Xi’an Institute of Space Radio Technology;
China Academy of Space Technology;
Xi’an 710100;
China;
National Key Laboratory of Science and Technology on Space Microwave;
Xi’an 710100;
China;
Institute of Oceanology and Center for Ocean Mega-Science;
Chinese Academy of Sciences;
and Qingdao National Laboratory for Marine Science and Technology;
Qingdao 266071;
China;
dual-frequency; polarimetric; scatterometer; wind; vector; retrieval;