CN107483102A - More card Big Dippeves receive and dispatch radio station transponder - Google Patents
More card Big Dippeves receive and dispatch radio station transponder Download PDFInfo
- Publication number
- CN107483102A CN107483102A CN201710869233.9A CN201710869233A CN107483102A CN 107483102 A CN107483102 A CN 107483102A CN 201710869233 A CN201710869233 A CN 201710869233A CN 107483102 A CN107483102 A CN 107483102A
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- radio station
- card
- big dipper
- voice
- signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18515—Transmission equipment in satellites or space-based relays
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
Abstract
The problem of communication range is small, blind area is more be present in now widely used radio station's intercom system, a kind of more card Big Dipper transmitting-receiving radio station transponder sets are proposed for this present invention, the device carries out voice transfer using compass multi-card switching, and be converted to ultrashort wave radio set signal and received and dispatched, and then extend the use range in intercom and radio station.Device includes compass multi-card transmitting-receiving control module, main control unit, ultrashort wave and receives transmitter unit.Compass multi-card transceiver module switches transmission control by multi-user card, improves the frequency and bandwidth of the transmission of voice signal, improves the real-time of speech talkback；Voice signal is carried out low code stream compression and passes through the stereo process that is delayed by main control unit, improve the identification of narrowband speech under normal word speed, meanwhile the present invention have also been devised the conversion between radio station adapter circuit completion Big Dipper voice signal and radio signals, including PTT, COR and compensation of delay.
Description
Technical field
The present invention relates to a kind of radio station and the voice signal retransmission unit of Big Dipper short message communication field, more particularly to
It is a kind of with more card channel transmission voices and be converted to VHF/UHF sections radio station transmission conversion equipment.
Background technology
Now widely used wireless intercom system, communication distance is general only in several kilometer ranges, either simulation or
Digital radio station, it must be relied on to expanded scope and set up various base stations, repeater station, or relied on and plugged into public network.But
It is to be covered in the field such as some mobility industries such as maritime affairs, shipping, mine locating and frontier defense, forest policeman and emergent anti-terrorism, public network communication
Often there is substantial amounts of blind area in lid, cause the communication barrier, and these obstacles are generally difficult to go beyond.Beidou satellite navigation system is
China voluntarily develops, voluntarily builds, voluntarily manages, and has the regional satellite navigation system of entirely autonomous intellectual property, should
System is in addition to positioning and timing function also with a wide range of seamless coverage bi-directional communication function.Therefore, the present invention proposes
With reference to Big Dipper short message and radio station forwarding capability, existing radio station is set to accomplish a wide range of, seamless coverage of cross-region, so that radio station
Blind area communication be possibly realized.
The content of the invention
The invention provides it is a kind of based on more card Big Dippeves transmitting-receiving radio station transponder, with solve radio station voice it is a wide range of across
Region transmission problem, the connection of two equipment is as shown in Figure 1.Whole signal flow is the radio station that radio station is received and dispatched to more card Big Dippeves
Transponder arrives the equipment that big-dipper satellite is sent to opposite end again, is finally converted to radio signals and is transmitted.
The present invention uses Big Dipper channel as voice transfer passage, and is converted into intercom radio station and is forwarded.However, by
In the limitation of Big Dipper RDSS service capacities, the conveying length and the service frequency of domestic consumer's card have strict limitation, to accomplish reality
When voice transfer be extremely difficult.Therefore, the present invention has done following design：
1. using compass multi-card voice transfer module, the design of original single deck tape-recorder is changed to the civilian card of multiple Big Dippeves（1 minute hair one
It is secondary）Switching transmission in turn is carried out, while voice packet is subjected to packing parsing according to Big Dipper short message agreement and transmitted；
2. designing the audio mixing compensation for completing low code stream compression and sound by speech processing circuit, make the reduction of sound code stream, in real time
Property and tonequality further improve, can provide code stream selection according to requirement of real-time, when using ultralow code stream 600bps when, voice can
Reach the requirement of real time of radio station intercommunication, and the intelligibility of sound is improved by stereo process；
3. being designed by adapter circuit, compass multi-card transmission signal and radio station voice signal are changed mutually, controlled by being adapted to
And Speech processing, realize the Big Dipper relaying of intercom and a wide range of forwarding capability.
Such as accompanying drawing 2, the present invention includes compass multi-card transmitting-receiving control module, main control unit, ultrashort wave and receives transmitter unit.
1. compass multi-card receives and dispatches control module
The main control processor of module is sent out data according to certain frequency by way of switching to subscriber card poll, should
Mode is automatically configured according to the quantity of IC-card, increases exponentially the speed of data transmission, so as to allow radio station speech talkback
Real-time is ensured.
2. main control unit
Such as accompanying drawing 3, main control unit includes main control MCU, Audio Processing Unit and radio station adapter circuit composition.MCU complete with it is more
The card Big Dipper receives and dispatches the interaction of control module；Carry out the protocol groups bag of voice packet and unpack, while receive and be sent to speech processes list
Member.
Audio Processing Unit completes compression and the decompression of voice, while carries out analog-to-digital conversion, and Audio Processing Unit includes
Codec encoding and decoding and compress speech part and stereo process, codec use general vocoder, complete the digital-to-analogue of voice signal
Conversion；Compress speech part uses multi-rate speech compression chip, and spirit can be carried out to code check according to voice quality and transmission requirement
Configuration living；Handled additionally, due to using the compression of low code stream, the clear of sound is typically resulted under lack sampling and compression loss state
Clear degree, intelligibility are reduced, and voice signal can be compensated to a certain extent using preposition stereo process.
Radio station adapter circuit mainly completes the processing such as control signal conversion and the sound-controlled delay between radio station.Fit in radio station
Include control signal PPT, COR, VOX of the use in current simulation numeral radio station level conversion and SECO with circuit, with
The requirement of Big Dipper real-time communication is adapted to, the problems such as avoiding losing word and winding up.
3. ultrashort wave receives and transmitter unit
Ultrashort wave reception and transmitter unit include modulation, power amplification, the low noise of reception is amplified, voice signal demodulates, at signal
Reason and associated station control interface, complete the reception and transmission of radio signals.Radio station control interface passes through the language with main control unit
The conversion from Big Dipper voice signal and radio signals is completed in sound processing unit and the connection of radio station adapter circuit.
Brief description of the drawings
The accompanying drawing Big Dipper of card more than 1 radio station transponder system figure；
The accompanying drawing Big Dipper of card more than 2 radio station repeater structures block diagram；
The Audio Processing Unit internal frame diagram of accompanying drawing 3；
The PTT of accompanying drawing 4 is controlled and stereo process schematic diagram.
Embodiment
Such as accompanying drawing 2, more card Big Dipper radio station transponders include compass multi-card transmitting-receiving control module, main control unit and ultrashort wave
Receive transmitter unit composition.
Compass multi-card is received and dispatched control module and designed using full chip solution, and crystal oscillator, power management, FLASH, AD/DA etc. are adopted
With general-purpose device, complete to treat from whole Big Dipper satellite signals that antenna reception satellite RF signal interacts to user data
Journey, including：Down coversion, mixing, filtering, amplification and the digital quantization of satellite RF signal, and satellite baseband signal capture,
Essence is with, demodulation, despreading, and Viterbi decodings, transmitting text is formed, coding, spread spectrum, the parsing of text, unpacking, group bag, goes out inbound
Protocol processes, and subscriber interface protocol processing, while complete to include the processing control of the special data such as more IC-cards and virtual IC-card,
The final repertoire for realizing the switching of Big Dipper multi-user card and transmission of voice packets control.
Main control unit includes MCU, radio station adapter circuit and Audio Processing Unit composition, and as shown in Figure 4, MCU is used
Stc12C5A16S2, MCU are attached with Big Dipper transmission unit using USB.Radio station adapter circuit connection MCU I/O, carries out 5V
To 3.3V conversion, while carry out PTT, COR control.Wound up compensation deals to lose word, radio station adapter circuit employs
Schmitt trigger circuit has done compensation of delay processing.The compress speech part of Audio Processing Unit uses MA24126,
MA24126 is a multi-rate speech codec chip based on MELP models.MA24126 is connected using serial line interface with MCU,
Realize the reading and write-in of vocoded data, in-chip FLASH and RAM built in MA24126, can single-chip realize the real-time of voice
Encoding and decoding, without plug-in memory, tri- kinds of code rates of 600bps, 1200bps and 2400bps are supported, the selection of speed can have
Chip exterior pin or software command are controlled.The codec of Audio Processing Unit uses AIC23 vocoders, and the upper electricity of AIC23 is certainly
It is dynamic that it is configured, without intervening.The input/output signal of AIC23 vocoders is connected to stereo process unit, and downmixing unit uses
PT2399, PT2399 are built-in with A/D, D/A converter, can be digitized processing to the analoging sound signal of input, and it is integrated
The interior circuit block diagram of block as shown in Figure 4, the voice signal from AIC23, is coupled after volume controls by C72, input electricity
R126, R127 are hindered, is sent to active second order filter LPFl end of oppisite phase.Meanwhile the voice signal after delay process is by defeated
After entering resistance R130, coupled capacitor C76;It is overlapped with end of oppisite phase of the primary sound sound signal in LPFl.Mixing sound after superposition
After the active second-order low-pass filter that signal is formed via R128, C74, R127, C80, LPFl amplifies, two-way is divided to export.Wherein
All the way through current-limiting resistance R129, coupled capacitor C75, rearmounted amplifying circuit is sent to;Another way is directly sent to compare inside PT2399
The end of oppisite phase of device, in-phase end and operational amplifier OPl, the internal 4.7k Ω resistance of comparator, the integration that external capacitor C89 is formed
The output end of device is connected.Comparator and integrator combine, and realize that AD (analog/digital) is changed, and by transformation result from DI
Input is stored in data storage RAM to PT2399 internal data process circuits.Digital audio signal after delay process,
Exported from DOl to Dynamic Matching or DEM (Dyanamic Element Matching) circuit, carry out D/A conversions.After conversion
Signal after the integrator being made up of operational amplifier 0P2,4.7k Ω internal resistances, external capacitor C82 is filtered processing,
Simulated audio signal is exported from (12) pin.（12) analoging sound signal of pin output is through input resistance R132, deliver to by R134,
The active second-order low-pass filter that C79, R133, C81, LPF2 are formed, voice signal after amplification is from (14) pin (LPF2-OUT)
Output.The output signal filters out high-frequency noise by the low pass filter being made up of R135, C78, then coupled electric capacity C77, mixed
Volume potentiometer R131 is rung, feeds back to the input of reverberation process circuit.
Ultrashort wave radio set receives and transmitter module uses SR-FRS-1 modules, and high-performance radio-frequency built in the module receives and dispatches core
Piece, microcontroller and RF power amplification, outer controller by the Asynchronous Serial Interface setup module running parameter of standard and can be controlled
Make whole module transmitting-receiving.The receiving portion of module uses double conversion, and the process of superhet single-conversion includes, and is inputted from antenna
Signal by transmitting-receiving change-over circuit and bandpass filter after carry out radio frequency amplification, then by bandpass filter enter be mixed, will
Amplified signal from radio frequency is mixed with the first local oscillation signal from phase-locked loop frequency synthesizer, the first intermediate frequency of generation, and first
Intermediate-freuqncy signal further eliminates the noise signal of neighboring trace by crystal filter.Filtered first intermediate-freuqncy signal enters at intermediate frequency
Chip is managed, is mixed the second intermediate-freuqncy signal of generation again with the second local oscillation signal, the second intermediate-freuqncy signal passes through a ceramic filter
After filtering out useless spurious signal, it is exaggerated, frequency discrimination and subsonics are handled, generation audio signal.Audio signal is filtered by amplification, band logical
Ripple device, the circuit such as postemphasis, and amplifies into volume control circuit and power amplifier, obtains exports audio signal, the sound of output
Frequency signal is connected with the audio input of main control unit.The audio output connection audio amplifier circuit of master control again by modulated signal and
Modulation circuit preemphasis and bandpass filter directly carry out F3E/FSK modulation into voltage controlled oscillator.Signaling moiety is produced by CPU
CTCSS/DTCSS signals adjust by amplification, are modulated into voltage controlled oscillator.Emitting portion is using phaselocked loop and voltage-controlled shakes
Swing device and produce radio-frequency carrier signal, specified radio-frequency power is produced by Hyblid Buffer Amplifier, excitation amplification and power amplification, by day
Line low pass filter suppresses harmonic wave, is then launched by antenna.
Claims (5)
1. the present invention relates to a kind of more card Big Dipper transmitting-receiving radio station transponders, it is characterised in that by radio station and Big Dipper short message phase
With reference to passing through the use range of the device extended simulation or digital handset；More card Big Dipper transmitting-receiving radio station transponders include the Big Dipper
More card transmitting-receiving control modules, main control unit, ultrashort wave receive transmitter unit；The compass multi-card transmitting-receiving control module completes voice
The Big Dipper transmission of bag；The main control unit is completed to include speech processes, the adaptation of radio station control signal and Big Dipper voice packet
Parsing and control；Ultrashort wave receives includes modulation /demodulation and Transmit Receive Unit with transmitter unit.
2. according to right 1, it is characterised in that obtained by device of the present invention by the control to radio interface with being adapted to
Voice signal is taken, encoding compression processing is further carried out to voice, and relaying is used as by big-dipper satellite, radio signals is carried out and turns
Hair, local covering and a wide range of seamless coverage of the Big Dipper in radio station are combined, overcome that radio station coverage is small and communication is blind
The problem of area.
3. according to claim 2, it is characterised in that using the Big Dipper bulk Data Transfer Module of single user machine multi-user card, utilize
Compass multi-card transceiver module in device multi-user card switching transmission control function, improve voice signal transmission frequency with
Bandwidth, so as to substantially increase the actual effect of Big Dipper speech talkback.
4. according to claim 1, it is characterised in that radio station voice signal is carried out by a point card point by the main control unit of device
Bag transmission, low code stream compression and stereo process, to improve effective conveying length of voice, and improve the low code under normal word speed
Flow the voice recognition degree of voice signal.
5. according to claim 4, its feature is related to Big Dipper voice signal and is converted to the PTT compensation of delay that radio signals are related to
Unit, control signal converting unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710869233.9A CN107483102A (en) | 2017-09-23 | 2017-09-23 | More card Big Dippeves receive and dispatch radio station transponder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710869233.9A CN107483102A (en) | 2017-09-23 | 2017-09-23 | More card Big Dippeves receive and dispatch radio station transponder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107483102A true CN107483102A (en) | 2017-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710869233.9A Pending CN107483102A (en) | 2017-09-23 | 2017-09-23 | More card Big Dippeves receive and dispatch radio station transponder |
Country Status (1)
| Country | Link |
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| CN (1) | CN107483102A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183743A (en) * | 2017-12-28 | 2018-06-19 | 江苏星宇芯联电子科技有限公司 | The Beidou communication system for being used for transmission voice, picture based on soft compressed encoding |
| CN109936823A (en) * | 2019-04-02 | 2019-06-25 | 西安极蜂天下信息科技有限公司 | Communication means and device |
| CN114268912A (en) * | 2020-09-16 | 2022-04-01 | 北京汇美电子技术有限公司 | Beidou mountain and sea communication system |
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| US20140036844A1 (en) * | 2010-11-09 | 2014-02-06 | Telefonaktiebolaget L M Ericsson (Publ) | Power control for ack/nack formats with carrier aggregation |
| CN104828698A (en) * | 2015-04-15 | 2015-08-12 | 华东师范大学 | Ad Hoc network-based crane automatic cruising system of Beidou positioning system, and method thereof |
| CN205071021U (en) * | 2015-09-18 | 2016-03-02 | 中央民族大学 | Full duplex multiple access instant messaging terminal based on big dipper short message |
| CN106789212A (en) * | 2016-12-12 | 2017-05-31 | 重庆金美通信有限责任公司 | A kind of method that utilization Big Dipper short message channel intelligently opens radio station network |
-
2017
- 2017-09-23 CN CN201710869233.9A patent/CN107483102A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140036844A1 (en) * | 2010-11-09 | 2014-02-06 | Telefonaktiebolaget L M Ericsson (Publ) | Power control for ack/nack formats with carrier aggregation |
| CN104828698A (en) * | 2015-04-15 | 2015-08-12 | 华东师范大学 | Ad Hoc network-based crane automatic cruising system of Beidou positioning system, and method thereof |
| CN205071021U (en) * | 2015-09-18 | 2016-03-02 | 中央民族大学 | Full duplex multiple access instant messaging terminal based on big dipper short message |
| CN106789212A (en) * | 2016-12-12 | 2017-05-31 | 重庆金美通信有限责任公司 | A kind of method that utilization Big Dipper short message channel intelligently opens radio station network |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183743A (en) * | 2017-12-28 | 2018-06-19 | 江苏星宇芯联电子科技有限公司 | The Beidou communication system for being used for transmission voice, picture based on soft compressed encoding |
| CN108183743B (en) * | 2017-12-28 | 2023-12-08 | 江苏星宇芯联电子科技有限公司 | Beidou communication system for transmitting voice and pictures based on soft compression coding |
| CN109936823A (en) * | 2019-04-02 | 2019-06-25 | 西安极蜂天下信息科技有限公司 | Communication means and device |
| CN114268912A (en) * | 2020-09-16 | 2022-04-01 | 北京汇美电子技术有限公司 | Beidou mountain and sea communication system |
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Application publication date: 20171215 |