A Time Sequence Design Method Using a Phased Array Antenna to Simultaneously Realize Three Functions of Scatterometer, Spectrometer and SAR

The joint observation of multiple sensors is the main means for synchronously obtaining large-coverage, high-precision, and multi-scale ocean wind and wave information. The higher the synchronization of these data in time and space, the more conducive to improving the accuracy of wind and wave information. Therefore, this paper proposes an idea of simultaneously realizing the three functions of spectrometer, scatterometer and SAR by sharing a phased-array antenna, and a very small receiving antenna is also carried to enhance the flexibility of time sequence. The constraints on the time sequence of the pulse transmission and reception for the three functions working simultaneously are derived in detail. Subsequently, a joint design method for the pulse repetition frequencies (PRFs) of three functions is introduced, and simulation verification is carried out by zebra diagrams.