AIS and active radar flight path fusion and recognition method

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...

AI Technical Summary

Problems solved by technology

[0004] However, the above method only studies the problem of track fusion, and does not study the automatic identification of active radar tracks in the case of dense multi-targets.

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