作者
Jun Yang, Guang-Cai Sun, Jianlai Chen, Yufeng Wu, Mengdao Xing
发表日期
2014/7/13
研讨会论文
2014 IEEE Geoscience and Remote Sensing Symposium
页码范围
608-611
出版商
IEEE
简介
Airborne SAR imaging processing needs to estimate motion error to compensate non-ideal trajectory. In this paper, a subaperture imaging scheme for wide azimuth beam airborne SAR systems is proposed. First, the motion error is estimated from the subaperture data and the modified range migration algorithm is applied to obtain the coarse focused image, whose azimuth resolution corresponds to the subaperture Doppler bandwidth. The subaperture image is then projected into a fine grid image, whose coordinates is defined by the imaging geometry. As the subaperture data stream is coming, the azimuth resolution of the grid image will become higher and higher. Finally, the fine image with the azimuth resolution corresponding to the full aperture data can be obtained. Since the motion error estimation is based on the sub-aperture data, the imaging processing is suitable for real-time SAR imaging.
引用总数
20172018201920201132
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