Low false alarm rate rapid target detection method for ground surveillance radar

Abstract

The invention discloses a low false alarm rate rapid target detection method for a ground surveillance radar, relating to the target detection of the ground surveillance radar in the field of radio measurement. The method includes the processing steps of data distance partition, distance partition threshold table calculation, data Doppler division, Doppler rapid target detection, super clutter target detection, and target data merging. This method performs the partition processing on the distance-Doppler data on two dimensions, and realizes the rapid target detection with low false alarm rate. The method has the characteristics of high target detection probability, low false alarm rate, fast calculating speed, and simple engineering realization, solving the problems of high false alarm rate or complex target detection algorithm of a radar system in a ground clutter environment, and being especially suitable for the constant false alarm detection of ground surveillance radars and battlefield reconnaissance radars.

Description

technical field [0001] The invention relates to a fast target detection method with low false alarm rate for ground surveillance radar. Background technique [0002] Ground surveillance radars are used for search and continuous surveillance of active targets over large areas. Because it is affected by ground clutter and belongs to multi-target detection radar, the target false alarm rate is a key indicator affecting the performance of this type of radar. In order to achieve low false alarm rate under ground clutter conditions, the target detection method adopted by ground surveillance radar is very important. At the same time, the ground surveillance radar processes the target data in real time, and the processing time resources are limited, so the complex target detection method cannot be adopted. Therefore, a fast target detection method with low false alarm rate for ground surveillance radar has important engineering value. [0003] At present, the average value detect...

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Problems solved by technology

[0003] At present, the average value detectors (such as CA, GO, SO, etc.) widely used in ground surveillance radars are relatively simple in calculation, fast in processing speed, but have a high false alarm rate, and do not have the ability of low false alarm rate.

However, methods such as the ordered statistical detector OS and the reduced average detector TM can reduce the false alarm rate to a certain extent under the condition of non-flat ground clutter, but the computational complexity increases exponentially, and the real-time processing performance is poor.

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