First-initiation second-confirmation radar track initiation method

Abstract

The invention belongs to the technical field of radars, discloses a first-initiation second-confirmation radar track initiation method and mainly solves the problem of an existing radar system that the target track initiation probability is relatively low. The method comprises the steps of: 1) setting a detection judgment false alarm probability, determining a detection threshold, and processing echo signals to form detection statistics and measured data; 2) according to the measured data, establishing an initial track according to a track initiation criterion; 3) enabling the initial length value of a track confirmation window to be the length of a track initial window; 4) calculating a false point trace probability and a false track probability of the mth initial track in the track confirmation window; 5) according to the false track probability of the mth initial track, determining whether the initial track is a target track, if a track ending criterion is met, then cancelling the track, and if the track is not determined nor cancelled, then adding one to the track confirmation window and returning to the steps 4); and 6) traversing all the initial tracks. Compared with an existing track initiation method, the initiation probability of the target track is improved.

Description

technical field [0001] The present invention relates to the field of radar technology, in particular to a radar track initiation method that starts first and then confirms, specifically a method that first establishes an initial track with a high probability, and then confirms the track, which can be used for Improved target track initiation performance for radar systems. Background technique [0002] Track initiation is an important part of target tracking technology, and its purpose is to establish the target track as soon as possible after the target enters the radar surveillance area. On the other hand, it is also necessary to avoid the appearance of false tracks caused by too many false points. From the perspective of engineering implementation, track initiation is the process of establishing an initial track based on sensor measurements and judging whether the track originates from a real target. [0003] According to the different data processing methods, track init...

AI Technical Summary

Problems solved by technology

In order to reduce the number of false tracks, sequential processing technology usually sets a lower false alarm probability, such as a typical value of 10 -6 , however a lower false alarm probability will result in a lower target detection probability, resulting in poor track initiation performance

In order to improve the radar track initiation performance, one of the most direct methods is to increase the false alarm probability of the radar system to obtain a lower detection threshold, so as to ensure the output of the target track, but this method will introduce too many false tracks , and even cause the system to saturate

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