Timing Calibration of the Northeast U.S.A. LORAN-C Chain(9960)
Richard E. Keating, Carl F. Lukac, G. H. Luther, Laura G Charron · 1986
Introduction, The U.S. Naval Observatory (USNO), f rom the very f i rs t day o f i t s establishment i n 1830 as a chronometer rat ing office, to the present, has been deeply involved in the specialized field o f Precise Time and Time Interval (PTTI). During this period o f one and one ha l f centuries, the accuracy specification tha t defines Precise Time and Time