Application of Compressive Sensing to Radar Altimeter Design

	Application of Compressive Sensing to Radar Altimeter Design
	Zhang, Yunhua; Dong, Xiao; Zhai, Wenshuai
	2015
会议名称	Conference on Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions
会议日期	42270
会议地点	Toulouse, FRANCE
关键词	Interferometric radar altimeter interferometric phase echo waveform sampling time window (STW) compressive sensing (CS) downsampling
页码	963809
通讯作者	Zhang, YH (reprint author), Chinese Acad Sci, Key Lab Microwave Remote Sensing, POB 8701, Beijing 100190, Peoples R China.
英文摘要	WWe propose to apply the compressive sensing technique to the design of satellite radar altimeter for increasing the sampling time window (STW) while keeping the same data rate so as to enhance the tracking robustness of an altimeter. A satellite radar altimeter can measure the range between the satellite platform where it is aboard and the averaged sea surface with centimeter level accuracy. The rising slope of the received waveform by altimeter contains important information about the sea surface, e.g. the larger the slope of the waveform, means the smoother the sea surface. Besides, the half-power point of the slope refers to the range information. For satellite altimeter, due to the rising slope just occupies fewer range bins compared with the whole range bins illuminated by the long pulse signal, i.e. the signal is sparse in this sense, thus compressive sensing technique is applicable. Altimeter echoes are simulated and the waveforms are constructed by using the traditional method as well as by compressive sensing (CS) method, they are very well agreed with each other. The advantage of using CS is that we can increase the sampling time window without increasing the data, thus the tracking capability can be enhanced without sacrificing the resolution.
收录类别	EI ; CPCI
会议主办者	SPIE
会议录	REMOTE SENSING OF THE OCEAN, SEA ICE, COASTAL WATERS, AND LARGE WATER REGIONS 2015
语种	英语
ISSN号	0277-786X
ISBN号	978-1-62841-848-4
内容类型	会议论文
源URL	[http://ir.nssc.ac.cn/handle/122/5362]
专题	国家空间科学中心_微波遥感部
推荐引用方式 GB/T 7714	Zhang, Yunhua,Dong, Xiao,Zhai, Wenshuai. Application of Compressive Sensing to Radar Altimeter Design[C]. 见:Conference on Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions. Toulouse, FRANCE. 42270.