CN101212785A - Zonal moving body locating system - Google Patents
Zonal moving body locating system Download PDFInfo
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- CN101212785A CN101212785A CNA2006101616552A CN200610161655A CN101212785A CN 101212785 A CN101212785 A CN 101212785A CN A2006101616552 A CNA2006101616552 A CN A2006101616552A CN 200610161655 A CN200610161655 A CN 200610161655A CN 101212785 A CN101212785 A CN 101212785A
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- moving body
- zonal
- locating system
- body locating
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Abstract
The invention discloses a regional moving body location system. The location system is provided with at least four receiving base stations for transmission and reception of spread spectrum modulation in pseudo random code in location space; and a transmitter for transmission and reception of spread spectrum modulation in pseudo random code is arranged on a location object. The invention can measure a plurality of static and moving objects at the same time, and a base station can directly obtain the measuring result without communication transmission; due to adopting the spread spectrum transmission and reception system, the emission power and antenna size are greatly decreased; compared with a GPS system, the system of the invention has low initial and usage cost.
Description
One, technical field
The present invention relates to radio communication, range finding and location technology, particularly a kind of Zonal moving body locating system.
Two, background technology
The mobile object location is widely used.Chinese patent 00122805.6 discloses a kind of radio communication, range finding and area positioning system, and it is a kind of radio communication, range finding and area positioning system, belongs to the radio communication technology field.It is on the basis of original communication system, and the sinusoidal signal of setting up or a few low frequency is as framing signal.Framing signal is modulated, is launched high frequency carrier with former signal of communication, and receiver is to this composite signal demodulation.The phase change of framing signal is directly proportional with the distance of radio wave propagation, can find range and locate thus.It can realize range finding in communication process, under fixed base stations cooperates, realize zone location.This technology superpose on common radio platform signal of communication one or several low frequency signals obtain distance by extracting the low frequency signal transmission delay.Thereby realize communication and zone location.The subject matter of this system is: 1, the common radio platform adopts the fixed frequency emission, can not reliably locate thereby occur the signal extraction failure easily when being interfered; 2, can only cause and to locate otherwise can produce to disturb simultaneously to a target localization.
Three, summary of the invention
The object of the present invention is to provide a kind of can be simultaneously to a plurality of moving targets location, accurate positioning, interference-free Zonal moving body localization method and realization system thereof.
Realize that technical solution of the present invention is: a kind of Zonal moving body locating system, suitable at the regional level place is provided with the base station of 4 or 4 above location awares, signalization transmitter on Nei the mobile object at the regional level, transmitter emission be pseudo noise code through spread spectrum, because pseudo noise code is emission continuously in the fixed cycle, therefore, on the base station, produce if any synchronous same pseudo-random sign indicating number, the base station receives between the pseudo noise code sent on the mobile object and the pseudo noise code of itself and can have dislocation, this dislocation is owing to transmission delay causes, it has represented the distance between object and the base station.Just can realize the zone location of mobile object by a plurality of base station distance.
Principle of the present invention is a time-delay distance finding, by measuring the time delay that signal is propagated on four (or more than) known location, determine the distance of target to four (or more than) known location, measure distance according to these four (or more than), calculate the time synchronized deviation of Three-dimension Target position and target and known location.For a plurality of objects, the solution of system is to adopt different pseudo noise codes, realizes code division multiple access.Because this locate mode objectively is a kind of form of spread spectrum communication, the spreading gain that has pseudo noise code in the transmission channel, thereby antijamming capability is strong, and, because the power that transmits on each frequency is extremely low, thereby need not to apply for that frequency can directly use.
The present invention compared with prior art, its remarkable advantage is: 1, can measure a plurality of static and moving targets simultaneously; 2, measurement result need not communications and is directly obtained by the base station; 3, owing to adopt the spread spectrum emission to receive system, transmitting power and antenna size reduce significantly; 4, compare gps system, the initial cost and the use cost of this system are lower.
Four, description of drawings
Fig. 1 is a Zonal moving body locating system schematic diagram of the present invention.
Fig. 2 is a Zonal moving body locating system transmitter principle block diagram of the present invention.
Fig. 3 is a Zonal moving body locating system of the present invention base station theory diagram.
Five, embodiment
Describe the operation principle of the Zonal moving body locating system that proposes according to the present invention in detail below in conjunction with Fig. 1, Fig. 2, Fig. 3.
A kind of Zonal moving body locating system is no less than 4--6 with emission of pseudo noise code band spectrum modulation and the reception base station 1 that receives in the setting of space, location, and setting is with emission of pseudo noise code band spectrum modulation and the transmitter 2 that receives on the positioning object.
Receive the base station by connection low noise amplifier under the antenna, enter low-converter through the radiofrequency signal of band pass filter, through the frequency synthesizer decoding, the digital intermediate frequency of output enters digital signal processor, isolates the time-delay signal of pseudo noise code; Carrying out distance resolves.
Transmitter is by the digital medium-frequency signal of pseudo-random code generator output, and is synthetic through upconverter with the high-frequency signal of the modulation that is produced by frequency synthesizer, through band pass filter, power amplifier, antenna emission.
And import the positional information (longitude and latitude, highly) of each base station.On the object of need location transmitter is installed, transmitter is with object identification sign indicating number (different objects adopts the different identification sign indicating number), and the modulation pseudo noise code, launches through up-conversion and power circuit.Because the skyborne transmission delay of electric wave, elapsed time t1, t2, t3, t4 arrive base station 1, base station 2, base station 3, base station 4 respectively, the receiver of each base station principle is as shown in Figure 3 measured each time-delay, calculate distance R 1, R2, R3, the R4 of object to each base station, because the position of each base station is known, can determine the locus of this object, reach the object localization purpose.
Because different objects adopts different pseudo noise codes, base station receiver needs variant pseudo noise code is measured, and can finish the location of a plurality of objects.
Claims (4)
1. a Zonal moving body locating system is characterized in that: be no less than 4 with emission of pseudo noise code band spectrum modulation and the reception base stations [1] that receive in the setting of space, location, be provided with on the positioning object with the pseudo noise code band spectrum modulation and launch and the transmitter [2] that receives.
2. Zonal moving body locating system according to claim 1, it is characterized in that receiving the base station by connection low noise amplifier under the antenna, radiofrequency signal through band pass filter enters low-converter, decode through frequency synthesizer, the digital intermediate frequency of output enters digital signal processor, isolates the time-delay signal of pseudo noise code; Carrying out distance resolves.
3. Zonal moving body locating system according to claim 1, it is characterized in that the digital medium-frequency signal of transmitter by pseudo-random code generator output, synthetic with the high-frequency signal of the modulation that produces by frequency synthesizer through upconverter, through band pass filter, power amplifier, antenna emission.
4. Zonal moving body locating system according to claim 1, it is characterized in that receiving the base station is 4-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101616552A CN101212785A (en) | 2006-12-30 | 2006-12-30 | Zonal moving body locating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101616552A CN101212785A (en) | 2006-12-30 | 2006-12-30 | Zonal moving body locating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101212785A true CN101212785A (en) | 2008-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNA2006101616552A Pending CN101212785A (en) | 2006-12-30 | 2006-12-30 | Zonal moving body locating system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101526609B (en) * | 2009-03-27 | 2011-03-30 | 电子科技大学 | Matching locating method based on wireless channel frequency domain amplitude response |
| CN102854500A (en) * | 2012-08-20 | 2013-01-02 | 郭晓鹏 | Unidirectional wireless ranging method and unidirectional wireless ranging device for vehicles |
| CN103823229A (en) * | 2014-02-28 | 2014-05-28 | 上海交通大学 | Underwater positioning and navigation system and method based on DGPS |
| CN104125639A (en) * | 2014-07-21 | 2014-10-29 | 醴陵恒茂电子科技有限公司 | Wireless positioning method and device |
| CN104732089A (en) * | 2015-03-24 | 2015-06-24 | 北京科技大学 | History data construction method for cross-regional positioning system filtering algorithm |
| CN105355159A (en) * | 2015-09-30 | 2016-02-24 | 西安建筑科技大学 | High-precision underground scenic spot self-guide system and positioning method thereof |
| CN108123723A (en) * | 2017-12-22 | 2018-06-05 | 西安烽火电子科技有限责任公司 | A kind of alignment system and method based on radiotechnics |
-
2006
- 2006-12-30 CN CNA2006101616552A patent/CN101212785A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101526609B (en) * | 2009-03-27 | 2011-03-30 | 电子科技大学 | Matching locating method based on wireless channel frequency domain amplitude response |
| CN102854500A (en) * | 2012-08-20 | 2013-01-02 | 郭晓鹏 | Unidirectional wireless ranging method and unidirectional wireless ranging device for vehicles |
| CN103823229A (en) * | 2014-02-28 | 2014-05-28 | 上海交通大学 | Underwater positioning and navigation system and method based on DGPS |
| CN103823229B (en) * | 2014-02-28 | 2016-10-19 | 上海交通大学 | A kind of Underwater Navigation navigation system based on DGPS buoy and method |
| CN104125639A (en) * | 2014-07-21 | 2014-10-29 | 醴陵恒茂电子科技有限公司 | Wireless positioning method and device |
| CN104732089A (en) * | 2015-03-24 | 2015-06-24 | 北京科技大学 | History data construction method for cross-regional positioning system filtering algorithm |
| CN104732089B (en) * | 2015-03-24 | 2017-10-20 | 北京科技大学 | A kind of historical data construction method of trans-regional alignment system filtering algorithm |
| CN105355159A (en) * | 2015-09-30 | 2016-02-24 | 西安建筑科技大学 | High-precision underground scenic spot self-guide system and positioning method thereof |
| CN108123723A (en) * | 2017-12-22 | 2018-06-05 | 西安烽火电子科技有限责任公司 | A kind of alignment system and method based on radiotechnics |
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Open date: 20080702 |