![]() IDS Workshop |
Spectral characteristics of the DORIS position time seriesDr 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.
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 E-mail: |