摘要
弹载条带式SAR信号特点表现为小的距离弯曲量,当分辨率要求不是特别高时,若最大距离弯曲量小于一个距离分辨单元时可忽略不计,而只考虑距离走动量的校正。针对这一特点提出了一种在频域对距离迁移的线性项即距离走动校正的成像方法,并提出了距离误差校正和图像几何校正相结合的方法,使得成像效率更高。仿真成像结果验证了该方法的可行性。
The signal of missile-borne strip SAR has a feature of small range curvature,when the request of resolution is not very high , the range curvature can be ignored if the maximum range curvature is smaller than a range resolution cell. This paper presents an imaging method of correcting range migration in frequency domain, and a method of combining the rang error correction and geometry correction,which can make the imaging efficiency better. Finally, simulation results verify the method.
出处
《无线电工程》
2006年第5期39-41,49,共4页
Radio Engineering
关键词
弹载SAR
几何校正
成像方法
missile-borne SAR
geometry correction
imaging method
