摘要
由于避免了插值计算，在大前视角和大范围成像时，ｃｈｉｒｐｓｃａｌｉｎｇ算法（ＣＳＡ）的性能优于距离多普勒算法（ＲＤＡ）．自聚焦算法在ＳＡＲ成像处理中通常是必不可少的，但是现有的自聚焦算法几乎都是与ＲＤＡ相结合的．本文提出了能够将自聚焦算法与ＣＳＡ相结合的方法，使得ＣＳＡ更具有实用性．本文同时也提出了将基于运动传感器的运动补偿和基于雷达数据的自聚焦算法与ＣＳＡ结合的方法．
The chirp scaling algorithm(CSA) performs better than the range Doppler algorithm(RDA) under deep squint angle and large imaging scene by avoiding interpolation. For SAR image formation process, autofocus algorithm is usually necessary, but most current autofocus algorithms are based on RDA. This paper presents an approach to combine the autofocus algorithm with CSA which will be more practical. This paper also suggests a method to combine motion compensation based on moving sensor and autofocus algorithm based on radar data with CSA. This method is very suitable for high resolution airborne SAR.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
1999年第4期398-401,共4页
Journal of Beijing University of Aeronautics and Astronautics
关键词
信息处理
合成孔径雷达
自聚焦
运动补偿
CSA
information processing
synthetic aperture radar
self focusing
motion compensation
