NSSC OpenIR  > 微波遥感部
Design and preliminary experiment of China imaging altimeter
Yunhua Zhang; Jingshan Jiang; Xiangkun Zhang; Ke Xu; Jingye Yan; Changhong Jiang; Liqing Lei; 北京8701信箱
Source PublicationProceedings of the Society of Photo-Optical Instrumentation Engineers (Spie)
AbstractThe design of the China Imaging ALTimeter (CIALT) and the flight experiment of its airborne model are presented in this paper. The system is aimed for providing observation measure for both oceanic applications and continental topographic mapping in the future. The motivation of this project is to develop a three dimensional imager fitted for small satellites with small volume, mass and power consumption. An experimental airborne model of the CIALT has been developed for verifying the design concept. The CIALT integrates three techniques together, i.e. the height measurement and tracking technique of traditional radar altimeter used for ocean applications, the synthetic aperture technique and the interferometric technique. A robust height tracker has been designed( for meeting the requirements of both oceanic surfaces and continental surfaces (including surfaces of ice continent). The synthetic aperture technique is used for achieving a higher azimuthal resolution along the cross range direction compared with that of a traditional altimeter. The interferometric technique is used for retrieving the height information corresponding to each image pixel and for boresight angle correction of the antennas, which is crucial for accurate height measurement. The CIALT is different from other proposed imaging altimeters, such as SAR altimeter and scanning altimeter, in which no height tracker is involved. Some key technologies regarding the development of imaging altimeter are addressed, such as the antenna design, the transmitter, the receiver and the robust tracking algorithm.
KeywordImaging Altimeter Oceanic Observation Topographic Mapping Small Satellite Sar Interferometry Ocog
Conference NameConference on Microwave Remote Sensing of the Atmosphere and Environment III
Conference Date2003
Conference PlaceHangzhou, Peoples R China
Indexed ByCPCI
Document Type会议论文
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
Yunhua Zhang,Jingshan Jiang,Xiangkun Zhang,et al. Design and preliminary experiment of China imaging altimeter[C]. BELLINGHAM:Spie-Int Soc Optical Engineering,2003:190-198.
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