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研究了一种双条带成像处理方案。该模式是对环视成像模式的扩展,有效地提高了图像场景范围和成像处理效率。分析了双条带SAR成像处理的基本流程,针对雷达运动平台的实际运动情况,提出了一种满足图像分辨率和无缝拼接要求的系统实现方案以及相关系统参数的优化设计准则。借助点目标仿真和某型机载环视SAR外场试飞实测数据对该成像处理方案的有效性进行了充分地验证处理。
A two-band imaging processing scheme is studied. The model is an extension of the look-around imaging mode, effectively improving the image scene range and imaging processing efficiency. Aiming at the actual motion of the radar moving platform, a system implementation scheme that meets the requirements of image resolution and seamless splicing and the optimization design criteria of the related system parameters are analyzed. The effectiveness of the imaging processing scheme is fully verified by point-point simulation and some measured data from a flight-borne SAR indoor flight test.