Submarine radar multi-target detection method in strong clutter ocean environment

Abstract

The invention provides a multi-target detection method for a submersible radar under strong clutter marine environment. The method includes the steps of suppressing clutters on the periphery of smalltargets within 4 sea miles according to radar echo signals by using an adaptive dynamic target display algorithm and a unit average maximum selection constant false alarm algorithm; suppressing the clutters on the periphery of large targets 8 sea miles or father away through the self-adaptive moving target display algorithm and an inverse asynchronous algorithm; suppressing the interference signals within 8 sea miles by the self-adaptive moving target display algorithm and a unit average minimum selection constant false alarm algorithm; suppressing the multi-target interference signals 16 seamiles or farther away through the inverse asynchronous algorithm and the unit average maximum selection constant false alarm algorithm; suppressing meteorological clutter caused by rain and snow through the self-adaptive moving target display algorithm and a dynamic clutter map algorithm; and detecting low-speed small targets through the inverse asynchronous algorithm and the dynamic clutter map algorithm. Compared with the prior art, the multi-target detection method has the advantage that the multi-target detection capability is improved, clutter and interference resistance can be restrained, and the method can be used for multi-target detection under a strong clutter background.

Description

technical field [0001] The invention belongs to the technical field of radar signal processing, in particular to a multi-target detection method for latent radar, which can be used for multi-target detection under strong clutter background. Background technique [0002] Submarine radar is an important maritime navigation equipment, and it has the ability to detect targets in a set range at sea. At present, with the increasingly complex marine environment, multi-target detection on the sea surface becomes particularly important. [0003] The existing potential radar multi-target detection methods include the following two types: [0004] First, for the pulse system radar in the potential radar, the method of gain and time sensitivity control STC cooperation and the constant false alarm CFAR method are used to complete the distinction between multi-target detection and sea clutter on the sea surface; [0005] Second, for the pulse compression system radar in the submarine ra...

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Problems solved by technology

For example, in the paper "Research on the Application of FMCW Radar Signal Processing Algorithms under Strong Clutter Background" at the 14th National Radar Academic Annual Conference in 2017, the application of related signal processing combination algorithms has been preliminarily explained, but this method does not This paper elaborates in detail how to use the potential radar to detect multi-targets and small targets with different ranges and suppress interference signals in the strong clutter ocean environment, thus, it will lead to the loss of weak and small targets in multi-target detection, echo deformation and Weakening of Radar Anti-Intercept Capabilities

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