CN201365250Y - Special satellite communication modulator-demodulator - Google Patents
Special satellite communication modulator-demodulator Download PDFInfo
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- CN201365250Y CN201365250Y CNU2009201016815U CN200920101681U CN201365250Y CN 201365250 Y CN201365250 Y CN 201365250Y CN U2009201016815 U CNU2009201016815 U CN U2009201016815U CN 200920101681 U CN200920101681 U CN 200920101681U CN 201365250 Y CN201365250 Y CN 201365250Y
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The utility model discloses a special satellite communication modulator-demodulator and relates to a communication channel transmission communicator based on an SCPC/DAMA system in the field of satellite communication; the special satellite communication modulator-demodulator is composed of a monitoring unit, an intermediate frequency unit, a base band modulating module, a base band demodulating module and a power supply and the like. The working parameters of the modulator-demodulator is changed and the working state of the modulator-demodulator is displayed by the matching control of a key board and a liquid crystal display, so as to realize networking application of the SCPC/DAMA system; the modulator-demodulator has the advantages of multiple modes, multiple rate, short synchronous time, high integrating time, stable and reliable property, light weight, low power consumption, simple structure and the like, and is particularly suitable for the modulator-demodulator in the SCPC/DAMA system.
Description
Technical field
The utility model relates to a kind of specific satellite communication modem in the satellite communication field, is specially adapted to as the modulator-demodulator in the SCPC/DAMA satellite communication system.
Background technology
Because characteristics such as satellite communication broad covered area, communication distance are far away, networking flexibility, mobility are superior, the range of application of satellite communication is more and more wide, satellite communication networking mode based on SCPC/DAMA has obtained extensive use, this networking mode flexible, that resource utilization is high is had higher requirement to modulator-demodulator, becomes the urgent technical problem that solves of satellite communication.
Summary of the invention
The purpose of this utility model be to avoid the weak point in the above-mentioned background technology and provide a kind of have the burst function carry out modulation, can be under than rugged environment (10 ℃～55 ℃) condition the specific satellite communication modem of operate as normal, the utility model also has multi-mode, many speed, lock in time weak point, integrated degree height, characteristics such as stable and reliable for performance, in light weight, low in energy consumption, simple in structure.
The purpose of this utility model is achieved in that it is made up of monitoring unit 1, keypad 2, LCD 3, power supply 4, baseband modulation module 5, base band demodulating module 6, intermediate frequency unit 7.Wherein intermediate frequency unit 7 goes into to hold 1 pin to be connected with outside L frequency range intermediate frequency input port A, intermediate frequency unit 7 goes out end 2 pin and is connected with L frequency range medium frequency output end mouth B, intermediate frequency unit 7 is gone into end 5 pin and is gone out to hold 5 pin to link to each other by data wire and monitoring unit 1, intermediate frequency unit 7 is gone into end 3 pin and is gone out to hold 2 pin to be connected with baseband modulation module 5, intermediate frequency unit 7 goes out end 4 pin and goes into to hold 1 pin to be connected with base band demodulating module 6, baseband modulation module 5 is gone into end 3 pin and is connected with external data source input port C, baseband modulation module 5 is gone into end 1 pin and is gone out to hold 3 pin to link to each other by data wire and monitoring unit 1, base band demodulating module 6 goes out end 2 pin and is connected with external data source output port D, base band demodulating module 6 is gone into end 3 pin and is gone out to hold 3 pin to link to each other by data wire and monitoring unit 1, monitoring unit 1 goes out end 4 pin and goes into to hold 1 pin to be connected by data wire and LCD 3, going into end 2 pin goes out to hold 1 pin to be connected by data wire and keypad 2, monitoring unit 1 is come in and gone out and is held 1 pin to be connected with outside RS-485 interface E port by data wire, and the corresponding power end with each parts of power supply 4 outbound ports+V voltage end also connects.
The purpose of this utility model can also reach by following measure:
The utility model baseband modulation module 5 is by information burst processing module 8, channel encoder 9, forming filter 10, D/A converter 11, low pass filter 12 is formed, wherein information burst processing module 8 goes into to hold 1 pin to be connected with external data source input port C, information burst processing module 8 goes out end 2 pin and goes into to hold 1 pin to be connected with channel encoder 9, channel encoder 9 goes out end 2 pin and goes into to hold 1 pin to be connected with forming filter 10, forming filter 10 goes out end 2 pin and goes into to hold 1 pin to be connected with D/A converter 11, D/A converter 11 goes out end 2 pin and goes into to hold 1 pin to be connected with low pass filter 12, low pass filter 12 goes out end 2 pin and goes into to hold 3 pin to be connected with intermediate frequency unit 7, and end 3 pin that go out of monitoring unit 1 are connected with end 3 pin of going into of forming filter 10; Information burst processing module 8, channel encoder 9, D/A converter 11 are respectively gone into end 3 pin and are gone out end+V voltage end with power supply 4 and be connected, respectively go into to hold 4 pin earth terminals; Forming filter 10 is gone into end 4 pin and is gone out end+V voltage end with power supply (4) and be connected, go into to hold 5 pin earth terminals.
The utility model base band demodulating module 6 is by digital down converter 13, matched filter 14, digital down converter 15, signal detector 16, bit timing recovery device 17, carrier wave restorer 18, channel decoder 19 is formed, wherein digital down converter 13 goes into to hold 1 pin and intermediate frequency unit 7 to go out to hold 4 pin to be connected, digital down converter 13 goes out end 2 pin and goes into to hold 1 pin to be connected with matched filter 14, matched filter 14 goes out end 2 pin and goes into to hold 1 pin to be connected with digital down converter 15, digital down converter 15 goes out end 2 pin and goes into to hold 1 pin to be connected with signal detector 16, digital down converter 15 is gone into end 3 pin and is gone out to hold 2 pin to be connected with carrier wave restorer 18, regularly restorer 17 goes out to hold 2 pin and carrier wave restorer 18 to go into to hold 1 pin to be connected, regularly restorer 17 goes out to hold 3 pin and channel decoder 19 to go into to hold 1 pin to be connected, channel decoder 19 goes out end 2 pin and is connected with external data source output port D, and end 3 pin that go out of monitoring unit 1 are connected with end 4 pin of going into of timing restorer 17; Digital down converter 13, matched filter 14, digital down converter 15, signal detector 16, bit timing recovery device 17, carrier wave restorer 18, channel decoder 19 are respectively gone into end 5 pin and are gone out end+V voltage end with power supply 4 and be connected, and respectively go into to hold 6 pin earth terminals.
The utility model is compared with background technology has following advantage:
1. the utility model is that a kind of baseband modulation module 5, base band demodulating module 6 of adopting constitutes the modulator-demodulator that possesses the burst function, selection by mode of operation, can be operated in burst mode or non-burst mode, possess the data activation function when working in burst mode.The utlity model has characteristics such as data rate and IF-FRE, modulation system be variable, possess perfect monitoring function simultaneously, therefore in satellite communication system, obtained using widely.
2. the integrated degree height of each circuit block of the utility model, low in energy consumption, the machine debugging workload is little, and is stable and reliable for performance, can be under than rugged environment (10 ℃～55 ℃) condition operate as normal.
3. the utility model adopts the standard profile structure, and is simple in structure, and compactness is installed, and cost is low, has application value.
Description of drawings
Fig. 1 is an electric functional-block diagram of the present utility model.
Fig. 2 is the electrical schematic diagram of the utility model baseband modulation module 5.
Fig. 3 is the electrical schematic diagram of the utility model base band demodulating module 6.
Embodiment
Referring to figs. 1 through Fig. 3, the utility model is made up of supervisory circuit 1, keypad 2, LCD 3, power supply 4, intermediate frequency unit 7, baseband modulation module 5, base band demodulating module 6.Wherein supervisory circuit 1 is come in and gone out and is held 1 pin to be connected with the outer monitoring system by the RS-485 interface, be used to implement monitoring and control to this machine, supervisory circuit 1 is gone into end 2 pin and is gone out to hold 1 pin to be connected with keypad 2, by button operation modification of this machine or the state of this machine of monitoring, and by going out LCD 3 demonstrations that end 4 pin are connected with supervisory circuit 1, supervisory circuit 1 goes out end 5 pin and goes into to hold 5 pin to be connected with intermediate frequency unit 7, be used to control the frequency change of medium-frequency receiving and sending local vibration source and the power level of intermediate frequency output signal, and detect its operating state, supervisory circuit 1 goes out end 3 pin and goes into to hold 1 pin to be connected with baseband modulation module 5, supervisory circuit 1 goes out end 3 pin and goes into to hold 3 pin to be connected with base band demodulating module 6, be used to control the information rate of this machine, running parameter such as mode of operation and modulation system, and detect its operating states such as signal to noise ratio, supervisory circuit 1 its effect is exactly an operate as normal of controlling this machine by these controls and monitoring port, and embodiment adopts commercially available C8051F023 type dedicated cpu integrated circuit, the 74LVC4245A type, EPM 7064STI44-7 type application-specific integrated circuit (ASIC), DS13C887 type clock circuit, MAX489EPD485 type interface circuit is made.LCD 3 embodiment adopt RICH24201-3 type English display liquid crystal to make.Keypad 2 embodiment adopt commercially available Ro button to make.
The utility model baseband modulation module 5 is made up of channel encoder 9, forming filter 10, D/A converter 11, low pass filter 12.The electric principle connection line of embodiment baseband modulation module 5 as shown in Figure 2.Wherein channel encoder 9 its effects are differential coding, convolutional encodings of finishing data, forming filter 10 its effects are base band shapings of finishing coding back data, 11 its effects of D/A converter are that the signal after being shaped is carried out the D/A conversion, low pass filter 12 is used for the harmonic component of the signal spectrum that filtering digital processing process produces.Embodiment channel encoder 9, forming filter 10 each functional modules adopt a slice EP2C35F484I8 type FBGA chip manufacturing, and embodiment D/A converter 11 adopts two AD9762 type D/A chip manufacturings, and embodiment low pass filter 12 adopts the LC filter.
The utility model base band demodulating module 6 is made up of digital down converter 13, matched filter 14, digital down converter 15, signal detector 16, timing restorer 17, carrier wave restorer 18, channel decoder 19.The electric principle connection line of embodiment base band demodulating module 6 as shown in Figure 3.Wherein digital down converter 13,15 its effects are to carry out the orthogonal digital down-conversion to received signal, matched filter 14 its effects are Waveform Matching of finishing to received signal, signal detector 16 its effects are to judge having or not of signal, regularly restorer 17 its effects are the adjustment by the bit timing track loop, obtain the optimum sampling point of signal at receiving terminal, 18 its effects of carrier wave restorer are to finish the carrier wave of coherent demodulation to recover, and channel decoder 19 its effects are the data of baseband demodulation output to be carried out error-correcting decoding handle.Embodiment digital down converter 13, matched filter 14, digital down converter 15, signal detector 16, timing restorer 17, carrier wave restorer 18, channel decoder 19 each functional modules all adopt a slice EP2C35F484I8 type monolithic FBGA chip manufacturing.
4 its effects of the utility model power supply provide parts direct-current working volts at different levels, and embodiment adopts DLA50H type customization power supply to make, and its output+V voltage is+5 volts.
The concise and to the point operation principle of the utility model is as follows: the utility model is a full-duplex communication device, comprises 6 two separate functional units of baseband modulation module 5 and base band demodulating module.Export modulated intermediate frequency signal after the digital signal process chnnel coding of 5 inputs of baseband modulation module and the intermediate frequency Modulation; The digital information that output is made a start after the intermediate-freuqncy signal process intermediate frequency demodulation that base band demodulating module 6 is exported low-converter, the channel decoding.Each parts of the utility model have all adopted modularity design technology, constitute to have the corresponding units of standalone feature.
In the utility model baseband modulation module 5 and base band demodulating module 6 courses of work, the external data source input signal at first enters baseband modulation module 5,5 pairs of input signals of baseband modulation module carry out chnnel coding and base band shaping, and send intermediate frequency unit 7 to carry out intermediate frequency Modulation the data behind the base band shaping, the intermediate-freuqncy signal output after intermediate frequency unit 7 will be modulated.In addition, intermediate frequency unit 7 receives the intermediate-freuqncy signal of outside input, and the intermediate-freuqncy signal of input is carried out quadrature demodulation, send base band demodulating module 6 zero intermediate frequency signals after the demodulation then, the complex baseband signal of 6 pairs of inputs of base band demodulating module carries out demodulation, and the data after the demodulation are exported.In the communication process, supervisory circuit 1 is finished the frequency selection of medium-frequency receiving and sending local vibration source, the power level setting of intermediate frequency output signal, the setting of modulation parameter, the functions such as detection of this machine work signal to noise ratio.
Mounting structure of the present utility model is as follows: complete machine adopts standard 1U cabinet, cabinet inside adopts modular construction, each module all adopts independently the circuit Denso in printed board among Fig. 1 to Fig. 3, printed board is installed in the standard 1U cabinet, machine shape is of a size of 482.6 millimeters * 44 millimeters * 420 millimeters, in the cabinet both sides rail plate can be installed, the cabinet front portion is equipped with LCD 3, keypad 2 and indicator light, the cabinet rear portion is equipped with power supply 4 sockets, intermediate frequency input port A socket, medium frequency output end mouth B socket, external data source input port C socket, external data source output port D socket, and standard RS-485 control interface E far away socket, the assembly cost utility model.
Claims (3)
1. specific satellite communication modem, it comprises monitoring unit (1), keypad (2), LCD (3), power supply (4), intermediate frequency unit (7), it is characterized in that: also comprise baseband modulation module (5), base band demodulating module (6) is formed, wherein intermediate frequency unit (7) goes into to hold 1 pin to be connected with outside L frequency range intermediate frequency input port A, intermediate frequency unit (7) goes out end 2 pin and is connected with L frequency range medium frequency output end mouth B, intermediate frequency unit (7) is gone into end 5 pin and is gone out to hold 5 pin to link to each other by data wire and monitoring unit (1), intermediate frequency unit (7) is gone into end 3 pin and is gone out to hold 2 pin to be connected with baseband modulation module (5), intermediate frequency unit (7) goes out end 4 pin and goes into to hold 1 pin to be connected with base band demodulating module (6), baseband modulation module (5) is gone into end 3 pin and is connected with external data source input port C, baseband modulation module (5) is gone into end 1 pin and is gone out to hold 3 pin to link to each other by data wire and monitoring unit (1), base band demodulating module (6) goes out end 2 pin and is connected with external data source output port D, base band demodulating module (6) is gone into end 3 pin and is gone out to hold 3 pin to link to each other by data wire and monitoring unit (1), monitoring unit (1) goes out end 4 pin and goes into to hold 1 pin to be connected by data wire and LCD (3), going into end 2 pin goes out to hold 1 pin to be connected by data wire and keypad (2), monitoring unit (1) is come in and gone out and is held 1 pin to be connected with outside RS-485 interface E port by data wire, and power supply (4) outbound port+corresponding power end with each parts of V voltage end also connects.
2. specific satellite communication modem according to claim 1, it is characterized in that: baseband modulation module (5) comprises information burst processing module (8), channel encoder (9), forming filter (10), D/A converter (11), low pass filter (12), wherein information burst processing module (8) goes into to hold 1 pin to be connected with external data source input port C, information burst processing module (8) goes out end 2 pin and goes into to hold 1 pin to be connected with channel encoder (9), channel encoder (9) goes out end 2 pin and goes into to hold 1 pin to be connected with forming filter (10), forming filter (10) goes out end 2 pin and goes into to hold 1 pin to be connected with D/A converter (11), D/A converter (11) goes out end 2 pin and goes into to hold 1 pin to be connected with low pass filter (12), low pass filter (12) goes out end 2 pin and goes into to hold 3 pin to be connected with intermediate frequency unit (7), and end 3 pin that go out of monitoring unit (1) are connected with end 3 pin of going into of shaping filter (10); Information burst processing module (8), channel encoder (9), D/A converter (11) are respectively gone into end 3 pin and are gone out end+V voltage end with power supply (4) and be connected, respectively go into to hold 4 pin earth terminals; Forming filter (10) is gone into end 4 pin and is gone out end+V voltage end with power supply (4) and be connected, go into to hold 5 pin earth terminals.
3. specific satellite communication modem according to claim 1 and 2, its feature also is: base band demodulating module (6) comprises digital down converter (13), matched filter (14), digital down converter (15), signal detector (16), bit timing recovery device (17), carrier wave restorer 18), channel decoder (19), wherein digital down converter (13) goes into to hold 1 pin and intermediate frequency unit (7) to go out to hold 4 pin to be connected, digital down converter (13) goes out end 2 pin and goes into to hold 1 pin to be connected with matched filter (14), matched filter (14) goes out end 2 pin and goes into to hold 1 pin to be connected with digital down converter (15), digital down converter (15) goes out end 2 pin and goes into to hold 1 pin to be connected with signal detector (16), digital down converter (15) is gone into end 3 pin and is gone out to hold 2 pin to be connected with carrier wave restorer (18), regularly restorer (17) goes out to hold 2 pin and carrier wave restorer (18) to go into to hold 1 pin to be connected, regularly restorer (17) goes out to hold 3 pin and channel decoder (19) to go into to hold 1 pin to be connected, channel decoder (19) goes out end 2 pin and is connected with external data source output port D, and end 3 pin that go out of monitoring unit (1) are connected with end 4 pin of going into of timing restorer (17); Digital down converter (13), matched filter (14), digital down converter (15), signal detector (16), bit timing recovery device (17), carrier wave restorer (18), channel decoder (19) are respectively gone into end 5 pin and are gone out end+V voltage end with power supply (4) and be connected, and respectively go into to hold 6 pin earth terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201016815U CN201365250Y (en) | 2009-02-27 | 2009-02-27 | Special satellite communication modulator-demodulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201016815U CN201365250Y (en) | 2009-02-27 | 2009-02-27 | Special satellite communication modulator-demodulator |
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| CN201365250Y true CN201365250Y (en) | 2009-12-16 |
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| CNU2009201016815U Expired - Fee Related CN201365250Y (en) | 2009-02-27 | 2009-02-27 | Special satellite communication modulator-demodulator |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647596A (en) * | 2013-12-31 | 2014-03-19 | 北京国电通网络技术有限公司技术服务中心 | Double-receiving and double-transmitting modulator-demodulator of satellite |
| CN106027442A (en) * | 2016-05-03 | 2016-10-12 | 中国电子科技集团公司第五十四研究所 | Modem based disperse pilots |
| WO2017063455A1 (en) * | 2015-10-16 | 2017-04-20 | 深圳市华讯方舟卫星通信有限公司 | Intelligent terminal and method and device for displaying satellite signal quality thereof |
| CN104407532B (en) * | 2014-09-30 | 2017-08-11 | 清华大学 | Digital demodulator based on industry control machine platform |
| CN107707274A (en) * | 2017-10-10 | 2018-02-16 | 中国电子科技集团公司第五十四研究所 | A kind of wide interval frequency hopping antijam communication device |
| CN107888276A (en) * | 2017-11-14 | 2018-04-06 | 中国电子科技集团公司第五十四研究所 | A kind of Multiband-multimode modulation-demodulation device |
| CN113114347A (en) * | 2021-06-15 | 2021-07-13 | 凯睿星通信息科技(南京)股份有限公司 | Method and system for automatically matching modem operating modes |
-
2009
- 2009-02-27 CN CNU2009201016815U patent/CN201365250Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647596A (en) * | 2013-12-31 | 2014-03-19 | 北京国电通网络技术有限公司技术服务中心 | Double-receiving and double-transmitting modulator-demodulator of satellite |
| CN104407532B (en) * | 2014-09-30 | 2017-08-11 | 清华大学 | Digital demodulator based on industry control machine platform |
| WO2017063455A1 (en) * | 2015-10-16 | 2017-04-20 | 深圳市华讯方舟卫星通信有限公司 | Intelligent terminal and method and device for displaying satellite signal quality thereof |
| CN106027442A (en) * | 2016-05-03 | 2016-10-12 | 中国电子科技集团公司第五十四研究所 | Modem based disperse pilots |
| CN106027442B (en) * | 2016-05-03 | 2019-05-07 | 中国电子科技集团公司第五十四研究所 | Modem based on scattered pilot |
| CN107707274A (en) * | 2017-10-10 | 2018-02-16 | 中国电子科技集团公司第五十四研究所 | A kind of wide interval frequency hopping antijam communication device |
| CN107707274B (en) * | 2017-10-10 | 2019-06-07 | 中国电子科技集团公司第五十四研究所 | A kind of wide interval frequency hopping antijam communication device |
| CN107888276A (en) * | 2017-11-14 | 2018-04-06 | 中国电子科技集团公司第五十四研究所 | A kind of Multiband-multimode modulation-demodulation device |
| CN107888276B (en) * | 2017-11-14 | 2020-05-08 | 中国电子科技集团公司第五十四研究所 | Multi-frequency band multi-mode modulation and demodulation device |
| CN113114347A (en) * | 2021-06-15 | 2021-07-13 | 凯睿星通信息科技(南京)股份有限公司 | Method and system for automatically matching modem operating modes |
| CN113114347B (en) * | 2021-06-15 | 2021-09-14 | 凯睿星通信息科技(南京)股份有限公司 | Method and system for automatically matching modem operating modes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: ChinaComm System Co., Ltd. Assignor: No.54 Inst., China Electronic Sci. & Tech. Group Co. Contract record no.: 2010130000119 Denomination of utility model: Special satellite communication modulator-demodulator Granted publication date: 20091216 License type: Exclusive License Record date: 20101216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091216 Termination date: 20170227 |