AIS and active radar flight path fusion and recognition method

A technology of active radar and track fusion, applied in the direction of radio wave reflection/re-radiation, using re-radiation, measuring devices, etc., can solve problems such as automatic identification of unactive radar tracks

Active Publication Date: 2015-12-02
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

[0004] However, the above method only studies the problem of track fusion, and does not st

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  • AIS and active radar flight path fusion and recognition method
  • AIS and active radar flight path fusion and recognition method
  • AIS and active radar flight path fusion and recognition method

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Embodiment Construction

[0047] The present invention mainly uses the actual AIS track information report and active radar track information report data for verification, and all steps and trouble-shooting are verified to be correct and effective on Matlab2012. The present invention will be further described in detail with regard to specific embodiments.

[0048] Intercept the 10-minute AIS track and active radar track from the measured message, such as figure 2As shown, in order to provide a reference standard for the subsequent track recognition fusion algorithm, the AIS track and the active radar track are visually compared for recognizable track analysis, including AIS track MMSI number, active radar track ID number with identifiable track markings. Visible active radar tracks 1-8781, 1-8847, 1-8848, 1-8767, 1-8587, 1-8757, 1-8763, 1-8759, 1-8633, 1-8727, 1-8598, 1 The 14 active radar tracks of -8774, 1-8729, and 1-8594 all have AIS tracks around them, which are possible identifiable tracks. U...

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Abstract

The invention relates to an AIS and active radar flight path fusion and recognition method and belongs to the radar signal processing technical field. The method includes the following steps that: space-time unification pre-processing is performed on all AIS flight paths and active radar flight paths in a processing period; the AIS flight paths are associated with the active radar flight paths through adopting a flight path association cost and dual-logic criterion-based flight path association algorithm; and as for AIS flight paths and active radar flight paths which are associated successfully, Bayesian reasoning-based flight path ID distribution probabilities corresponding to the active radar flight paths are updated; and active radar flight path recognition and judgment are performed according to the ID distribution probabilities, and DCI criterion-based flight path fusion is performed on the matched AIS flight paths and active radar flight paths. With the AIS and active radar flight path fusion and recognition method of the invention adopted, automatic recognition of active radar flight paths can be effectively accomplished in a dense target environment through utilizing AIS flight path information, and active radar target tracking precision can be improved.

Description

technical field [0001] The invention belongs to the technical field of radar signal processing, and relates to multi-sensor information fusion technology, in particular to heterogeneous sensor information fusion technology. Background technique [0002] AIS is a shore-based and ship-borne broadcast automatic identification and response system working in the VHF sea frequency band. The ship's dynamic information and static information are actively reported by the ship-borne AIS equipment, which can detect, track and identify sea targets. AIS can also be used as a bypass system of the radar surveillance network. Combining active radar and AIS information can realize complementary advantages within the system, share resources, effectively expand the coverage of space and time, and improve the reliability of the surveillance system and target tracking accuracy. , at a lower cost to enhance the surveillance capabilities of the radar system, thereby improving the system's maritime...

Claims

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Application Information

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IPC IPC(8): G01S7/40G01S13/66
CPCG01S7/40G01S13/66
Inventor 易伟刘加欢李乾杨亚张紫薇杨东超崔国龙孔令讲杨建宇
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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