Critical Issues in Global Navigation Satellite Systems

Critical Issues in Global Navigation Satellite Systems

Ina Freeman (University of Birmingham, UK) and Jonathan M. Auld (NovAtel Inc., Canada)
Copyright: © 2005 |Pages: 7
DOI: 10.4018/978-1-59140-561-0.ch023
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Abstract

Global Navigation Satellite Systems (GNSS) is a concept that relays accurate information of a position or location anywhere on the globe using a minimum of four satellites, a control station, and a user receiver. GNSS owes its origins to Rabi’s work in the early 1940s with the concept of an atomic clock (Nobel Museum, http://www.nobel.se/physics/laureates/1944/rabi-bio.html). In October 1940, the National Defense Research Council in the U.S. recommended implementing a new navigation system that combined radio signals with this new technology of time interval measurements. From this, MIT developed Long Range Radio Aid to Navigation (LORAN), which was refined by scientists at John Hopkins University and utilized during World War II through the late 1950s.

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