No audio available for this content. On the day of the solstice, June 21, geospatial professionals around the world and members of Land Surveyors United (a global support network for land surveyors) ...

No audio available for this content. Last week, the U.S. Air Force announced it is reconfiguring the GPS constellation. The Air Force is changing the constellation from a 21+3 configuration to a 24+3 ...

Improved integrity, availability, and resistance to RF interference are as important to many land transportation GPS users as defeating the accuracy degradation caused by SA. GPS-based automobile ...