The Implementation of Chirp Scaling Algorithm Via Fast Fourier Transform

Abstract

Synthetic aperture radar uses the data collected by rather small antenna in the form of electromagnetic waves to image with high resolution imaging. This radar uses sending and receiving antennas or microwave pulses while moving forward as an advantage which resembles to the large antennas. In more simple terms, such forms of sending and receiving data by small antenna resemble to data which have been sent and received by an antenna during flight. To produce image from raw data four algorithms have been developed so far. Among these algorithms Chirp scaling with excellent power of the focusing on the target (higher resolution), optimized processing, and simple implementation has been cared for. The aim of this paper is to implement Chirp scaling algorithm using the Fast Fourier Transform in order to increase processing speed and to produce high-resolution images. The simulation result indicate that this proposed scheme is more accurate than other implementation.