Spaceborne GNSS-Receiving System Performance Prediction and Validatio (original) (raw)

Spaceborne high-end geodetic-type dual-frequency Global Navigation Satellite System (GNSS) receivers have become an enabling technology for contemporary earth observation missions in Low-Earth Orbits (LEO). Such receivers deliver measurements for space vehicle Precise Orbit Determination (POD) with position accuracy of a few centimeters to geo-locate the measurements taken by other sensors. Roughly speaking, the more precise an earth-observation instrument, the more accurate its position must be determined in order to be able to produce accurate measurement maps. In addition, real-time positioning, accurate within tens of meters - a byproduct of POD-receivers - performed for internal purposes, readily supports the Attitude and Orbit Control Subsystem (AOCS) of the host Spacecraft (S/C). While the notion of recurrence and off-the-shelf availability is reflected in customer price and delivery schedule expectations, POD-receivers are typically procured according to mission specificatio...