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Radar track initiation method based on location information and Doppler information

A track start and position information technology, applied in the radar field, can solve the problem of low track start efficiency, achieve the effect of improving track start efficiency, suppressing false track, and increasing the probability of track start

Active Publication Date: 2017-02-15
XIDIAN UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defect that above-mentioned prior art exists, has proposed a kind of radar track initiation method based on position information and Doppler information, is used to solve the track that exists in the method for existing sequential processing technology class Technical issues with low initial efficiency

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  • Radar track initiation method based on location information and Doppler information
  • Radar track initiation method based on location information and Doppler information
  • Radar track initiation method based on location information and Doppler information

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Embodiment Construction

[0030] Below with reference to accompanying drawing and embodiment, the present invention is described in further detail:

[0031] refer to figure 1 , the implementation steps of the present invention are as follows:

[0032] Step 1, calculate the radar maximum unambiguous velocity V f .

[0033] Calculate the radar maximum unambiguous velocity V f :

[0034]

[0035] Among them, λ represents the wavelength of the radar emission signal, f r Indicates the pulse repetition frequency.

[0036] Step 2, calculate the radial velocity set v k-N,i .

[0037] According to the track head z k-N,i Doppler frequency measurements in f k-N,i and the maximum unambiguous velocity V f , calculate the measurement vector z k-N,i The corresponding radial velocity set v k-N,i , the measurement vectors described below all represent measurement vectors that are not associated with existing stable tracks, and the measurement vectors include distance measurement values, azimuth measureme...

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Abstract

The invention puts forward a radar track initiation method based on location information and Doppler information in order to solve the technical problem that the existing sequential processing technical method is of low track initiation efficiency. The method is implemented by the steps as follows: calculating the maximum unambiguous velocity; selecting a track head from measurement vectors scanned at the kth time, and calculating a radial velocity set; building a distance constraint accord to the radial velocity; building a space constraint according to the maximum velocity; during (k+1)th scanning, associating measurement vectors which are on the same Doppler channel with the track head and meet the two constraints; using effective measurement vectors to update the distance constraint, and continuing the association operation; building a stable track according to the track initiation criterion; and traversing the measurement vectors scanned at the kth time and a corresponding radial velocity set. The method of the invention is of high track initiation efficiency, and can be used in target tracking.

Description

technical field [0001] The invention belongs to the technical field of radar and relates to a method for starting a radar track, in particular to a method for starting a radar track based on position information and Doppler information, which can be used for target tracking. Background technique [0002] Track initiation is the first step in target tracking. It is a decision-making method for establishing a new archive target. It mainly includes two aspects: temporary track and track determination. The main principle is to use observation data and actual scene data to construct constraints Selecting the corresponding measurement vector to establish the track is the primary problem of target track processing. Its task is to determine the potential target in the scanning area according to the radar observation data many times, and give the initial state estimation of the target. As the premise and basis of target tracking, track initiation directly affects the tracking perform...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/72G01S7/41
CPCG01S7/415G01S13/723
Inventor 周生华康鹏刘宏伟但晓东刘洪亮
Owner XIDIAN UNIV
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