干旱区生态环境知识资源中心(Arid): Additional Reference Height Error Analysis for Baseline Calibration Based on a Distributed Target DEM in TwinSAR-L

Arid

DOI	10.3390/rs13142750
	Additional Reference Height Error Analysis for Baseline Calibration Based on a Distributed Target DEM in TwinSAR-L
	Qi, Yang; Wang, Yu; Hong, Jun; Du, Shaoyan
通讯作者	Wang, Y (corresponding author), Chinese Acad Sci, Aerosp Informat Res Inst, Natl Key Lab Sci & Technol Microwave Imaging, Beijing 100190, Peoples R China.
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2021
卷号	13 期号:14
英文摘要	In this paper, additional reference height errors, caused by the penetration depth and Signal to Noise Ratio (SNR) decorrelation in desert regions in L-band spaceborne bistatic interferemetric SAR, will introduce significant errors in nowadays baseline calibration method based on distributed target and consequent DEM products. To quantify these two errrors, this paper takes the TwinSAR-L mission as an example, gives an introduction of TwinSAR-L, outlines the theoretical baseline accuracy requirements that need to be satisfied in the TwinSAR-L mission and addresses the additional reference height errors caused by the penetration depth and SNR decorrelation in desert regions in general by taking the TwinSAR-L mission as an example. Based on ALOS-2 data from a dry desert region in the east of Xing Jiang, this paper quantitatively analyzes these additional reference height errors. The results show that the additional reference height errors resulted from the penetration depth and the SNR decorrelation are 1.295 m and 1.39 m, respectively, which would even cause 6.4 mm and 8.6 mm baseline calibration errors. These errors would seriously degrade the baseline calibration accuracy and the consequent DEM product quality. Therefore, our analysis is of great significance not only for baseline calibration, but also for high-quality DEM's generation, accuracy assessment and geophysical parameters' quantitative inversion and application.
英文关键词	baseline calibration TwinSAR-L penetration error SNR
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000677107000001
WOS关键词	BISTATIC SAR MISSION ; TANDEM-X ; WESTERN DESERT ; PENETRATION ; INSAR ; SOIL ; INTERFEROMETRY ; COMPENSATION ; WAVELENGTH ; SATELLITE
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364464
作者单位	[Qi, Yang; Wang, Yu; Hong, Jun; Du, Shaoyan] Chinese Acad Sci, Aerosp Informat Res Inst, Natl Key Lab Sci & Technol Microwave Imaging, Beijing 100190, Peoples R China; [Qi, Yang; Du, Shaoyan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Qi, Yang,Wang, Yu,Hong, Jun,et al. Additional Reference Height Error Analysis for Baseline Calibration Based on a Distributed Target DEM in TwinSAR-L[J],2021,13(14).
APA	Qi, Yang,Wang, Yu,Hong, Jun,&Du, Shaoyan.(2021).Additional Reference Height Error Analysis for Baseline Calibration Based on a Distributed Target DEM in TwinSAR-L.REMOTE SENSING,13(14).
MLA	Qi, Yang,et al."Additional Reference Height Error Analysis for Baseline Calibration Based on a Distributed Target DEM in TwinSAR-L".REMOTE SENSING 13.14(2021).