CN2687956Y - Doppler frequency shift correcting device for high speed mobile satellite satellite communication - Google Patents

Doppler frequency shift correcting device for high speed mobile satellite satellite communication Download PDF

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Publication number
CN2687956Y
CN2687956Y CN 200420015737 CN200420015737U CN2687956Y CN 2687956 Y CN2687956 Y CN 2687956Y CN 200420015737 CN200420015737 CN 200420015737 CN 200420015737 U CN200420015737 U CN 200420015737U CN 2687956 Y CN2687956 Y CN 2687956Y
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China
Prior art keywords
pin
signal
doppler frequency
duplexer
frequency
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Expired - Lifetime
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CN 200420015737
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Chinese (zh)
Inventor
刘学林
于志坚
裴文端
翟政安
杨志国
孙宝升
刘瑞成
杨永亮
高焕英
崔平
杨锁强
沈成圣
付琳莉
刘素玲
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CETC 54 Research Institute
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CETC 54 Research Institute
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Abstract

The utility model discloses a Doppler frequency shift correcting device for high speed mobile satellite communication, which relates to Doppler frequency shift correction for communication signal in the communication field. The utility model comprises the analog source of dynamic signal, a pilot receiver, a mobile terminal and a duplexer. The Doppler frequency shift correcting device for high speed mobile satellite communication takes a maritime satellite as the transmission means and calculates the Doppler frequency shift generated by the in-orbit high speed motion of the real mobile terminal through the number of the orbits of high speed motion of the satellite communication terminal. Adopting a spectrum estimation method to extract the Doppler frequency shift and through rebuilding and correcting to the mobile terminal, the mobile terminal can achieve the purpose of normal communication by the help of the maritime satellite under the situation of high speed motion. The utility model has the advantages of wide communication covering surface, long communication time, convenient use, high integration degree, small size, light weight, low cost, etc, and the Doppler frequency shift correcting device for high speed mobile satellite communication is in particular suitable for data transmission of high speed mobile satellite communication.

Description

Doppler frequency-shift means for correcting in the high-speed mobile satellite communication
Technical field
The utility model relates to the Doppler frequency-shift means for correcting in a kind of high-speed mobile satellite communication in the communications field, is specially adapted to the transfer of data in the high-speed mobile satellite communication.
Background technology
The communication coverage rate of the high-speed mobile satellite communication system of using is narrower at present, and it is many to set up the communication relay station number, and communication duration is short, can't carry out the transfer of data of long-time continuous, and communication equipment cost height.
Summary of the invention
The purpose of this utility model is to avoid the weak point in the above-mentioned background technology and Doppler frequency-shift means for correcting in the long high-speed mobile satellite communication of a kind of broad covered area of communicating by letter, communication duration is provided.Characteristics such as and the utlity model has integrated degree height, volume is little, and is in light weight, and it is convenient to use, and cost is low.
The purpose of this utility model is achieved in that it is made up of Dynamic Signal dummy source 1, pilot receiver 2, portable terminal 3, duplexer 4, antenna 5 and power supply 11.Dynamic Signal dummy source 1 is made of simulation computer 6 and frequency converter 7.Wherein simulation computer 6 data-signal output ports 1 are connected with frequency converter 7 data-signal input ports 1, frequency converter 7 radiofrequency signals go out inbound port 2 and go out inbound port 2 with duplexer 4 radiofrequency signals and be connected, frequency converter 7 radiofrequency signal output ports 3 are connected with pilot receiver 2 radio-frequency (RF) signal input end mouths 1, pilot receiver 2 output ports 2 are connected with portable terminal 3 local oscillator reference signal input ports 2, portable terminal 3 radiofrequency signals discrepancy port one goes out inbound port 3 with duplexer 4 radiofrequency signals and is connected, duplexer 4 radiofrequency signals discrepancy port one goes out inbound port with antenna 5 radiofrequency signals and is connected, and power supply 11 goes out the corresponding power end with each parts of end+V voltage end and connects.
The purpose of this utility model can also reach by following measure:
Simulation computer 6 is made of PC microcomputer 8 in the utility model Dynamic Signal dummy source 1, frequency converter 7 is made of frequency conversion link module 9, pilot receiver 2 is made of spectrum estimation module 10, PC microcomputer 8 data wire output terminals A 1 are connected with the C2 pin with frequency conversion link module 9 data wire input C1 respectively with the A2 pin, frequency conversion link module 9 radiofrequency signals are come in and gone out and are held A1, A2, B1 and B2 pin are come in and gone out with duplexer 4 radiofrequency signals respectively and are held A2, A3, B1 is connected with the B2 pin, frequency conversion link module 9 radiofrequency signal output D pin are connected with spectrum estimation module 10 radio-frequency (RF) signal input end A pin, spectrum estimation module 10 output B1 pin are connected with the B2 pin with portable terminal 3 local oscillator reference source input B1 pin respectively with the B2 pin, portable terminal 3 radiofrequency signals are come in and gone out and are held A pin and duplexer 4 radiofrequency signals discrepancy end B3 pin to be connected, duplexer 4 radiofrequency signals are come in and gone out and are held A1 pin and antenna 5 radiofrequency signals discrepancy end K pin to be connected, frequency conversion link module 9, spectrum estimation module 10, portable terminal 3, duplexer 4 is respectively gone into to hold the V1 pin to go out end+V voltage end with power supply 11 respectively and is connect, respectively go into to hold the V2 pin respectively with the ground end and connect, PC microcomputer 8 power supplys go into to hold V3 pin external AC power supply～V end.
The utility model has been compared following advantage with background technology:
1. the utility model adopts Dynamic Signal dummy source 1 and pilot receiver 2 by marine satellite transporting speech and data message, forms the marine satellite mobile communication system, and therefore, it has the communication broad covered area, uses characteristics such as convenient, that cost is low.
2. the utility model adopts Dynamic Signal dummy source 1, utilize the orbital tracking of high-speed mobile satellite communication terminal to simulate the Doppler frequency-shift of L-band portable terminal uplink and downlink signal in real time, for the high-speed mobile satellite communication terminal provides its dynamic channel in rail high-speed motion process, create condition for the development of system, reduced experimentation cost.
3. the utility model adopts pilot receiver 2, extract descending Doppler frequency-shift with the spectrum estimation approach, by control portable terminal 3 reference frequencies this frequency shift value is added then, offset, realize that the Doppler frequency shift of downstream signal is proofreaied and correct with the signal Doppler frequency shift that receives Traffic Channel; Utilize the down-Doplet frequency shift value, calculate the up-Doppler frequency shift value, the up reference frequency of control terminal after anti-phase, signal Doppler frequency shift to reverse link traffic channel carries out precorrection, making the signal frequency that arrives satellite repeater is normal value, thereby the Doppler frequency shift of realizing upward signal is proofreaied and correct.Can realize the transfer of data of high-speed mobile satellite communication terminal by above-mentioned Doppler frequency-shift bearing calibration by portable terminal 3 to the center of accusing.All devices of the utility model all adopt large scale integrated circuit to make, and have integrated degree height, volume is little, in light weight, uses characteristics such as convenient.
Description of drawings
Fig. 1 is an electric functional-block diagram of the present utility model.
Fig. 2 is the electrical schematic diagram of Dynamic Signal dummy source 1 and pilot receiver 2 in the utility model.
Embodiment
With reference to Fig. 1, Fig. 2, the utility model is made up of Dynamic Signal dummy source 1, pilot receiver 2, portable terminal 3, duplexer 4, antenna 5 and power supply 11.Wherein Dynamic Signal dummy source 1 is made up of simulation computer 6 and frequency converter 7.Constitute the Doppler frequency-shift signal generator by simulation computer 6 in the Dynamic Signal dummy source 1 and frequency converter 7, constitute Traffic Channel by pilot receiver 2, portable terminal 3, duplexer 4 and antenna 5.
Simulation computer 6 is made of PC microcomputer 8 in the utility model Dynamic Signal dummy source 1, and frequency converter 7 is made of frequency conversion link module 9, and pilot receiver 2 is made of spectrum estimation module 10.Fig. 2 is the electrical schematic diagram of simulation computer 6 in the utility model, frequency converter 7 and spectrum estimation module 10, and presses Fig. 2 connection line.
Duplexer 4 radiofrequency signals are come in and gone out and are held A1 pin and antenna 5 discrepancy ends to be connected among Fig. 2, radiofrequency signal output terminals A 2, B1 pin and frequency conversion link module 9 radio-frequency (RF) signal input end A1, the B1 pin connects, radio-frequency (RF) signal input end A3, B2 pin and frequency conversion link module 9 radiofrequency signal output terminals A 2, the B2 pin connects, radiofrequency signal is come in and gone out and is held B3 pin and portable terminal 3 radiofrequency signals discrepancy end A pin to be connected, duplexer 4 its effects are to separate upward signal and downstream signal, separate on the back, add Doppler frequency-shift in the downstream signal input Dynamic Signal dummy source 1, again through duplexer 4 will have Doppler frequency-shift on, synthetic one road signal input aerial 5 of downstream signal sends; Frequency conversion link module 9 data-signal input C1, C2 pin and PC microcomputer 8 data-signal output terminals A 1, the A2 pin connects, radiofrequency signal output B3 pin is connected with spectrum estimation module 10 radio-frequency (RF) signal input end A pin, 9 its effects of frequency conversion link module are to receive descending L-band radiofrequency signal by radio-frequency (RF) signal input end B1 pin from duplexer 4, receive Doppler frequency-shift by data input pin C1 and C2 pin in real time by PC microcomputer 8, just the radiofrequency signal of the L-band mode of subtracting each other by mixing generates an intermediate-freuqncy signal then, this radiofrequency signal again with the local vibration source mixing addition of carrying Doppler frequency shift, output has contained the radiofrequency signal of Doppler frequency shift amount, give portable terminal 3 by radiofrequency signal output B2 pin through duplexer 4 then, give spectrum estimation module 10 by radiofrequency signal output D pin, the up L-band radiofrequency signal that frequency conversion link module 9 receives from portable terminal 3 from duplexer 4 by radio-frequency (RF) signal input end A1 pin, to utilize up-Doppler frequency shift value that the down-Doplet frequency shift value dopes by the mixing mode L-band upward signal that inversely adds then, deliver to antenna 5 by duplexer 4 again and launch, offset with the signal Doppler frequency shift of reverse link traffic channel; 8 its effects of PC microcomputer are to utilize the orbital tracking of high-speed mobile satellite communication terminal to calculate its Doppler frequency-shift at the L-band downstream signal of rail high-speed motion generation in real time, give the data input pin C1 and the C2 pin of frequency conversion link module 9 by data output end A1 and A2 pin; Spectrum estimation module 10 radio-frequency (RF) signal input end A pin are connected with frequency conversion link module 9 radiofrequency signal output D pin, local oscillator reference signal output B1 is connected with the B2 pin with portable terminal 3 local oscillator reference signal input B1 respectively with the B2 pin, 10 its effects of spectrum estimation module are the algorithms that adopt spectrum to estimate, TDM signal extraction Doppler frequency-shift information according to maritime satellite system, by control portable terminal 3 reference frequencies this frequency shift value is added then, offset with the signal Doppler frequency shift that receives Traffic Channel, realize that the Doppler frequency shift of downstream signal is proofreaied and correct; Utilize the down-Doplet frequency shift value, calculate the up-Doppler frequency shift value, the up reference frequency of control terminal after anti-phase, signal to reverse link traffic channel carries out Doppler frequency shift precorrection, making the signal that arrives satellite repeater is normal signal, thereby the Doppler frequency shift of realizing upward signal is proofreaied and correct; Portable terminal 3 local oscillator reference signal input B1 are connected with the B2 pin with spectrum estimation module 10 local oscillator reference signal output B1 with the B2 pin, radiofrequency signal is come in and gone out and is held A pin and duplexer 4 radiofrequency signals discrepancy end B3 pin to be connected, portable terminal 3 its effects are with the transmitting-receiving local oscillator reference frequency source that has carried Doppler frequency-shift that receives, go control transmitting-receiving local oscillator, carrying out mixing with the up-downgoing radiofrequency signal respectively again subtracts each other, thereby offset the signal Doppler frequency shift of downlink traffic channel, signal to reverse link traffic channel carries out Doppler frequency shift precorrection, and making the signal that arrives satellite repeater is normal signal; Power supply 11 effects provide the DC power supply that each parts uses, and it converts alternating current 220V/50Hz civil power to low-voltage dc power supply, and output+V voltage end voltage is+5V voltage.Embodiment PC microcomputer 8 adopts commercially available general PC to make, frequency conversion link module 9 adopts commercially available general integrated frequency-variable module to make, spectrum estimation module 10 adopts commercially available TMS320C54 integrated circuit (IC)-components to make, portable terminal 3 adopts the self-control of marine satellite standard terminal to transform and forms, duplexer 4 adopts commercially available universal duplexer device self-control to form, antenna 5 adopts the intelligent phased antenna that shakes of commercially available marine satellite standard to make, and power supply 11 adopts commercially available multiple power source module making.
The concise and to the point operation principle of the utility model is as follows: Dynamic Signal dummy source 1 is in order to simulate the dynamic channel of high-speed mobile satellite communication terminal in rail high-speed motion process, a passage that produces Doppler frequency shift to be provided in the middle of satellite and improved portable terminal 3.Dynamic Signal dummy source 1 is made up of PC microcomputer 8 and frequency conversion link module 9, the operation principle of PC microcomputer 8 is to utilize the orbital tracking of high-speed mobile satellite communication terminal to calculate the Doppler frequency-shift of the L-band downstream signal that the high-speed mobile satellite communication terminal produces at the rail high-speed motion in real time, gives the data input pin C1 of frequency conversion link module 9 and the C2 pin control signal as the local frequency synthesizer by data output end A1 and A2 pin.Frequency conversion link module 9 receives the L-band downstream signal by duplexer 4 from antenna 5, the mode of selecting suitable local frequency that the radiofrequency signal of L-band is subtracted each other by mixing then generates an intermediate-freuqncy signal, with the local frequency synthesizer mixing addition of carrying Doppler frequency shift, export the radiofrequency signal that has contained the Doppler frequency shift amount and give spectrum estimation module 10 again.The operation principle of spectrum estimation module 10 is with the spectrum estimation approach, the NCS TDM signal of maritime satellite system is extracted the Doppler frequency-shift of downstream signal as pilot signal, by control portable terminal 3 reference frequency sources this frequency shift value is added then, offset with the signal Doppler frequency shift that receives Traffic Channel, realize that the Doppler frequency shift of downstream signal is proofreaied and correct; Utilize downstream signal Doppler frequency shift value, calculate upward signal Doppler frequency shift value, after anti-phase, control portable terminal 3 up reference frequency sources, signal Doppler frequency shift to reverse link traffic channel carries out precorrection, making the signal frequency that arrives satellite repeater is normal value, thereby the Doppler frequency shift of realizing upward signal is proofreaied and correct.The operation principle of portable terminal 3 is to receive the transmitting-receiving local oscillator reference frequency source that has carried Doppler frequency-shift that spectrum estimation module 10 is sent here by local oscillation signal input B1 and B2 pin, go control transmitting-receiving local oscillator, carrying out mixing with the up-downgoing radiofrequency signal respectively again subtracts each other, thereby offset the signal Doppler frequency shift of downlink traffic channel, signal to reverse link traffic channel carries out Doppler frequency shift precorrection, and making the signal that arrives satellite repeater is normal signal.Duplexer 4 its effects are to separate upward signal and downstream signal, separate back uplink and downlink signal and add Doppler frequency-shift in the Dynamic Signal dummy source, will have synthetic one road signal of uplink and downlink signal of Doppler frequency-shift again through duplexer.
The utility model mounting structure is as follows: the utility model Fig. 1, circuit module in pilot receiver 2 among Fig. 2 and the frequency converter 7 is installed in respectively in two printed boards, two printed boards are installed in respectively in two 19 inches standard PC cases, connection line between two cabinets connects by cabinet back cable, corresponding display screen is installed on the front panel of each cabinet, control operation keyboard and mains switch, power input socket and input/output signal socket are installed, two standard PC cases and simulation computer 6 on each cabinet rear board, duplexer 4, portable terminal 3 is installed on the operating platform jointly.Antenna 5 is installed in outdoor place of not blocking, about 120 degree in azimuth, and about 15 degree in the elevation angle, are connected the assembly cost utility model towards the Pacific Province satellite with duplexer by cable.

Claims (2)

1. the Doppler frequency-shift means for correcting in the high-speed mobile satellite communication, it is by portable terminal (3), duplexer (4), antenna (5) and power supply (11) are formed, it is characterized in that also by Dynamic Signal dummy source (1), pilot receiver (2) is formed, Dynamic Signal dummy source (1) is made of simulation computer (6) and frequency converter (7), wherein simulation computer (6) data-signal output port 1 is connected with frequency converter (7) data-signal input port 1, frequency converter (7) radiofrequency signal goes out inbound port 2 and goes out inbound port 2 with duplexer (4) radiofrequency signal and be connected, frequency converter (7) radiofrequency signal output port 3 is connected with pilot receiver (2) radio-frequency (RF) signal input end mouth 1, pilot receiver (2) output port 2 is connected with portable terminal (3) local oscillation signal reference source input port 2, portable terminal (3) radiofrequency signal discrepancy port one goes out inbound port 3 with duplexer (4) radiofrequency signal and is connected, duplexer (4) radiofrequency signal discrepancy port one goes out inbound port with antenna (5) and is connected, and power supply (11) goes out the corresponding power end with each parts of end+V voltage end and connects.
2. the Doppler frequency-shift means for correcting in the high-speed mobile satellite communication according to claim 1, it is characterized in that simulation computer (6) is made of PC microcomputer (8) in the Dynamic Signal dummy source (1), frequency converter (7) is made of frequency conversion link module (9), pilot receiver (2) is made of spectrum estimation module (10), PC microcomputer (8) data wire output terminals A 1 is connected with the C2 pin with frequency conversion link module (9) data wire input C1 respectively with the A2 pin, frequency conversion link module (9) radiofrequency signal is come in and gone out and is held A1, A2, B1 and B2 pin are come in and gone out with duplexer (4) radiofrequency signal respectively and are held A2, A3, B1 is connected with the B2 pin, frequency conversion link module (9) radiofrequency signal output D pin is connected with spectrum estimation module (10) radio-frequency (RF) signal input end A pin, spectrum estimation module (10) output B1 pin is connected with the B2 pin with portable terminal (3) local oscillator reference source input B1 pin respectively with the B2 pin, portable terminal (3) radiofrequency signal is come in and gone out and is held A pin and duplexer (4) radiofrequency signal discrepancy end B3 pin to be connected, duplexer (4) radiofrequency signal is come in and gone out and is held A1 pin and antenna (5) radiofrequency signal discrepancy end K pin to be connected frequency conversion link module (9), spectrum estimation module (10), portable terminal (3), duplexer (4) respectively goes into to hold V 1Pin goes out end+V voltage end with power supply (11) respectively and connects, and respectively goes into to hold V 2Pin is respectively with the ground end and connect, and PC microcomputer (8) power supply goes into to hold V3 pin external AC power supply～V end.
CN 200420015737 2004-02-11 2004-02-11 Doppler frequency shift correcting device for high speed mobile satellite satellite communication Expired - Lifetime CN2687956Y (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010111863A1 (en) * 2009-03-31 2010-10-07 中兴通讯股份有限公司 Mobile terminal and adjusting method for local oscillating frequency of its uplink path
CN101959261A (en) * 2009-07-20 2011-01-26 中国移动通信集团公司 Signal selection method and equipment in high-speed moving scene
CN101958734A (en) * 2010-10-19 2011-01-26 京信通信系统（中国）有限公司 Integrated wireless coverage solution
CN101350680B (en) * 2008-09-10 2011-07-27 中国电子科技集团公司第五十四研究所 Simulator for multi-channel meteor trail channel
CN102932808A (en) * 2011-08-09 2013-02-13 鼎桥通信技术有限公司 High-speed scene signal sending method and repeater
CN113067622A (en) * 2021-02-25 2021-07-02 上海卫星工程研究所 Composite scene multi-source signal generation autonomous deviation correcting device and method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101350680B (en) * 2008-09-10 2011-07-27 中国电子科技集团公司第五十四研究所 Simulator for multi-channel meteor trail channel
WO2010111863A1 (en) * 2009-03-31 2010-10-07 中兴通讯股份有限公司 Mobile terminal and adjusting method for local oscillating frequency of its uplink path
CN101959261A (en) * 2009-07-20 2011-01-26 中国移动通信集团公司 Signal selection method and equipment in high-speed moving scene
CN101959261B (en) * 2009-07-20 2013-07-31 中国移动通信集团公司 Signal selection method and equipment in high-speed moving scene
CN101958734A (en) * 2010-10-19 2011-01-26 京信通信系统（中国）有限公司 Integrated wireless coverage solution
CN101958734B (en) * 2010-10-19 2014-03-26 京信通信系统（中国）有限公司 Integrated wireless coverage solution
CN102932808A (en) * 2011-08-09 2013-02-13 鼎桥通信技术有限公司 High-speed scene signal sending method and repeater
CN102932808B (en) * 2011-08-09 2015-04-22 鼎桥通信技术有限公司 High-speed scene signal sending method and repeater
CN113067622A (en) * 2021-02-25 2021-07-02 上海卫星工程研究所 Composite scene multi-source signal generation autonomous deviation correcting device and method
CN113067622B (en) * 2021-02-25 2022-08-12 上海卫星工程研究所 Composite scene multi-source signal generation autonomous deviation correcting device and method

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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: Hebei Shenzhou Satellite Communications Co., Ltd.

Assignor: No.54 Inst., China Electronic Sci. & Tech. Group Co.

Contract fulfillment period: 2008.12.1 to 2013.11.30

Contract record no.: 2008130000170

Denomination of utility model: Doppler frequency shift correcting device for high speed mobile satellite satellite communication

Granted publication date: 20050323

License type: Exclusive license

Record date: 20081211

LIC Patent licence contract for exploitation submitted for record

Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.12.1 TO 2013.11.30; CHANGE OF CONTRACT

Name of requester: HEBEI SHENZHOU SATELLITE COMMUNICATIONS CO., LTD.

Effective date: 20081211

CX01 Expiry of patent term
CX01 Expiry of patent term

Expiration termination date: 20140211

Granted publication date: 20050323