DOI: 10.1002/2013JD020457
论文题名: Noise performance of the CrIS instrument
作者: Zavyalov V. ; Esplin M. ; Scott D. ; Esplin B. ; Bingham G. ; Hoffman E. ; Lietzke C. ; Predina J. ; Frain R. ; Suwinski L. ; Han Y. ; Major C. ; Graham B. ; Phillips L.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 23 起始页码: 13108
结束页码: 13120
语种: 英语
英文关键词: calibration
; CrIS
; JPSS
; noise
; Suomi NPP
; validation
Scopus关键词: Calibration
; Instruments
; Orbits
; Sensors
; Sounding apparatus
; Spectral resolution
; Weather forecasting
; White noise
; CrIS
; JPSS
; noise
; Suomi NPP
; validation
; Infrared devices
; calibration
; climate modeling
; climate prediction
; data set
; FTIR spectroscopy
; model validation
; noise
; numerical model
; sensor
; spectral resolution
英文摘要: The Cross-track Infrared Sounder (CrIS) is a spaceborne Fourier transform spectrometer (FTS) that was launched into orbit on 28 October 2011 onboard the Suomi National Polar-orbiting Partnership satellite. CrIS is a sophisticated sounding sensor that accurately measures upwelling infrared radiance at high spectral resolution. Data obtained from this sensor are used for atmospheric profiles retrieval and assimilation by numerical weather prediction models. Optimum vertical sounding resolution is achieved with high spectral resolution and multiple spectral channels; however, this can lead to increased noise. The CrIS instrument is designed to overcome this problem. Noise Equivalent Differential Radiance (NEdN) is one of the key parameters of the Sensor Data Record product. The CrIS on-orbit NEdN surpasses mission requirements with margin and has comparable or better performance when compared to heritage hyperspectral sensors currently on orbit. This paper describes CrIS noise performance through the characterization of the sensor's NEdN and compares it to calibration data obtained during ground test. In addition, since FTS sensors can be affected by vibration that leads to spectrally correlated noise on top of the random noise inherent to infrared detectors, this paper also characterizes the CrIS NEdN with respect to the correlated noise contribution to the total NEdN. Lastly, the noise estimated from the imaginary part of the complex FTS spectra is extremely useful to assess and monitor in-flight FTS sensor health. Preliminary results on the imaginary spectra noise analysis are also presented. Key Points CrIS calibration/validation efforts On-orbit CrIS instrument noise performance Imaginary noise analysis to assess instrument performance ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63093
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Space Dynamics Laboratory, 1694 North Research Park Way, Logan, UT 84341, United States; ITT Exelis, Fort Wayne IN, United States; NOAA Center for Satellite Applications and Research (STAR), Camp Springs MD, United States
Recommended Citation:
Zavyalov V.,Esplin M.,Scott D.,et al. Noise performance of the CrIS instrument[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(23)