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Method for quickly determining target three-dimensional coordinate by utilizing one-dimensional direction-finding

A technology of three-dimensional coordinates and targets, applied in the field of electronic information, can solve the problems of large amount of calculation in three-dimensional search, insufficient information utilization of pseudo-linear least squares method, etc., and achieve the effect of excellent accuracy

Active Publication Date: 2019-06-14
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of large amount of calculation in the three-dimensional search of the nonlinear least square method in the background technology of using one-dimensional direction finding for three-dimensional positioning, pseudo-linear The problem of insufficient information utilization of the least squares method uses the one-dimensional direction finding results of the observation station and the azimuth angle measurement of the linear array of the observation station itself, and realizes the three-dimensional positioning of the target through iterative search, avoiding three-dimensional coordinate search, Quickly determine the 3D coordinates of the target

Method used

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  • Method for quickly determining target three-dimensional coordinate by utilizing one-dimensional direction-finding
  • Method for quickly determining target three-dimensional coordinate by utilizing one-dimensional direction-finding
  • Method for quickly determining target three-dimensional coordinate by utilizing one-dimensional direction-finding

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Embodiment

[0030] This example takes four observation stations with known positions and one target that needs to be positioned on a three-dimensional plane as an example. The position coordinates of each observation station are (100,0,0), (0,100,0), (- 100,0,0), (0,-100,0) meters, each observation station has a uniform linear array with 2 array elements, the array element spacing is 0.5 meters, and the x-axis coordinates of each linear array with the ground plane The included angles are (0,0.7854,1.5708,2.3562) (unit: radian), the signal center frequency is 300MHz and the three-dimensional coordinates of the target position are (-102.1430,440.7459,813.4441) meters.

[0031] The specific implementation process of this example is as follows:

[0032] Step 1: Assuming that the observation station is located on the ground level, the number of observation stations (N) is initially determined to be 4, and the location coordinates of the observation station (B n ) are (100,0,0), (0,100,0), (-1...

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Abstract

The invention belongs to the technical field of the electronic information, and relates to a method for quickly determining target three-dimensional coordinate by utilizing one-dimensional direction-finding. The invention aims at a problem that the three-dimensional search calculated amount of the nonlinear least square method in the background technology of performing the three-dimensional positioning by utilizing the one-dimensional direction-finding and the problem that the pseudo-linear least square method information utilization is insufficient; by using an one-dimensional result of an observation station and own azimuth angle measurement of a linear array of the observation state, the three-dimensional positioning on the target is realized through an iterative searching way, the three-dimensional coordinate searching is avoided, and the three-dimensional coordinate of the target is quickly determined.

Description

technical field [0001] The invention belongs to the technical field of electronic information, and relates to a method for quickly determining the three-dimensional coordinates of a target by using a plurality of observation stations to measure the one-dimensional direction of the target. Background technique [0002] According to the measurement of the signal parameters used, the radio positioning technology can be divided into ranging positioning, direction finding positioning and frequency measuring positioning. It is widely used in fields such as radio positioning. [0003] In the commonly used direction finding and positioning system, each observation station uses a linear array or an area array to perform one-dimensional or two-dimensional direction finding on the target, and then combines the geographical coordinates of the observation station for cross positioning to calculate the two-dimensional direction of the target position. coordinates or three-dimensional coo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/04
Inventor 万群李逸君孙奕髦李明兵邹继锋郭贤生邹麟庄杰
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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