  In this paper, the magnitude and phase of the reconstructed point targets in
SAR imaging are studied quantitatively by using inverse crime. Two scenarios,
one with single point target in the imaging area and the other with two point
targets, are considered. The theorems on the magnitude and phase are
established and proved for each scenario. In addition, several numerical
examples are presented and the numerical results show that they agree with the
corresponding theorems. This study is useful for appreciating the limitations
of formulating inversion algorithms based on simplistic point target building
blocks.
