SAR raw data simulation including arbitrary trajectory deviations in hybrid domain

To simulate synthetic aperture radar (SAR) raw data of extended scenes in the presence of arbitrary trajectory deviations, an efficient simulation scheme in hybrid domain is proposed. We firstly present a novel target-to-antenna distance model which takes the three-dimensional components of the trajectory deviations into consideration. Then a general and compact hybrid domain formulation of the SAR raw data in the presence of arbitrary trajectory deviations is obtained. Based on the formulation, a simulation scheme which relies on 1-D range Fourier domain processing followed by azimuth time domain integration is proposed. Some simulation results are finally presented in order to verify the effectiveness of the proposed simulation scheme.