Characterization of MLS 1/ fnoise parameters

Autor:	Robert Jarnot, C. L. Lau, G. E. Peckham, Robert Suttie
Rok vydání:	1996
Předmět:	Microwave Limb Sounder Physics Radiometer General Earth and Planetary Sciences Satellite White noise Filter (signal processing) Noise (electronics) Smoothing Remote sensing Interpolation
Zdroj:	International Journal of Remote Sensing. 17:3751-3759
ISSN:	1366-5901 0143-1161
DOI:	10.1080/01431169608949182
Popis:	Optimal filters provide minimum variance interpolation and smoothing of noisy data, but the form of the noise power spectrum must be known for their design. We analyse data from the Microwave Limb Sounder (MLS) experiment onboard the Upper Atmosphere Research Satellite (UARS) to quantify parameters describing the noise spectra. MLS views space as part of its calibration sequence providing regular samples of the radiometer output. From these samples we determine breakpoint frequencies at which the spectral power density of the low frequency l/ f equal to that of the white noise. Breakpoint frequencies were in the range from 0005 to 002Hz for the 90 filter channels of the MLS. A method was developed to distinguish between 11/ f and systematic disturbances caused by cyclic changes in the operating environment as the spacecraft traverses its orbit.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::54cc48b88b296b878a482049211f19a6 https://doi.org/10.1080/01431169608949182 Zobrazit plný text záznamu