NRL has recently established an Omega monitor at the RAE facilities at Lasham, England, to obtain diurnal phase shift and phase stability data on Omega signals from transmitters located in Forestport, New York; Haiku, Hawaii; and Summit, Canal Zone. The monitor utilizes a type AN/WRN-2(XN-1) Omega Navigation Receiver and associated support equipment and is operated by the Royal Aircraft Establishment, Ministry of Aviation, Great Britain. The data obtained from this monitor will be used in the evaluation of the Omega Navigation System. Preliminary data from the monitor show that signal strengths from the transmitters are sufficient for proper operation of the monitor at Lasham. (Author).

Eine konsistente Behandlung der Technologie moderner Navigationssysteme - für den Entwicklungsingenieur ebenso wie für den Betreiber existierender Anlagen. Der Autor, ein erfahrener Praktiker, geht in dieser zweiten, aktualisierten Auflage auch auf neueste Entwicklungen in Theorie, Hard- und Software ein, wie sie beispielsweise in Satellitensystemen, elektronischen Fahrzeugsteuerungen und Landesystemen Anwendung finden.

The OMEGA Navigation System provides a worldwide enroute positioning capability from eight transmitting stations. Although the operational transmitting stations now provide useful navigation signals, the system will not be declared fully operational until the validation program is completed in 1985. The validation program is being accomplished on a regional basis through a measurement process conducted by the U.S. Coast Guard. The North Atlantic is the second region to be validated. The data base for the North Atlantic Validation consisted of LOP Phase measurements from 36 stations of the OMEGA Navigation System Operations Detail (ONSOD) worldwide monitor network and signal amplitude measurements, both ground and airborne, throughout the area collected by the Naval Ocean Systems Center (NOSC). These data were supplemented with integrated OMEGA/Satellite shipboard measurements and numerous OMEGA measurements and observations from ship and aircraft users, both civilian and military, from several countries.