International Telemetering Conference Proceedings / October 22-25, 1984 / Riviera Hotel, Las Vegas, Nevada / The Global Positioning (GPS), which is being developed by the DoD to support the
operational forces, is a navigation aid that provides the user with precise position, velocity,
and time information anywhere within line-of-sight of four satellite transmitters. It also
holds potential benefits for use by the civilian community and the DoD test and training
ranges. The differential navigation technique consists of using measurements from
reference user equipment at a precisely known location to provide correction data to
improve the navigation solution of a user equipment at an unknown location. The
correction data consist of errors in position estimates derived from reference receiver
output using the known true location coordinates. These data are applied to the output of
the user equipment (at the unknown location) to remove common-mode errors due mainly
to ionospheric propagation delays and satellite clock and ephemeris errors. Data were
collected for user-to-reference separation distances of from zero to 280 nmi at night.
Accuracies achieved do not confirm predictions of a degradation in efficacy of differential
corrections with increasing separation distance; however, local disturbances at either GPS
receiver cause considerable dispersion in the data.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/610940 |
| Date | 10 1900 |
| Creators | Fickas, Ernest T., Wadsworth, Isobel M. |
| Contributors | SRI International |
| Publisher | International Foundation for Telemetering |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | text, Proceedings |
| Rights | Copyright © International Foundation for Telemetering |
| Relation | http://www.telemetry.org/ |
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