Frank G. Lemoine

TL;DR: In this paper, the authors explore the possibility of flying multiple satellite pairs to increase the sampling frequency of the mission, thus increasing the spatial resolution of the gravity field products, and find that an optimal architecture consists of a polar pair of satellites coupled with a pair inclined at 72 degrees, both in 13-day repeating orbits.

TL;DR: In this paper, a technique for the analysis of low-low intersatellite range-rate data in a gravity mapping mission is explored, based on standard tracking data analysis for orbit determination but using a spherical coordinate representation of the 12 epoch state parameters describing the baseline between the two satellites.

TL;DR: The International DORIS Service has now started its scientific activity on a routine basis for the International Earth Rotation and Reference Systems Service (IERS) and the Global Geodetic Observing System (GGOS).

TL;DR: In this paper, the authors calculated the density of the south polar layered deposits by combining the gravity field obtained from initial results of radio tracking of the Mars Reconnaissance Orbiter with existing surface topography from the Mars Orbiter Laser Altimeter on the Mars Global Surveyor spacecraft.

TL;DR: In this article, the authors used crossover constraint equations derived from short passes of the Mars Observer Laser Altimeter (MOLA) data to improve orbit and attitude knowledge for the Mars Global Surveyor.