Title :
Some considerations about the in-orbit calibration of spaceborne rotating fan beam radar scatterometer
Author :
Dong Xiaolong ; Liu Daozhi ; Zhu Jintai ; Zhu Di ; Lin Wenming
Author_Institution :
Key Lab. of Microwave Remote Sensing, Center for Space Sci. & Appl. Res., Beijing, China
Abstract :
Rotating fan-beam scatterometer (RFSCAT) is a new kind of spaceborne scatterometer for ocean surface vector wind (OSVW) measurement. In this paper, some consideration about the calibration of a Ku-band RFSCAT is presented. Both internal calibration and external calibration are described. Preliminary analyses about the internal calibration precision and external calibration accuracy are presented. Based on the method of Long, et al, external calibration method for RFSCAT is proposed. Some simulation results for the external calibration with natural extended targets, such as Amazon forest, are presented.
Keywords :
atmospheric techniques; calibration; remote sensing by radar; spaceborne radar; wind; Amazon forest; Ku-band RFSCAT; external calibration accuracy; in-orbit calibration; internal calibration precision; ocean surface vector wind measurement; rotating fan beam radar scatterometer; spaceborne scatterometer; Antennas; Backscatter; Calibration; Insertion loss; Radar measurements; Receivers; Spaceborne radar; calibration; extended target; ocean surface vector wind; rotating fan-beam scatterometer;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2011 IEEE International
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4577-1003-2
DOI :
10.1109/IGARSS.2011.6049293
