Moving target track correlation method based on Gaussian distribution gate
A technology of Gaussian distribution and track correlation, applied in the field of track correlation and radar, can solve the problems of fixed wave gate size, mathematical quantization distribution of moving target tracking error, etc.
Pending Publication Date: 2021-12-31
XIDIAN UNIV
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[0005] The purpose of the present invention is to address the shortcomings of the above-mentioned prior art, and provide a moving target track correlation method based on a Gaussian distribution gate, aiming at solving the specific mathematical quantization distribution of the moving target tracking error in the prior art, and track correlation The problem with the fixed size of the medium wave door
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[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0026] refer to figure 1 , to further describe the specific steps of the present invention.
[0027] Step 1, generate a Gaussian distribution function as follows:
[0028]
[0029] Among them, f(x) means that x obeys The Gaussian distribution function of the Gaussian distribution function, the value of x is a decimal randomly selected at intervals of 0.01 in the range of [0,600], π represents pi, exp represents the exponential operation with e as the base number, ∑ represents the summation operation, and d i Indicates the distance between the target predicted value and the target measured value at the i-th moment, i represents the serial number of the sampling time, μ 0 Indicates the mean distance between all target predicted values and target measured values in 50 consecutive sampling time intervals, Indicates the distance variance between...
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The invention discloses a track correlation method based on a Gaussian distribution gate, and mainly solves the problems that the target tracking precision is reduced due to the fact that the target tracking error distribution cannot be determined and the target tracking is lost due to the fact that the gate size is fixed in the prior art. The method comprises the following implementation steps: generating a Gaussian distribution function; updating the Gaussian distribution function; determining an associated area of each moment; and judging whether the target measurement value at the next moment of the current moment falls into the associated area at the next moment of the current moment. The method effectively solves the problem that the target tracking precision is reduced due to the fact that the target tracking error does not have specific mathematical distribution measurement; and the size of a correlation gate can be changed in real time during track correlation to realize successful target tracking.
Description
technical field [0001] The invention belongs to the technical field of radar, and further relates to a track correlation method of a moving target based on a Gaussian distribution wave gate in the technical field of track correlation. The invention can be used in different moving target environments to realize precise tracking of targets. Background technique [0002] In the track correlation of moving targets, the gate design methods mainly include nearest neighbor, track branch, etc.; the main function of the correlation gate in the target tracking track correlation is to reduce the number of irrelevant point-track correlations, large-scale correlation gates, and target tracking. During track correlation, too many measurement values will fall into the wave gate, which will reduce the accuracy of track correlation and increase the computational complexity of track correlation. With a small-sized wave gate, the real measurement value may not fall within the wave gate when...
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IPC IPC(8): G01S13/66G01S13/70G06F17/18
CPCG01S13/66G01S13/70G06F17/18
Inventor许京伟赵恒万鹏飞兰岚王瑶朱加文李会会
OwnerXIDIAN UNIV