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Spatial positioning method of ultrashort wave signal with single channel and dual base stations

A technology of ultra-short wave signal and space positioning, which is applied in positioning, radio wave measurement system, measuring device, etc., to achieve high-precision space positioning and save manpower and funds

Active Publication Date: 2018-06-22
国家无线电监测中心 +1
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Problems solved by technology

[0004] The present invention aims at the problems existing in the spatial positioning of target ultrashort wave signals, and provides a single-channel dual base station ultrashort wave signal spatial positioning method

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  • Spatial positioning method of ultrashort wave signal with single channel and dual base stations
  • Spatial positioning method of ultrashort wave signal with single channel and dual base stations
  • Spatial positioning method of ultrashort wave signal with single channel and dual base stations

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Embodiment Construction

[0030] The implementation of the technical solutions of the present invention will be described in detail below in conjunction with the drawings and embodiments.

[0031] The method of the present invention organically and innovatively proposes to integrate the technology of the interferometer direction finding method and the quasi-Doppler direction finding method into the radio direction finding system, that is, by comparing the measured phase difference information of the incident signal with the pre-existing quasi-Doppler The similarity of the phase difference distribution information of the signal, so as to obtain the orientation information of the incident signal. The method of the invention can perform spatial positioning on the target ultrashort wave signal, and can breakthroughly improve the positioning accuracy and greatly reduce the positioning cost.

[0032] The core of the realization of the method of the invention is to use a dual-station positioning system compos...

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Abstract

The invention discloses a single channel dual base station ultra-short wave signal spatial positioning method and belongs to the technical field of ultra-short wave radio position finding. According to the method, a dual base station positioning system is constituted of a single channel Doppler antenna array and a reference antenna; phase positions are extracted directly from simulation signals to act as data base; two-dimensional information of azimuth angle and pitch angle is converted to one-dimensional information by use of space included angles, match searching is performed to data base and measured phase positions by use of a similarity measurement function to obtain azimuth angle of a target source. By use of the method, aerial ultra-short wave radio-frequency signals can be accurately positioned, the real-time performance of a direction-finding system is increased, system cost and complexity are reduced, and labor and economic investment are saved; the method is of great practical importance.

Description

technical field [0001] The invention belongs to the technical field of ultrashort wave radio positioning, and relates to a bistatic ultrashort wave signal spatial positioning method, in particular to a dual base station spatial positioning method based on single-channel pseudo-Doppler direction finding and TDOA (time difference of arrival) estimation. Background technique [0002] The development of radio direction finding technology is closely related to the research work of electromagnetic waves and their applications. Every electromagnetic radiation, no matter what form it takes, carries direction information. Radio direction finding can be divided into amplitude method, phase method, Doppler method, time difference of arrival method, spatial spectrum estimation method and so on according to the different direction finding principles. The amplitude method direction finding is based on the magnitude of the output signal after the incoming wave signal is induced by each ar...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/02
CPCG01S5/02
Inventor 李景春邱天爽夏楠金芳晓戚寅哲张小飞王文帅
Owner 国家无线电监测中心
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