摘要
为了寻找一种可行的成像算法,提高分布式合成孔径雷达成像分辨率,建立了分布式合成孔径雷达系统的一种简化模型,即线性分布阵列,分析了提高合成孔径雷达方位分辨率的原理,并讨论了在不同方位谱的情况下,借用通信系统中的扩频思想,通过多普勒频谱合成(增大等效合成孔径)来提高方位向分辨率。最后给出了仿真实验及结论,证实该种方法的有效性。
To find a feasible imaging algorithm and improve distributed SAR image resolution,the paper establishes a simplified model,linear array,for distributed SAR system,and the principle for improving SAR resolution in azimuth is analyzed. The following steps illustrate how to improve azimuth resolution through synthesizing spectrums to a wider azimuth spectrum in different cases of spectrum location, using spectrum spreading idea for reference. In the end ,computer simulations are used to test the validity of this new algorithm and some conclusions are given.
出处
《现代电子技术》
2007年第5期51-53,共3页
Modern Electronics Technique
