PROJECT TITLE :

Synthetic aperture radar imaging using nonlinear frequency modulation signal

ABSTRACT:

During this paper, a brand new nonlinear frequency modulation (NLFM) waveform is developed that may be used as a transmitted chirp in artificial aperture radar (SAR) imaging to improve the imaging quality compared to a linear frequency modulation (LFM) chirp signal. The new NLFM is made based mostly on piecewise linear functions, which are optimized using multi-objective optimization. Different signal processing algorithms are investigated so as to use NLFM because the transmitted chirp in a very SAR system. In addition, a changed motion compensation (MC) algorithm using navigation data is proposed for the vary-Doppler algorithm. Strip-map SAR geometry is taken into account to get a SAR raw signal, in order to validate the new offered chirp signal and the proposed MC algorithm.