Folkner, W. M.; deVine, G.; Klipstein, W. M.; McKenzie, K.; Shaddock, D.; Spero, R.; Thompson, R.; Wuchenich, D.; Yu, N.; Stephens, M.; Leitch, J.; Davis, M.; deCino, J.; Pace, C.; Pierce, R.
(Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2010., 2010-06-22)
The GRACE mission monitors changes in the Earth’s gravity field by measuring changes in the distance between spacecraft induced by that changing field. The distance variation is measured with a microwave ranging system ...