一种斜视高分辨率SAR频谱自适应修正方法
By performing spectral shifting and boundary calculations on high-resolution SAR images, the problem of difficult evaluation of sidelobe characteristics under large squint mode was solved, and the two-dimensional distribution recovery of sidelobe energy was achieved, improving image quality and processing efficiency.
CN117434533BActive Publication Date: 2026-07-17XIAN INSTITUE OF SPACE RADIO TECH
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XIAN INSTITUE OF SPACE RADIO TECH
- Filing Date
- 2023-09-22
- Publication Date
- 2026-07-17
Smart Images
Figure CN117434533B_ABST
Abstract
一种斜视高分辨率SAR频谱自适应修正方法，针对SAR高分辨率大斜视观测模式，通过二维频谱搬移、信号频率支撑域边界计算、多普勒支撑域边界计算、图像频谱修正和二维频谱恢复等处理，实现了图像二维频谱的自适应修正，恢复了旁瓣能量的二维分布，解决了由于高分辨率和斜视下频谱变形所导致旁瓣多角度扩散的影响。处理效率和应用效能高。
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