Pulse Doppler radar clutter suppression method based on track clutter map

Abstract

The invention provides a fixed track clutter suppression method based on a track clutter map, and the method comprises the steps: enabling a receiver to receive a returned radio frequency signal, andobtaining a detection target and clutter point track information after preprocessing; processing the point track information based on a track initiation algorithm and a track association algorithm toobtain target and clutter track information; and comparing the track information with track similarity in corresponding clutter map cells in a pre-stored track clutter map, if the track information isa clutter track, cancelling display on the radar, and if the track information is a suspected target, uploading the track information to a radar display interface for display. According to the clutter suppression method, the tracks of clutters such as pedestrians, vehicles, large vehicle sidelobes or passenger planes with specific airlines can be effectively suppressed by 70%-80% through actual measurement verification.

Description

technical field [0001] The invention relates to the communication field, in particular to a pulse Doppler radar clutter suppression method based on a track clutter map. Background technique [0002] The existing pulse Doppler radar can take into account both high detection probability and low false alarm probability in most clean suburbs, deserts or plains, but the detection results in complex urban environments may be affected by large buildings. , pedestrians, passenger planes, or large and small vehicles, if the false alarm probability is guaranteed to be low, the detection probability of weak and small targets will be greatly reduced, and if the detection probability of weak and small targets is high, the false alarm probability will be greatly increased, that is, radar Poor adaptability to complex environments. Therefore, the problem of clutter suppression in urban environments has become a major challenge for current pulse Doppler radars. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0002] The existing pulse Doppler radar can take into account both high detection probability and low false alarm probability in most clean suburbs, deserts or plains, but the detection results in complex urban environments may be affected by large buildings. , pedestrians, passenger planes, or large and small vehicles, if the false alarm probability is guaranteed to be low, the detection probability of weak and small targets will be greatly reduced, and if the detection probability of weak and small targets is high, the false alarm probability will be greatly increased, that is, radar Poor adaptability to complex environments

Therefore, the problem of clutter suppression in urban environments has become a major challenge for current pulse Doppler radars

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