The Performance Analysis of Dual-Antenna Squint Interferometric Sar Ocean Current Measurement Mode

A squint dual-antenna interferometric SAR (AT-InSAR) ocean current measurement method based on the traditional cross-track InSAR is studied in this paper. In the imaging geometry of cross-track InSAR, we can get an along-track baseline component in the presence of squint, which can be used for ocean current measurement. This additional working mode can extend the application efficiency of DEM acquisition InSAR satellites when flying over the ocean. The imaging geometry of dual-antenna squint interferometric SAR is established, and ocean current velocity measurement principle is given. Mainly, the ocean current velocity measurement performance of this novel working mode is analyzed.