Analysis on parameters and imaging algorithm of squint circular trace scanning SAR

摘要

The squint circular trace scanning synthetic aperture radar (squint CTSSAR) provides a practical option to realize fast large area synthetic aperture radar (SAR) imaging. However, its squint angle and unique flight trajectory result in its difference from other SAR imaging modes. This paper establishes the squint CTSSAR geometry model, and bases on which analyzes the related parameter characteristics, revealing the universality of the squint CTSSAR imaging mode. In addition, the range order accuracy is analyzed and an effective imaging algorithm is provided. In the end, the corresponding simulated experiments validate the feasibility and the effectiveness of the proposed imaging method.