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Track Initiation Method Based on Two-way Doppler Estimation

A technology of Doppler estimation and track initiation, applied in the field of radar, can solve the problem of false track height

Active Publication Date: 2020-06-05
XIDIAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] For the above-mentioned shortcoming of prior art, the object of the present invention is to provide a kind of track initiation method based on two-way Doppler estimation, be used to solve the problem that the false track is too high in the existing sequential processing class track initiation method

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  • Track Initiation Method Based on Two-way Doppler Estimation
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  • Track Initiation Method Based on Two-way Doppler Estimation

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Embodiment Construction

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0051] An embodiment of the present invention provides a method for starting a track based on two-way Doppler estimation, such as figure 1 As shown, the method includes:

[0052] Step 1. Select the i-th measurement at time l as the track head z l,i .

[0053] The measured track information includes the radial distance ρ m,i , azimuth θ m,i , Doppler frequency Its position is ρ in the Cartesian coordinate system m,i =(ρ m,i cosθ m,i ,ρ m,i sinθ m,i )...

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Abstract

The invention belongs to the radar technology field and discloses a track starting method based on bidirectional Doppler estimation. The method comprises steps that ith measurement at the l time is selected as a track head Zl,i, initialization of a counting value MT=1 from one same target measurement quantity is carried out, initialization of the next association time n=1 of the Zl,i is carried out, for the Zl,i, maximum velocity wave gate screening for measurement at the l+n time is carried out, a residual measurement set is Z'l+n, for measurement at the l+n time satisfying maximum velocity wave gate screening, bidirectional Doppler estimation screening is carried out, and whether the Z'l+n has points satisfying bidirectional Doppler screening is checked. The method is advantaged in that false measurement vectors are effectively eliminated, false track formation is inhibited, under the same false track probability condition, target detection probability is improved, and the detection distance is expanded.

Description

technical field [0001] The invention belongs to the technical field of radar, in particular to a track initiation method based on two-way Doppler estimation, which can be used for target tracking. Background technique [0002] As the first step of target tracking, track initiation establishes target files from signal processing points containing false alarms, clutter and targets, mainly including the establishment of transient tracks and track confirmation. Its main principle is to establish a series of constraints on the measurement data according to the motion model of the initial target, and the measurements that meet the constraints can be confirmed as coming from the same target and sent to the tracker. Its task is to discover potential targets in the surveillance area based on multiple radar measurement data for subsequent tracking. Track initiation is the premise and foundation of target tracking, and the effectiveness of the initial track directly affects the tracki...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/58G01S13/66G01S7/41
CPCG01S7/415G01S13/58G01S13/66
Inventor 刘宏伟高畅周生华刘红亮臧会凯
Owner XIDIAN UNIV