TY - GEN AU - David W Allan C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1976-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.75-827 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1976 TI - Report on NBS Dual Mixer Time Difference system (DMTD) built for time-domain measurements associated with phase 1 of GPS: ER -