UrsaNav Follows Up with Second Wide-Area Timing Tests

March 23, 2012- UrsaNav again transmitted from the former USCG Loran Support Unit (LSU) facility in Wildwood, NJ. The LSU has been re-named to the Diamond Beach Facility, or “dBF”.

The main purpose for on-air testing at this time is to demonstrate wide-area precise time distribution using terrestrial, ground-wave RF solutions. However, a robust timing solution uses on-signal data channel(s) for nanosecond-level corrections, so we are also testing a variety of modulation techniques that provide significant throughput gains over the current 100-180 BPS methods.

The current equipment suites consist of the Nautel NL Series prototype transmitters, Symmetricom Timing and Frequency Equipment (TFE), and UrsaNav UN-150 eLoran Timing Receivers.

UrsaNav is not simply transmitting eLoran. It is also evaluating some improvements to eLoran that do not change the underlying signal structure. Finally, we are testing various alternative LF solutions that include new waveforms and modulation techniques.

The preliminary monitor sites have been established at five locations: Boston, MA; Chambersburg, PA; Leesburg, VA; Chesapeake, VA; and Charleston, SC. We are scouting for additional monitor sites at distances of up to 1,500 miles from our current transmitting location.

www.ursanav.com/ursanav-news/ursanav-follows-second-wide-area-timing-tests