Characteristics of Point Scattering in Azimuth-Invariant Bistatic SAR

Along with the monostatic radar imaging configuration, as a standard approach for Synthetic Aperture Radar imaging, new generation ideas of radar imaging geometry under the name of bistatic configurations are emerging. Due to the separation of the transmitter and receiver positions in bistatic SAR systems, different configurations can be imagined for them. One of these configurations, which is more well-known, is the azimuth-invariant configuration. In this configuration, the receiver follows the transmitter in a fixed azimuth path, collates the ground targets’ response in the forward-looking mode and at different angles, and generates the final SAR image. This SAR image is comparable to the monostatic in various aspects such as resolution, signal-to-noise ratio (SNR), etc. In this paper, some of these aspects will be evaluated. The results show with the increase of bistatic angle, both of the resolution and SNR are worse.