Implementation of wideband Radar to ISAR imaging using Modified Fast Chirp Fourier Transform

Abstract

In this paper, ISAR imaging for a wide frequency range is explained, by using a proposed method known as Modified Fast Chirp Fourier Transform(MFCFT). Radar imaging is generally performed in the L,S and C band frequency, ranging from 1-8 GHz. But, sometimes it becomes necessary to image a target in wideband frequency i.e., from 1-40GHz range. Here, in this paper, ISAR imaging is done for wideband (1- 40GHz) frequencies. When imaging is done in this range of frequencies, the basic methods like RD and RID fails to reproduce images for this wide range, whereas the proposed method reproduces images with high resolution.