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The concept of a multibeam delay/Doppler radar altimeter
Yang Shuangbao; Liu Heguang; Xu Ke; Xu Xiyu; Yang, SB (reprint author), Chinese Acad Sci, Key Lab Microwave Remote Sensing, Ctr Space Sci & Appl Res, 1 Nanertiao, Beijing 100190, Peoples R China.
Department微波遥感部
Source PublicationSENSORS, SYSTEMS, AND NEXT-GENERATION SATELLITES XV
2011
Pages817627
Language英语
ISSN0277-786X
ISBN978-0-81948-803-9
AbstractRadar altimeter can map the global geoid with high precision. This paper presents a new concept of mutibeam delay/Doppler radar altimeter which combines a liner array of nadir receivers and a nadir transmitter. The delay/Doppler technology is applied in the along track, and the array signal processing technology in the cross track. The key innovation in this concept is that fan-beams form in both along track and across track, and range correction is applied in across track as in along track, so that it could provide high precision with wide swath. But the 3D-matrix store and processing of the raw data from receivers are much more complicated than a conventional radar altimeter and a delay/Doppler radar altimeter. It could provide height profile with high precision for left scene and right scene, respectively, and leave small footprints at far range as at near range. It could also lead to uniform cross section in each resolution cell.; Radar altimeter can map the global geoid with high precision. This paper presents a new concept of mutibeam delay/Doppler radar altimeter which combines a liner array of nadir receivers and a nadir transmitter. The delay/Doppler technology is applied in the along track, and the array signal processing technology in the cross track. The key innovation in this concept is that fan-beams form in both along track and across track, and range correction is applied in across track as in along track, so that it could provide high precision with wide swath. But the 3D-matrix store and processing of the raw data from receivers are much more complicated than a conventional radar altimeter and a delay/Doppler radar altimeter. It could provide height profile with high precision for left scene and right scene, respectively, and leave small footprints at far range as at near range. It could also lead to uniform cross section in each resolution cell.
KeywordRadar Altimeter Synthetic Aperture Beamforming Delay Compensation
Conference NameConference on Sensors, Systems, and Next-Generation Satellites XV
Conference DateSEP 19-22, 2011
Conference PlacePrague, CZECH REPUBLIC
Indexed ByEI ; CPCI
Document Type会议论文
Identifierhttp://ir.nssc.ac.cn/handle/122/3387
Collection微波遥感部
Corresponding AuthorYang, SB (reprint author), Chinese Acad Sci, Key Lab Microwave Remote Sensing, Ctr Space Sci & Appl Res, 1 Nanertiao, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Yang Shuangbao,Liu Heguang,Xu Ke,et al. The concept of a multibeam delay/Doppler radar altimeter[C]. BELLINGHAM:SPIE-INT SOC OPTICAL ENGINEERING,2011:817627.
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