Today, increasing demands and expectations are being placed on GPS systems. Assisted GPS (A-GPS) has been developed to provide greatly improved capabilities, helping GPS work better and faster in almost any location. Offering a detailed look at all the technical aspects and underpinnings of A-GPS, this unique book places emphasis on practical implementation. The book reviews standard GPS design, helping you understand why GPS requires assistance in the first place. You discover how A-GPS enables the computing of a position from navigation satellites in the absence of precise time - a topic not covered in any other book. Moreover, you learn how to design and analyze a high sensitivity GPS receiver and determine the achievable sensitivity of a GPS receiver. The book provides detailed worksheets that show how to compute, analyze, and improve the processing gain from the signal strength at the antenna to the carrier-to-noise ratio (C/N0) at the front end, to the signal-to-noise ratio (SNR) after the correlators. This cutting-edge volume discusses special forms of assistance data, industry standards for A-GPS, and government mandates for location of mobile phones. You also find coverage of future global navigation satellite systems and how they can be designed specifically for instant-fixes and high sensitivity. The book features numerous tables, worksheets, and graphs that illustrate key topics and provide the equivalent of a technical handbook for engineers who design or use A-GPS.
|Publisher:||Artech House, Incorporated|
|Product dimensions:||7.20(w) x 10.10(h) x 1.00(d)|
About the Author
Frank van Diggelen is the technical director, 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.
Table of Contents
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.