Angle residual error-based NLOS transmission base station identification and positioning method

A positioning method and base station technology, which can be used in positioning, advanced technology, climate sustainability, etc., can solve problems such as aggravating the accuracy and impact of positioning algorithms, and achieve the effect of high positioning accuracy and high recognition accuracy.

Pending Publication Date: 2022-06-03
ZHEJIANG GONGSHANG UNIVERSITY
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AI Technical Summary

Problems solved by technology

According to the field measurement of Motorola and Ericsson, it is found that the NLOS error tends to increase with the increase of the straight-line distance between the mobile station (MS, mobilestation) and the base station or base station (BS, base station). The impact of traditional positioning algorithm accuracy

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  • Angle residual error-based NLOS transmission base station identification and positioning method
  • Angle residual error-based NLOS transmission base station identification and positioning method
  • Angle residual error-based NLOS transmission base station identification and positioning method

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Embodiment Construction

[0073] refer to Figure 1 to Figure 4 , a method for identifying and locating an NLOS transmission base station based on an angle residual, the method comprising the following steps:

[0074] 1) Multiple base stations receive the transmitted signal of the mobile station MS, assuming that the time of arrival TOA and the angle of arrival AOA information in the signal have been estimated, and the estimated information and the coordinates of the base station BS participating in the positioning can be obtained in the positioning master base station.

[0075] 2) Every two base stations are divided into a group. Assuming that there are N base stations participating in the positioning, they can be divided into group, the BS coordinates in each group and the corresponding ranging and angle measurement information are extracted from the positioning master base station, where the ranging information is equivalent to TOA, and the angle measurement information is equivalent to AOA;

[00...

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Abstract

An NLOS transmission base station identification and positioning method based on angle residual error comprises the following steps: firstly, N base stations need to be grouped in pairs, after the number of groups is set, a calculation angle value is obtained by utilizing the cosine law according to obtained TOA and AOA estimated values, then a difference value between the calculation angle value and a measured AOA value is obtained, the difference value is taken as the angle residual error, and an angle threshold value is obtained at the same time; and the NLOS transmission base station and the LOS transmission base station can be identified by comparing the residual error and the threshold, finally, the position of the MS is estimated by using the parameter measurement value of the LOS transmission base station, and the estimation algorithm adopts a two-step weighted least square algorithm. According to the NLOS transmission base station identification and positioning method based on the angle residual error, errors are effectively reduced, and the positioning precision is improved.

Description

technical field [0001] The invention relates to the technical field of wireless positioning, aiming at a base station identification and positioning method in an NLOS transmission environment, which can identify the NLOS transmission base station and the LOS transmission base station, and use the LOS transmission base station to locate the MS. Background technique [0002] Wireless positioning refers to a technique for estimating the location of a mobile terminal using parameters such as angle and distance contained in received signals. 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 location-based charging. It is an important part of the Internet of Things in the system and intelligent transportation system. [0003] In the actual wireless transmission environment, the sign...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/00G01S5/02G01S5/04G01S5/06H04W64/00
CPCG01S5/011G01S5/021G01S5/04G01S5/06H04W64/00Y02D30/70
Inventor 华惊宇闻建刚王家乐倪郑威王安定
Owner ZHEJIANG GONGSHANG UNIVERSITY
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