Bistatic hybrid spaceborne/airborne SAR: Inverse sliding spotlight imaging

Hybrid spaceborne/airborne bistatic SAR has been focused in bistatic SAR research. Considering the great differences between the velocity of satellite and airplane, receiver operates in the inverse sliding spotlight mode. This paper discussed the special geometry of hybrid spaceborne/airborne bistatic SAR, as well as the variation of azimuth resolution. The equivalent two-dimensional spectrum is obtained using the "Single-line range model", and then the variant equivalent parameters are approximated with the average equivalent parameters. In the end, the monostatic NCS algorithm is applied to imaging. Simulated result shows that the equalization is effective.