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

Abstract

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.