frequency mixer, intermediate-frequency filter, intermediate frequency demodulation chip, frequency synthesizer is connected with frequency mixer, and power splitter is connected with fsk demodulator.
6. a kind of unmanned plane maritime affairs voice communication system according to claim 2, it is characterized in that, described power board includes low pass filter, attenuator, prime power amplifier module, final stage power amplifier module and transmits/receives switch, one end of low pass filter is connected with the frequency mixer of RF front-end module, the other end is sequentially connected with attenuator, prime power amplifier module, final stage power amplifier module, and final stage power amplifier module is connected with the band filter of RF front-end module by transmitting/receiving switch.
7. a kind of unmanned plane maritime affairs voice communication system according to claim 1, it is characterized in that, described maritime affairs radio station ground based voice controls terminal and includes PC control terminal and voice modulation solution tuned plate, PC controls terminal and passes FREQUENCY CONTROL order mutually by fpga chip in serial ports and voice modulation solution tuned plate, and voice modulation solution tuned plate speech signal carries out encoding and decoding process.
8. a kind of unmanned plane maritime affairs voice communication system according to claim 7, it is characterized in that, described voice modulation solution tuned plate includes speech processing module, A/D sampling A/D chip, phonetic codec chip and fpga chip, described speech processing module is connected with A/D sampling A/D chip, phonetic codec chip and fpga chip successively, fpga chip is connected with earth station, and speech processing module is connected with microphone loudspeaker.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782574A (en) * | 2016-12-15 | 2017-05-31 | 成都航天通信设备有限责任公司 | A kind of digital audio modular converter and conversion method |
| CN107230480A (en) * | 2017-05-25 | 2017-10-03 | 四川腾盾科技有限公司 | A kind of double-directional speech means of communication based on airborne line of sight link |
| CN108173590A (en) * | 2017-12-28 | 2018-06-15 | 彩虹无人机科技有限公司 | A kind of unmanned plane voice trunking communication system |
| CN112272023A (en) * | 2020-10-23 | 2021-01-26 | 成都航天通信设备有限责任公司 | FPGA-based signal processing channel selection method |
| CN113938178A (en) * | 2021-09-08 | 2022-01-14 | 航天时代飞鹏有限公司 | Voice radio station communication implementation method and system based on unmanned aerial vehicle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6085109A (en) * | 1992-04-30 | 2000-07-04 | Matsushita Electric Industrial Co., Ltd. | Wireless telephone equipment operating as a cordless and cellular telephone |
| CN201655045U (en) * | 2009-07-10 | 2010-11-24 | 贵州盖克无人机有限责任公司 | Unmanned aerial vehicle (UAV) flight anticollision device |
| CN202334505U (en) * | 2011-11-22 | 2012-07-11 | 成都航天通信设备有限责任公司 | Airborne ultra-short wave radio station |
| CN202652218U (en) * | 2012-03-14 | 2013-01-02 | 湖南天幕智能科技有限公司 | Emergency communication helicopter relay |
| EP2710400A2 (en) * | 2011-05-16 | 2014-03-26 | Radionor Communications AS | Method and system for long-range adaptive mobile beam-forming ad-hoc communication system with integrated positioning |
| CN203909995U (en) * | 2014-04-01 | 2014-10-29 | 成都航天通信设备有限责任公司 | Sea condition information acquisition and transmission module |
| CN204314724U (en) * | 2014-07-26 | 2015-05-06 | 西安展翼航空科技有限公司 | A kind of high-speed unmanned aerial vehicle telechirics |
-
2015
- 2015-12-18 CN CN201510960976.8A patent/CN105635856B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6085109A (en) * | 1992-04-30 | 2000-07-04 | Matsushita Electric Industrial Co., Ltd. | Wireless telephone equipment operating as a cordless and cellular telephone |
| CN201655045U (en) * | 2009-07-10 | 2010-11-24 | 贵州盖克无人机有限责任公司 | Unmanned aerial vehicle (UAV) flight anticollision device |
| EP2710400A2 (en) * | 2011-05-16 | 2014-03-26 | Radionor Communications AS | Method and system for long-range adaptive mobile beam-forming ad-hoc communication system with integrated positioning |
| US20140105054A1 (en) * | 2011-05-16 | 2014-04-17 | Radionor Communication As | Method and System for Long-Range Adaptive Mobile Beam-Forming Ad-Hoc Communication System with Integrated Positioning |
| CN202334505U (en) * | 2011-11-22 | 2012-07-11 | 成都航天通信设备有限责任公司 | Airborne ultra-short wave radio station |
| CN202652218U (en) * | 2012-03-14 | 2013-01-02 | 湖南天幕智能科技有限公司 | Emergency communication helicopter relay |
| CN203909995U (en) * | 2014-04-01 | 2014-10-29 | 成都航天通信设备有限责任公司 | Sea condition information acquisition and transmission module |
| CN204314724U (en) * | 2014-07-26 | 2015-05-06 | 西安展翼航空科技有限公司 | A kind of high-speed unmanned aerial vehicle telechirics |
Non-Patent Citations (3)
| Title |
|---|
| THOMAS P. MULKERIN: "L-Band Commercial Communications Service for Unmanned Aircraft Systems", <2007 INTEGRATED COMMUNICATIONS, NAVIGATION AND SURVEILLANCE CONFERENCE> * |
| 孙元亮: "无人机在海事系统中的应用研究", 《（第五届）中国无人机大会论文集》 * |
| 邓小明: "浅谈无人机在海事监管的应用", 《中国水运》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782574A (en) * | 2016-12-15 | 2017-05-31 | 成都航天通信设备有限责任公司 | A kind of digital audio modular converter and conversion method |
| CN107230480A (en) * | 2017-05-25 | 2017-10-03 | 四川腾盾科技有限公司 | A kind of double-directional speech means of communication based on airborne line of sight link |
| CN108173590A (en) * | 2017-12-28 | 2018-06-15 | 彩虹无人机科技有限公司 | A kind of unmanned plane voice trunking communication system |
| CN112272023A (en) * | 2020-10-23 | 2021-01-26 | 成都航天通信设备有限责任公司 | FPGA-based signal processing channel selection method |
| CN112272023B (en) * | 2020-10-23 | 2023-06-20 | 成都航天通信设备有限责任公司 | Signal processing channel selection method based on FPGA |
| CN113938178A (en) * | 2021-09-08 | 2022-01-14 | 航天时代飞鹏有限公司 | Voice radio station communication implementation method and system based on unmanned aerial vehicle |
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| CN105635856B (en) | 2022-02-01 |
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