DOI: 10.1002/grl.50695
论文题名: De-noising of passive and active microwave satellite soil moisture time series
作者: Su C.-H. ; Ryu D. ; Western A.W. ; Wagner W.
刊名: Geophysical Research Letters
ISSN: 0094-8767
EISSN: 1944-8498
出版年: 2013
卷: 40, 期: 14 起始页码: 3624
结束页码: 3630
语种: 英语
英文关键词: de-noising
; digital signal processing
; Satellite soil moisture
; spectral analysis
Scopus关键词: Conjugate frequencies
; De-noising
; In-situ measurement
; Microwave retrieval
; Satellite soil moisture
; Semi-empirical modeling
; Southeast australia
; Surface soil moisture
; Digital signal processing
; Passive filters
; Power spectral density
; Random errors
; Satellites
; Signal processing
; Soil moisture
; Spectrum analysis
; Systematic errors
; Active filters
; filter
; frequency analysis
; in situ measurement
; microwave radiation
; satellite data
; satellite imagery
; soil moisture
; spectral analysis
; stochasticity
; Australia
; Murrumbidgee Basin
; New South Wales
英文摘要: Satellite microwave retrievals and in situ measurements of surface soil moisture are usually compared in the time domain. This paper examines their differences in the conjugate frequency domain to develop a spectral description of the satellite data, suggesting the presence of stochastic random and systematic periodic errors. Based on a semiempirical model of the observed power spectral density, we describe systematic designs of causal and noncausal filters to remove these erroneous signals. The filters are applied to the retrievals from active and passive satellite sensors and evaluated against field data from the Murrumbidgee Basin, southeast Australia, to show substantive increase in linear correlations. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880605232&doi=10.1002%2fgrl.50695&partnerID=40&md5=1615682ac221084ca93d9211a0abb6ef
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6031
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Department of Infrastructure Engineering, University of Melbourne, Engineering Block D, Parkville, VIC 3010, Australia
Recommended Citation:
Su C.-H.,Ryu D.,Western A.W.,et al. De-noising of passive and active microwave satellite soil moisture time series[J]. Geophysical Research Letters,2013-01-01,40(14).