Dr. Weiss worked at NIST (the National Institute of Standards and Technology – formerly NBS, the National Bureau of Standards) from 1979. Starting January 1, 2014, he retired as a NIST employee and became a consultant. Previously, in 1981, Dr. Weiss obtained his Ph.D. from the Joint Program in Mathematical Physics of the University of Colorado, Boulder, Colorado (CU, Boulder).
Dr. Weiss received the NBS Applied Research Award for a first GPS timing receiver in 1983. He led the NIST program to support the GPS program office in developing their clocks and timing systems from 1980 until his retirement in 2014. Dr. Weiss was awarded a patent for the Smart Clock algorithm in 1993. He won the 2013 NIST William P. Slichter Award, given for major contributions linking NIST with industry, “for pioneering highly productive industry/ government partnerships to advance telecommunications and data networks through precision synchronization.” In April 2019, Dr. Weiss was awarded the Marcel Ecabert Lifetime Achievement Award from the European Time and Frequency Forum and the Société Française des Microtechniques et de Chronométrie, “for his key contributions to remote clock comparisons, to time scale algorithm development and to accurate synchronization for science and industry.”
His research interests are in time transfer techniques, the use of GPS, GNSS and other Position, Navigation and Timing (PNT) systems, statistics of atomic clocks and time transfer systems, time-scale ensembles, and problems of Relativity as they relate to GPS and to primary frequency standards. In the last few years, Dr. Weiss has focused on developing resilience in PNT systems. In particular, he helped develop the DHS PNT Resilience Conformance Framework, released December 18, 2020.