基于传感信息的合成孔径雷达图像仿真系统

Emulational System of SAR Image Based on Sensor Information

合成孔径雷达(SAR)是一种高分辨率微波成像雷达,在军事侦察、地形测绘等领域发挥着重要作用。目前SAR仿真大多是对雷达成像算法及干扰对抗的仿真,而利用传感信息进行雷达可视化仿真的研究不多。为满足军事训练的需要,提高雷达分辨率和得到清晰测绘图像,建立了战场环境数据库的传感信息模型和半实物的SAR雷达仿真平台,利用Radar-works对真实地貌和军事目标的散射截面进行计算,逼真地仿真了SAR的传感器效果并解决了图像分辨能力偏低和测绘带过窄的问题。通过建立颜色空间模型实现了在复杂气象条件下SAR对强雷雨云回波的屏幕测绘,解决了军事训练中的难题。

Synthetic Aperture Radar is a high-resolution microwave imaging radar,which plays an important role in areas such as military reconnaissance and geological prospecting. The current SAR Simulation Systems are mostly for radar imaging algorithm and interference,while the ones which use sensor information for visual simulation are not so common. Therefore,battlefield environment model which is based on sensor information data and the airborne SAR simulation platform was born. Calculation on RCS is done with Radarworks to simulate the effect of SAR sensor,solve the question of low resolving power and narrow the swath width. Screen mapping on Echo Power of thundercloud with SAR is realized under complex weather condition by founding color matrix,which solves the difficulty in military training.