IDS Workshop 2006Abstract

Spectral characteristics of the DORIS position time series

Dr Karine LE BAIL⁽¹⁾

⁽¹⁾ IGN/LAREG - OCA/GEMINI, Marne La Vallée, FRANCE

Session theme: Stations coordinates

Abstract

Using a new method coupling the Principal Component Analysis applied in the Time domain and the Allan variance, we access the noise on the three-dimensional non-linear signal in the DORIS station coordinates. Analyzing 122 stations from three DORIS Analysis Centers solutions, the dominant spectrum is a white noise at the 10-45 mm level, except for high latitude stations that have flicker noise at the 20 mm level. In this study, we investigate relations between the obtained noise level and some technical and geographical effects as the station rejuvenation project, the monumentation and the South Atlantic Anomaly.

 
Corresponding author:

Dr Karine LE BAIL
IGN/LAREG - OCA/GEMINI
6-8 AVENUE BLAISE PASCAL - CHAMPS SUR MARNE
77455 MARNE LA VALLEE CEDEX 2
FRANCE
Phone: 33 (0) 1 64 15 32 63
Fax: 33 (0) 1 64 15 32 53
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