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A transponder system dedicating for the on-orbit calibration of China's new-generation satellite altimeter and scatterometer
Guo, Wei; Gong, Xiao-Yan; Xu, Xi-Yu; Liu, He-Guang; Xu, Chuan-Dong; Du, Yue-Heng; Guo, W. (guowei@mirslab.cn)
Department微波遥感部
Source PublicationProceedings of 2011 IEEE CIE International Conference on Radar, RADAR 2011
2011
Pages22-25
Language英语
ISBN9781424484416
AbstractIn this paper a transponder system dedicating for the on-orbit calibration of the two primary active microwave sensors: radar altimeter and radar scatterometer are designed. The three major parameters: the height measured by the altimeter, and the backscattering coefficient measured by the altimeter and the scatterometer can be fulfilled in the same system. The transponders proposed in this paper is a pulse-regenerator, which can down-converted the altimeter/ scatterometer Radio Frequency (RF) signal to the baseband and record the digital samples, then regenerate a modulated signal which is to the altimeter/ scatterometer receiver. The power, triggering time and the modulation are all adaptive, so the transponder has much greater flexibility than the conventional bent-pipe (pulse-repeated) transponder, which only offer simple time-delay or attenuation / amplification at the RF stage. In this paper the backgrounds are reviewed, the implementations of a new transponder system are introduced, and the calibration rationales are described. Particularly, the configuration of three transponders is optimized to exploit the potential of the new technology. © 2011 IEEE.; In this paper a transponder system dedicating for the on-orbit calibration of the two primary active microwave sensors: radar altimeter and radar scatterometer are designed. The three major parameters: the height measured by the altimeter, and the backscattering coefficient measured by the altimeter and the scatterometer can be fulfilled in the same system. The transponders proposed in this paper is a pulse-regenerator, which can down-converted the altimeter/ scatterometer Radio Frequency (RF) signal to the baseband and record the digital samples, then regenerate a modulated signal which is to the altimeter/ scatterometer receiver. The power, triggering time and the modulation are all adaptive, so the transponder has much greater flexibility than the conventional bent-pipe (pulse-repeated) transponder, which only offer simple time-delay or attenuation / amplification at the RF stage. In this paper the backgrounds are reviewed, the implementations of a new transponder system are introduced, and the calibration rationales are described. Particularly, the configuration of three transponders is optimized to exploit the potential of the new technology. © 2011 IEEE.
Conference Name6th International Conference on Radar, RADAR 2011
Conference DateOctober 24, 2011 - October 27, 2011
Conference PlaceChengdu, China
Indexed ByEI
Document Type会议论文
Identifierhttp://ir.nssc.ac.cn/handle/122/3347
Collection微波遥感部
Corresponding AuthorGuo, W. (guowei@mirslab.cn)
Recommended Citation
GB/T 7714
Guo, Wei,Gong, Xiao-Yan,Xu, Xi-Yu,et al. A transponder system dedicating for the on-orbit calibration of China's new-generation satellite altimeter and scatterometer[C]:IEEE Computer Society, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States,2011:22-25.
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