Evaluation of gps-based orbit solutions for sentinel-3a

Shailen Desai (Jet Propulsion Laboratory, United States)


Bruce Haines (Jet Propulsion Laboratory, United States)

Event: 2016 Ocean Surface Topography Science Team Meeting

Session: Precision Orbit Determination

Presentation type: Type Poster

In this study we present early results from our evaluation of the GPS tracking data from the Sentinel-3A mission. We assess both medium-accuracy and precise GPS-based orbit solutions, data noise, typical tracking metrics, as well as the capability to resolve integer ambiguities. We use sea surface height crossover variance and satellite laser ranging observations as independent metrics to evaluate our orbit solutions.

Preliminary results demonstrate radial orbit precision (as measured using orbit overlaps from neighboring daily solutions) of 3 mm (RMS). Using the pre-launch antenna calibration, the median of the daily RMS of dual-frequency ionosphere free phase and range residuals are 0.6 and 27 cm, respectively. The receiver is tracking an average of 7.5 GPS satellites, and continuous tracks have an average duration of 26 minutes.

Poster show times:

RoomStart DateEnd Date
Grande Halle Thu, Nov 03 2016,11:00 Thu, Nov 03 2016,18:00
Shailen Desai
Jet Propulsion Laboratory
United States