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Mobile station location device and method based on TDOA location and location device based on mobile station location device

A technology for mobile base stations and positioning base stations, applied in positioning, measuring devices, instruments, etc., can solve the problems of difficulty in meeting the requirements of accuracy and real-time performance, increase system cost and system complexity, etc., achieve good real-time performance, save costs, realize The effect of positioning

Active Publication Date: 2017-10-24
成都四相致新科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Only using fixed base stations obviously cannot solve the above problems, and using other positioning methods to locate mobile base stations will not only increase the system cost and complexity, but also make it difficult to meet the requirements in terms of accuracy and real-time performance.

Method used

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  • Mobile station location device and method based on TDOA location and location device based on mobile station location device
  • Mobile station location device and method based on TDOA location and location device based on mobile station location device
  • Mobile station location device and method based on TDOA location and location device based on mobile station location device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Embodiment 1: When all positioning base stations are successfully synchronized, the distance value obtained in step 4 related to the mobile base station is:

[0050] Step 41: Calculate the corresponding n transmission times according to the time stamps of the broadcast positioning information of the n fixed base stations and the time stamps when the mobile base stations respectively receive the positioning information of the n fixed base stations;

[0051] Step 42: Calculate n distance values ​​between the mobile base station and the n fixed base stations based on the n transmission times.

[0052] Among them, the specific process of calculating a distance value is as follows: Specifically, it refers to the fixed base station j at time T i,j To send a signal, mobile base station i at time T i,i After receiving the signal sent by fixed base station j, the transmission time between mobile base station i and fixed base station j is obtained as ΔT i,j =|T i,i -T i,j |, ...

Embodiment 2

[0054] Embodiment 2: Based on Embodiment 1, using circular positioning to solve the coordinates of the mobile base station, the specific process of obtaining the coordinates of the mobile base station in step 4 is:

[0055] Step 43: Based on any three distance values ​​among the n distance values ​​and the position coordinate information of the fixed base station, a system of equations is constructed according to three different distance values ​​to solve the three-axis position coordinates of the mobile base station.

[0056] Specifically: Step 431: the process of establishing an equation is:

[0057] The coordinate value of the fixed base station j is (x j ,y j ,z j ); the equation can be constructed between mobile base station i and fixed base station j:

[0058]

[0059] Step 432: Similarly, use at least 3 different distance values ​​c*ΔT i,j , to carry out the simultaneous equations to obtain the coordinate value of the mobile base station (x i ,y i ,z i ), and ...

Embodiment 3

[0061] Embodiment 3: When all positioning base stations are successfully synchronized, the distance difference related to the mobile base station obtained in step 4 refers to:

[0062] Step 51: Based on Embodiment 1, according to m distance values ​​between the mobile base station and m fixed base stations, m-1 irrelevant distance difference values ​​are obtained; m is greater than or equal to 4;

[0063] For example 1: step 511: obtain m distance values ​​of different m fixed base stations of mobile base station i and ID; as mobile base station i and ID numbers are respectively 5 of 5 fixed base stations of 1, 2, 3, 4, 5 The distance values ​​are P i,1 ,P i,2 ,P i,3 ,P i,4 ,P i,5 ;

[0064] Step 512: Taking any one of the m fixed base stations as a reference, the distance value between the mobile base station i and the fixed base station j is a reference distance difference, and calculate the difference between the reference distance difference and other m-1 distance dif...

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Abstract

The present invention relates to the TDOA location technology field, especially to a mobile station location device and method based on TDOA location and location device based on mobile station location device. Any extra auxiliary device is not needed, there is no any difference between a mobile station and a fixed station about the participation in a location process, it is only needed that a location engine performs data processing of the mobile station, and a plurality of modes are employed to realize position location of the mobile station. All the location stations can perform synchronization processing; all the location stations broadcast location information; all the location stations receive location information broadcasted by other location stations and upload related time stamps and location information corresponding to the location station to the location engine in real time for storage; the location engine obtains a distance value or a distance difference related to the mobile station according to the fixed station position information and the related time stamp; and based on the distance value or the distance difference and the fixed station position coordinate information, a correlation positioning method is employed to obtain coordinates of the mobile station.

Description

technical field [0001] The invention relates to the technical field of TDOA positioning, in particular to a mobile base station positioning device, positioning equipment and method based on TDOA positioning. Background technique [0002] TDOA positioning technology requires several fixed base stations to determine the position of the positioning equipment. These base stations need to input coordinates in advance, or use other positioning means for positioning. [0003] In actual use, due to objective environmental constraints, the locations that can be used to install base stations are very limited, which will make the positioning effect drop sharply. In some areas, due to poor base station signal coverage, positioning cannot even be performed. In order to improve the positioning effect and reduce the dead angle of positioning, it is often necessary to install the positioning base station on a moving object, such as a tower crane arm on a construction site, or simply install...

Claims

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Application Information

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IPC IPC(8): H04W64/00G01S5/10
CPCG01S5/10H04W64/00
Inventor 黄令
Owner 成都四相致新科技有限公司
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