Detection shift of the Earth’s surface with space-based SAR in a single-pass squint technique

The design features and main characteristics of a radar interferometric complex for remote sensing of the Earth based on a space-based radar with a synthetic aperture antenna operating in a squint single-pass technique are considered. The performance of the proposed approach to design a system for accurately detecting movements of the earth's surface using raw radar data obtained during experimental flights and open radar data was tested. It is shown that the radar method of differential interferometry presented in the work using the proposed scheme for sensing the Earth's surface makes it possible to measure movements of the Earth's surface with high detail and accuracy, both over short and long time intervals. The possibility of using the proposed scheme for constructing an interferometric complex with one radar in orbit to solve the problems of obtaining additional information about the state of the Earth's surface has been demonstrated. positional space-based SAR operating in the frontal viewing mode. The first experimental results are presented on the detection and display of differential movements of the underlying surface on two-dimensional radar images by using multidimensional difference-phase processing of paired signals using the method of differential interferometry using a single-position radar with a space-based synthetic aperture antenna operating in a squint single-pass technique.