Radar sea surface low-altitude detection performance simulation method and simulation model

Abstract

The invention discloses a radar sea surface low-altitude detection performance simulation method and simulation model. The model comprises a free space maximum action distance calculation module whichis used for calculating the free space maximum action distance of a radar for target detection through a radar equation, a sight distance and interference area far-field calculation module which is used for solving the interference area far-field distance, an interference region and diffraction region propagation factor calculation module which is used for calculating an interference region propagation factor and a diffraction region propagation factor, an airway signal-to-noise ratio calculation module which is used for calculating an echo signal signal-to-noise ratio and a free space signal-to-noise ratio of each point of the sea surface low-altitude target airway in an interference region and a diffraction region, and a low-altitude detection performance graph drawing module which is used for drawing a low-altitude detection performance curve graph according to the echo signal signal-to-noise ratio and the free space signal-to-noise ratio of each point position of the target airway. Compared with other conventional models, the established simulation model provided by the invention has more real and accurate simulation result and higher application scene adaptability.

Description

technical field [0001] The invention belongs to shipborne radar detection simulation technology, in particular to a radar sea surface low-altitude detection performance simulation method and a simulation model. Background technique [0002] Due to the multipath effect formed by the reflection of electromagnetic wave signals on the sea surface and the occlusion and diffraction effect of the earth's curvature on electromagnetic wave signals, microwave radars have detection blind spots and reduced detection power for ultra-low-altitude small targets (such as anti-ship missiles and aircraft) on the sea surface. [0003] By building a simulation model of radar sea surface low-altitude detection performance and using MATLAB simulation calculation tools, it is possible to analyze and obtain radar sea surface ultra-low-altitude detection performance parameters such as the location and range of blind spots, blind compensation performance, maximum low-altitude operating distance, and l...

AI Technical Summary

Problems solved by technology

[0004] 1) The model is only applicable to the interference area, and the far boundary of the interference area cannot be determined, and the simulation error outside the interference area increases significantly;

[0005] 2) The model does not consider the correlation between sea surface reflection coefficient and environmental parameters (seawater temperature, seawater salinity, sea conditions, etc.);

[0006] 3) The model cannot be applied to radars with separate transceiver antennas

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