ABSTRACT
In this chapter, we will discuss how an SAR image is generated, how a radar equation is prepared for an SAR image, and how SAR differs from real aperture radar (RAR). The SAR imaging process consists of two one-dimensional correlations of raw data with references, while RAR simply receives the backscatter from the region of interest or the instantaneous field of view. Thus, the difference is correlation. We will derive the radar equations for SAR and RAR theoretically, compare them, and discuss how the correlation affects the normalized radar cross section measurement accuracy.
