Design and ground validation technique of HY-2Ascatterometer

The HY-2A satellite was first launched in August of 2011, the microwave scatterometer as one of the main loads, is primarily applied in sea surface wind observation. HY-2A scatterometer used two pencil beam conical scan system, and the radar worked in Ku band. The characteristics of scatterometer are tested in laboratory used the Echo Wave simulator and function validation are performed by airborne experiment. System composition and main performance requirements are presented in this paper, and airborne experiment validation scheme and its results are also introduced. On-orbit test results show that expected measurement requirements are achieved.