A Modified Nonlinear Chirp Scaling Algorithm for Air-borne Ice Radar

35th International Symposium on Remote Sensing of Environment

地球科学;生态环境科学

Bo, Zhao^1 ; Shinan, Lang^1 ; Xiaojun, Liu^1 ; Guangyou, Fang^1

Key Laboratory of Electromagnetic Radiation and Sensing Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China^1

关键词: Echo signals;    Non-linear chirp scaling;    Numerical experiments;    Phase compensation;    Propagation velocities;    Radar data;    Refraction effects;    Spatial geometry;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/17/1/012180/pdf
DOI  :  10.1088/1755-1315/17/1/012180

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this paper, a modified nonlinear chirp scaling (MNLCS) algorithm for air-borne ice radar data is proposed. The spatial geometry based on the two-layer medium is analyzed for the studying of MNLCS. The algorithm can compensate the refraction effects and the propagation velocity changes in different mediums automatically, and can improve the focusing feature of the scatters. According to the model of echo signal, the phase compensation factors and realized steps of the algorithm are given. Numerical experiments are executed. The experimental results show the effectiveness of the proposed algorithm.