When asked to do a small survey job overseas, we were concerned about shipping bulky and expensive survey equipment. Shipping costs are not trivial. Add to that the real possibility that your survey equipment may be confiscated by the local authorities, as ours was in Djibouti, and the cost of shipping equipment becomes a substantial part of the overall job. There should be alternatives, especially if accuracy requirements are not stringent. read more
Guest column by Don Jewell, Defense Editor In the 2016 President’s Budget, submitted in February, the U.S. Air Force requested a budget of $122.2 billion. That exceeds the Office of Management and Budget’s recommendation by almost $10 billion. I applaud the Air Force action and think it may be too little, too late. On the satellite or hardware side of... read more
The Business section from the March 2015 issue. Download the PDF. Includes: Harris to Acquire Exelis GATE Facility Recertified Spectracom Offers RTK System Testing PlanetiQ Plans GNSS Weather Constellation Briefs read more
The United States Civil GPS Service Interface Committee (CGSIC) has issued a notice about a problem some receivers are having implementing the correct time. The U.S. Coast Guard Navigation Center has received reports of synchronization issues since the implementation of a leap second on Jan. 21. Users experiencing this problem should contact the receiver manufacturer for a firmware or software... read more
Spectracom GSG-Series GNSS Simulators have added capability to provide multiple RF outputs for advanced testing where multiple receivers or antennas are in use in a single system. Typical examples include controlled radiation pattern antennas (CRPA) or heading/attitude receivers and systems. The intuitive StudioView software allows easy reconfiguration of test cases to change the conditions seen by one or all receivers... read more
TeleOrbit’s software-based GNSS multi-system performance simulation environment, GIPSIE, consists of a satellite constellation simulator and an intermediate frequency simulator. The digital signal simulator GIPSIE streams the software-generated signals or recorded live data exactly into the receiver’s baseband processing chain to support development, test, verification, validation, qualification and certification. Features include simulation of multi-system, multi-frequency scenarios GPS L1/L2/L5 and Galileo E1/E5/E6;... read more
A leap second will be introduced this year at 23:59 on June 30. This phenomenon comes around periodically and is necessary for keeping UTC in line with the Earth’s slowing rotation. Although it will pass unnoticed by most, it has implications for anyone involved in the development of GNSS-enabled devices. For some, it can be the cause of a major headache. read more
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