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Base station identification method in single-frequency network positioning system

A technology of positioning system and identification method, applied in the field of communication positioning, can solve the problem that the mobile station cannot identify the signal, and achieve the effect of reducing the non-line-of-sight effect and reducing the hardware requirement.

Active Publication Date: 2014-04-23
NANJING UNIV OF POSTS & TELECOMM
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AI Technical Summary

Problems solved by technology

This technology can greatly save precious frequency resources and improve spectrum utilization; however, for the development of positioning functions, it means an unavoidable institutional problem, that is, the mobile station itself cannot to identify signals from different base stations
Therefore, the base station identification problem of SFN positioning system will be a challenging subject

Method used

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Embodiment Construction

[0036] A base station identification method in a single frequency network positioning system of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0037] Such as figure 1 As shown, the base station identification method in a single frequency network positioning system of the present invention, because the non-line-of-sight NLOS mitigation algorithm position estimation algorithm is a common algorithm, and the state prediction model is also a conventional technology in radar signal processing. The use of the minimum distance classifier for base station identification will be described in detail below.

[0038] The flow chart of the minimum distance classifier for base station identification is as follows figure 2 shown. Assuming that the obtained TOA measurement value and the number of prior DTV base stations stored in the receiver are N and M respectively, the specific implementation steps are as follows: (1) According to...

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Abstract

The invention provides a base station identification method in a single-frequency network positioning system. The method, based on the positioning system, converts the problem of base station identification to the problem of data classification, and the base station identification is realized through a minimum-distance classifier; a state prediction model is utilized to estimate motion parameters of a mobile station, and thus hardware requirement of the system is lowered; and to get a better base station identification effect in a non-line-of-sight environment, an interaction multi-model method is utilized to reduce non-line-of-sight effect, and thus more accurate mobile station object information is obtained. Two different functions, position estimation and base station identification, of the positioning system are closely associated, so that the method is economic and effective, and is suitable for all digital television standards.

Description

technical field [0001] The invention belongs to the technical field of communication positioning, in particular to a base station identification method in a single frequency network positioning system. Background technique [0002] Digital TV Terrestrial Broadcasting (DTTB), as a new information transmission technology, has been widely used in my country since August 2007. In addition to receiving effective video and audio signals, users can also use the carrier and digital code stream of terrestrial digital TV signals to measure spatial parameters such as the distance from the transmitting tower to the receiving end to achieve wireless positioning. Due to the huge advantages of digital TV signals in positioning, more and more people begin to pay attention to this new positioning technology. [0003] The digital TV terrestrial broadcasting system adopts single-frequency network technology to save spectrum, that is, the transmitting stations in different locations in a synch...

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Application Information

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IPC IPC(8): G01S5/02
CPCG01S5/0252G01S5/0257
Inventor 颜俊朱卫平叶新荣康彬
Owner NANJING UNIV OF POSTS & TELECOMM
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