timing
Wednesday, April 16th, 2014
Abstracts are now being accepted for the Institute of Navigation’s (ION) Precise Time and Time Interval (PTTI) Meeting. The meeting will take place December 1-4, 2014 (Tutorials December 1) at the Seaport Boston Hotel, Boston, Massachusetts. The...
Friday, June 7th, 2013
Spirent Communications, the leader in testing navigation and positioning systems, today announced the launch of the Spirent GSS6425 multi-frequency GNSS record and playback (RPS) test system. It provides customers with RF recordings for more constellations (GPS, GLONASS,...
Sunday, April 14th, 2013
The U.S. Military relies on the space-based Global Positioning System (GPS) to aid air, land and sea navigation. Like the GPS units in many automobiles today, a simple receiver and some processing power is all that is...
Tuesday, April 12th, 2011
One of the more surprising consequences from the March 2011 earthquake in Japan was that the forces unleashed shifted the earth's mass sufficiently to accelerate its rotation, shortening each day by no less than 1.8 microseconds, according...
Tuesday, February 15th, 2011
The seventh Global Positioning System Block IIR (GPS IIR-7/SVN-54) satellite, designed and built by Lockheed Martin, has reached 10 years of successful on-orbit operations, and continues to deliver critical position, navigation and timing (PNT) signals to nearly...
Friday, February 4th, 2011
Passive Hydrogen Maser (PHM) and Rubidium Atomic Frequency Standard (RAFS) are the two baseline on-board clock technologies for Galileo, the European Global Navigation Satellite System (GNSS), which are currently being validated on-board two experimental spacecrafts, GIOVE-A and...
