He is a winner of the American Astrophysical Society's Brunno Rossi Prize (1987) for "The Detection of Neutrinos from Supernova 1987A", and the European Geosciences Union Vening Meinesz Medal (2015) "for his pioneering developments in geodetic theory, for advancing GPS for scientific research and applications, and for his outstanding contributions in applying geodesy to study geophysical and climate processes. He is co-inventor on Caltech patents related to hi-tech GPS analysis systems. He was awarded Fellow of the American Geophysical Union (2005), Fellow of the International Association of Geodesy (1999), and is a member of the American Physical Society.