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A three-dimensional positioning method of external radiation source using time difference and one-dimensional azimuth measurement

An external radiation source, three-dimensional positioning technology, applied in the field of electronic information, to achieve the effect of reducing complexity

Active Publication Date: 2022-03-29
UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The problem to be solved by the present invention is how to perform three-dimensional positioning on the target by measuring the time difference of arrival and one-dimensional orientation of the external radiation source signal reflected by the target, and reduce the complexity of the positioning algorithm

Method used

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  • A three-dimensional positioning method of external radiation source using time difference and one-dimensional azimuth measurement
  • A three-dimensional positioning method of external radiation source using time difference and one-dimensional azimuth measurement
  • A three-dimensional positioning method of external radiation source using time difference and one-dimensional azimuth measurement

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Embodiment

[0025] In this example, the speed of light c=3e8 m / s, the coordinates of the positioning station are (0,0,0), the number of external radiation sources K=3; the coordinates of the first external radiation source are (-1,29, 0.56), the coordinates of the second external radiation source are (2,-27,2.83), and the coordinates of the third external radiation source are (3,-15,1.20). The units of coordinates and positioning errors in this example are km.

[0026] When the actual coordinates of the target are (104,14,18), the echo time difference measurement of the first external radiation source signal reflected by the target is 616.4779 microseconds, the echo time difference measurement of the second external radiation source signal reflected by the target is 634.0928 microseconds, the echo time difference measurement of the signal reflected by the third external radiation source 658.4904 microseconds, one-dimensional direction finding When it is 12.2067 degrees, the three-d...

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Abstract

The invention belongs to the technical field of electronic information, and in particular relates to a three-dimensional positioning method of an external radiation source by using time difference and one-dimensional azimuth measurement. The present invention uses the arrival time difference and one-dimensional azimuth measurement of the external radiation source signal reflected by the target, and further constructs the positioning matrix and the positioning vector by constructing the external radiation source coordinate matrix, the external radiation source distance vector and the time difference vector. The vector realizes the three-dimensional positioning of the target. Using the method proposed by the present invention, using the position coordinates of the external radiation source, the time difference of arrival of the external radiation source signal reflected by the target and the one-dimensional azimuth measurement, the target can be three-dimensionally positioned, and while reducing the complexity of the direction finding system, it can realize The purpose of measuring the height of the target.

Description

technical field [0001] The invention belongs to the technical field of electronic information, and in particular relates to a method for three-dimensional positioning of a target by using the arrival time difference of an external radiation source signal reflected by the target and one-dimensional azimuth measurement. Background technique [0002] Using radiation sources in the surrounding environment to locate non-cooperative targets is an important passive positioning method. Because it is not only concealed, it is also suitable for non-cooperative targets that keep radio silent. In recent years, this method is called "external radiation". The method of "source location" has received more and more attention. [0003] In external radiation source positioning, the positioning station can measure the incoming wave direction of the external radiation source signal reflected by the target, and also measure the time difference between the external radiation source signal reflect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/42G01S13/87G01S13/06G01S13/88
CPCG01S13/42G01S13/06G01S13/87G01S13/882
Inventor 万群冯欣邢天弈彭一洵丁学科宫健徐保根万义和
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA