A NEW APPROACH TO COMPRESS MULTICARRIER PHASE-CODED SIGNALS

摘要

Multicarrier Phase Coded signals have been recently introduced to achieve high range resolution in radar systems. As in single carrier phase coded radars, the conventional method for compression of these signals is based on using matched filter or direct computation of an autocorrelation function. In this paper we propose a new method based on Fast Fourier Transform (FFT) that has lower computational complexity compared to the traditional approach. It has been proved that the proposed method is mathematically equivalent to matched filtering, so there is no processing loss. This approach can also be used to estimate the channel characteristics at any subcarrier frequencies.