摘要
步进频率雷达具有较长的相干时间,因而对目标的运动较为敏感。文中分析了目标在匀速径向运动和匀加速运动情况下,运动对步进频率雷达回波相位的影响。详细分析了速度造成的耦合时延及二次相位干扰项、加速度造成的二次、三次相位干扰项对雷达成像以及分辨率的影响,分析由此造成的图像峰值降低,回波发散,甚至图像分裂,并用MATLAB语言对其进行了仿真。仿真结果也验证了分析的正确性。
Stepped Frequency(SF) radar is sensitive to object motion, because of it's longer coherent time. The effect caused by object motion on echo phase of SF radar is analyzed. The effects of velocity and acceleration on radar imaging and resolution are discussed in detail and simulated with MATLAB. The analysis is verified by the simulation.
出处
《现代雷达》
CSCD
北大核心
2005年第12期49-52,共4页
Modern Radar
关键词
步进频率雷达
多普勒效应
合成距离像
图像回绕
stepped frequency radar
radar Doppler effect
synthetic range profile image foldover