基于DEM和SAR的航海雷达地形回波仿真

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

系统仿真学报 ›› 2020, Vol. 32 ›› Issue (3): 518-524.doi: 10.16182/j.issn1004731x.joss.18-0275

基于DEM和SAR的航海雷达地形回波仿真

索永峰, 杨神化, 陈国权, 向祝强

集美大学航海学院,福建厦门 361021

收稿日期:2018-05-10 修回日期:2018-11-21 出版日期:2020-03-18 发布日期:2020-03-25
作者简介:索永峰(1981-),男,河南沁阳,博士,副教授,研究方向为航海仿真,航海信息化。
基金资助:
国家自然科学基金(51579114,51879119),福建省自然基金(2018J01484)

Maritime Radar Terrain Echo Simulation Based on DEM and SAR

Suo Yongfeng, Yang Shenhua, Chen Guoquan, Xiang Zhuqiang

Navigation College, Jimei University, Xiamen 361021, China

Received:2018-05-10 Revised:2018-11-21 Online:2020-03-18 Published:2020-03-25

摘要/Abstract

摘要： 由于仿真地形数据库制图工作量巨大,因此目前航海雷达仿真中物标雷达反射率模拟的工程应用受到极大限制。提出基于DEM(Digital Elevation Model)和同波段SAR(Synthetic Aperture Radar)数据反演,获取物标反射率信息,作为地表雷达反射率仿真的依据,结合雷达方程,建立航海雷达地表反射率模型;考虑雷达回波地形的高程遮挡关系,给出了航海雷达地形回波生成算法,GPU编程实现。通过与传统仿真方法和真实雷达回波图像的比较,表明该算法与真实雷达回波更接近,更能体现地表回波图像的雷达反射率细节和不同量程下的回波图像变化。

关键词: 雷达仿真, SAR(Synthetic Aperture Radar), DEM(Digital Elevation Model), 雷达反射率

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

中图分类号:

TP391.9

索永峰, 杨神化, 陈国权, 向祝强. 基于DEM和SAR的航海雷达地形回波仿真[J]. 系统仿真学报, 2020, 32(3): 518-524.

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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基于DEM和SAR的航海雷达地形回波仿真

Maritime Radar Terrain Echo Simulation Based on DEM and SAR

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