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A GSM-R Interference Source Location Method Based on Direction of Arrival Estimation

A direction of arrival estimation, GSM-R technology, applied in the direction of wireless communication, electrical components, etc.

Inactive Publication Date: 2018-10-26
NORTH ENG OF THE ELECTRIFICATION BUREAU GROUP CRCC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no method to estimate the DOA of the direction of arrival of the interference signal by array signal processing to locate the interference source

Method used

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  • A GSM-R Interference Source Location Method Based on Direction of Arrival Estimation
  • A GSM-R Interference Source Location Method Based on Direction of Arrival Estimation
  • A GSM-R Interference Source Location Method Based on Direction of Arrival Estimation

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Embodiment

[0028] Such as figure 2 As shown in FIG. 10 , the 10 antennas of the space diversity antenna of the GSM-R base station are evenly arranged on the same horizontal plane as an example for detailed description.

[0029] Because the China Railway GSM-R system works in the 885-889 / 930-934MHz frequency range, 900MHz is selected as a typical frequency to set the antenna element spacing, and the antenna element spacing is set to (0.5×3×10 8 ) / (900×10 6 ) = 0.15m. The distance between the array elements is much smaller than the distance between the array elements and the interference source, and it can be considered that the incident angle of the interference signal to each array element is the same. The angle between the incident direction of the signal and the normal direction of the uniform line array is θ, when the signal enters the uniform line array from the left side of the normal line θ∈(0°,90°), when the signal enters the uniform line array from the right side of the normal...

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Abstract

The invention belongs to the railway radio communication net interference source positioning technology and the array signal processing technology field, and relates to a GSM-R interference source positioning method based on a wave arrival direction estimate value. The GSM-R interference source positioning method comprises steps of adopting a GSM-R base station reception antenna to perform DOA estimation on an interference signal incoming wave direction of the interference signal, performing space diversity on the GSM-R base station to construct two groups of antenna arrays, obtaining a DOA estimation result of the interference signal, respectively establishing a linear equation of the connection line between the interference source and two GSM-R base stations to obtain the intersection point of the two straight lines; and the intersection is the position of the interference source. The beneficial effects are that the invention does not need to receive signal frequency spectrum data and is portable; the invention does not need network management system data, the cellular district planning data and the road measurement data and thus is independent; the invention does not need to use the directional antenna to perform step-by-step positioning and is fast; and the invention does not need obtain the environment path loss model in advance and is more flexible.

Description

technical field [0001] The invention belongs to the field of GSM-R (Global System for Mobile Communications-Railway) interference source positioning technology and array signal processing technology, in particular to a GSM-R interference source estimated based on DOA (direction of arrival) estimation of interference signal positioning method. Background technique [0002] GSM-R is a comprehensive dedicated wireless communication system specially designed for railway communication, developed by the International Union of Railways (UIC) and the European Telecommunications Standards Institute (ETSI) for the new generation of railway wireless communication in Europe. GSM-R is based on GSM technology, combined with the needs of railway communication, added multiple priority, emergency call, group call, broadcast call and other related services. The GSM-R system is the development trend of railway communication in my country. It can realize the collection and transmission of vari...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W64/00
CPCH04W64/006
Inventor 马功民李道新黄际彦
Owner NORTH ENG OF THE ELECTRIFICATION BUREAU GROUP CRCC