Maritime Radar Terrain Echo Simulation Based on DEM and SAR

doi:10.16182/j.issn1004731x.joss.18-0275

Abstract

Abstract: Due to the huge amount of work required for terrain database building, the application of navigation radar simulation on the reflectivity of land object has been greatly limited. A novel radar simulation method is proposed based on the DEM(Digital Elevation Model) data and the same-band SAR(Synthetic Aperture Radar) reflection data. The target reflectance information is obtained, which is used as the basis for the surface radar reflectivity simulation. In combination with the radar equations, the surface reflectivity model of the navigation radar is established. Taking into account the elevation shielding relationship of the radar echo topography, an algorithm of terrain radar echo generation for navigation radar is yielded, and the model is implemented by the GPU programming. Experimental results prove that the proposed algorithm is closer to the real radar echo than the traditional simulation method, which can reflect radar reflectivity details and the echo image changing under different ranges.

Key words: radar simulation, SAR(Synthetic Aperture Radar), DEM(Digital Elevation Model), radar reflectivity

CLC Number:

TP391.9

Suo Yongfeng, Yang Shenhua, Chen Guoquan, Xiang Zhuqiang. Maritime Radar Terrain Echo Simulation Based on DEM and SAR[J]. Journal of System Simulation, 2020, 32(3): 518-524.

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