Correlation method based on AIS and radar angle system deviation

A technology of angle deviation and system deviation, which is applied in radio wave measurement system, radio wave reflection/re-radiation, utilization of re-radiation, etc., can solve problems such as mis-association, achieve accurate correlation, good adaptability, and high stability Effect

Active Publication Date: 2018-05-22
10TH RES INST OF CETC
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Problems solved by technology

[0005] In order to solve the traditional radar and AIS correlation problems caused by a large number of false correlations due to radar angle deviation, the purpose of the present invention is to address the deficiencies in the prior art and provide a correlation with high reliability and higher correlation that can Reduce the misjudgment rate and improve the accuracy and correlation rate of track correlation, based on the correlation method between AIS and radar angle system deviation

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  • Correlation method based on AIS and radar angle system deviation
  • Correlation method based on AIS and radar angle system deviation
  • Correlation method based on AIS and radar angle system deviation

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Embodiment Construction

[0016] refer to figure 1 . According to the present invention, the association of AIS and radar angle system deviation can be realized through the following steps:

[0017] Step 1: Estimate the angular range [-α, α] of the radar system bias, where α can be given the maximum range by empirical values, thus reducing the assumption calculation time;

[0018] Step 2: Bias to Radar Angle Make assumptions, since the angle deviation may be any value in [-α, α], quantize the angle value between [-α, α] into an array [-α+β, -α+2β...0, -β +α,α], then the real deviation must be close to a certain value in the array, β=2α / (K-1), K is the number of hypotheses;

[0019] Step 3: Suppose the angular deviation of the radar is is a certain value in the array [-α+β,-α+2β...0,-β+α,α], and on this basis, the radar measurement angle compensation is performed to obtain the calibrated radar measurement value, and at the same time The position and velocity of the AIS target in the earth coordi...

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Abstract

The invention provides a correlation method based on AIS and radar angle system deviation, so as to realize accurate correlation between a radar and an AIS in the case of angle deviation existing in radar detection processing. The method is realized through the above technical scheme: a radar deviation range is determined by using prior knowledge and is quantified, and a deviation array is obtained; angle deviation is assumed to be phi, radar angle correction is carried out on the basis, and a position and a velocity under an AIS target geodetic coordinate system are converted to those under aradar polar coordinate system; the correlation degree between the radar and the AIS is calculated according to a fuzzy membership function, a decision threshold is then set, and the number of correlated targets and the number of uncorrelated targets are determined, wherein the correlated targets are based on a calculation result; the fuzzy memberships of all targets are accumulated; all angle deviation assumptions in the array are traversed, the target membership sum is calculated, and the maximum membership sum is selected as a final result; and as time changes, assumption results are subjected to multiple times of verification and confirmation.

Description

technical field [0001] The invention relates to a method for associating target track under the angle deviation of AIS and radar in the field of information fusion. Background technique [0002] AIS is a general-purpose ship automatic identification system. In practical applications, AIS and radar just form complementary advantages. In order to obtain more accurate and reliable information of the target, it is necessary to combine AIS and radar and comprehensively process their data. Therefore, AIS and radar The fusion of radar target tracks has become an inevitable trend, and track correlation is a necessary stage for the fusion of AIS and radar tracks. The quality of the correlation performance directly affects the quality of track fusion. Necessary for surface early warning and detection capabilities. Radar and AIS, as two important means of monitoring and monitoring maritime targets, can provide track information of targets in the observation or monitoring area. The tr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/86
CPCG01S13/86
Inventor 罗智锋陈怀新邓竹莎李思奇陈贻海
Owner 10TH RES INST OF CETC
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