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A wireless positioning method based on tpoa in nlos transmission environment

A wireless positioning and transmission environment technology, applied in wireless communication, electrical components, etc., can solve problems such as poor accuracy

Active Publication Date: 2016-05-11
JIANGSU ETERN +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the shortcomings of the poor accuracy of the existing wireless positioning methods for NLOS transmission environments, the present invention provides a wireless positioning method for NLOS transmission environments based on time product of arrival (TPOA, time product of arrival) that effectively improves positioning accuracy

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  • A wireless positioning method based on tpoa in nlos transmission environment
  • A wireless positioning method based on tpoa in nlos transmission environment
  • A wireless positioning method based on tpoa in nlos transmission environment

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings.

[0039] refer to Figure 1 ~ Figure 3 , a TPOA-based NLOS transmission environment wireless positioning method, comprising the following steps:

[0040] (1) The signal sent by the mobile station MS is received by multiple base stations, and the TOA information in the signal is extracted, and the information is collected into the main base station;

[0041] (2) Convert the measured TOA into the product TPOA of the time of arrival;

[0042] (3) According to the positioning geometric relationship, construct a positioning equation group;

[0043] (4) Mathematically transform the positioning equations into linear equations;

[0044] (5) Estimate the coordinates of the mobile station MS using the least square algorithm.

[0045] In the step 2), if the i-th base station BS is utilized i Measured to get TOA i , the main base station is set as the first base station, then ...

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Abstract

Disclosed is an NLOS transmission environment wireless locating method based on TPOAs. The locating method comprises the following steps that (1) signals sent by an MS are received by a plurality of BSes, TOA information in the signals is extracted, and the information is collected to the main locating base station; (2) a measurement value of the main base station is used as a reference, and TOA measured by the other base stations are multiplied by the reference value to obtain the TPOAs; (3) according to the locating geometrical principle, a locating equation set with the TPOAs being parameters is established; (4) linearization processing is conducted on the locating equation set; (5) the equation set is solved by the utilization of the LS method, and locating is conducted. The NLOS transmission environment wireless locating method based on the TPOAs can effectively improve the locating precision.

Description

technical field [0001] The invention relates to the technical field of wireless positioning, in particular to a wireless positioning method in an NLOS transmission environment. Background technique [0002] Wireless positioning refers to a technology that uses parameters such as angle and distance included in the received signal to estimate the position of the mobile terminal. In recent years, due to economic development and the needs of people's lives, this technology has been widely used. It can provide services including emergency calls, travel information services, vehicle management, etc., and has also been applied to charging based on location information Systems and intelligent transportation systems are an important part of the Internet of Things. [0003] In the actual wireless transmission environment, due to the existence of a large number of obstacles, the signal will not be transmitted along a straight line during the period from the sending end to the receivin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W64/00
Inventor 华惊宇郑志龙郑骁能彭宏孟利民
Owner JIANGSU ETERN