Introduction. Standard GPS Review. Assistance - the "A" in A-GPS. Coarse Time Navigation - "Instant GPS". Coarse Time HDOP. High Sensitivity - "Indoor GPS". Generating Assistance Data. Long Term Orbits. Industry Standards and Government Mandates. Past and Future A-GNSS.
Frank van Diggelen is the technical director of GPS systems and the chief navigation officer at Broadcom Corporation. Dr. van Diggelen is also a technical advisor of assisted GPS for NavtechGPS. He holds a Ph.D. in electrical engineering from Cambridge University, England.