Title: SEND MEASUREMENTS, NOT COORDINATES
Author(s): James L. Farrell, Edwin D. McConkey, and C. Gary Stephens
Published in: NAVIGATION, Journal of the Institute of Navigation, Volume 46, Number 3
Pages: 203 - 216
Cite this article: Farrell, James L., McConkey, Edwin D., Stephens, C. Gary, "SEND MEASUREMENTS, NOT COORDINATES", NAVIGATION, Journal of The Institute of Navigation, Vol. 46, No. 3, Fall 1999, pp. 203-216.
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Abstract: In a large and growing number of systems, both military and commercial, position reporting plays a central role. The widespread practice of transmitting coordinates offers ease of understanding, and is appropriate for some surveillance and fleet monitoring operations. In many emerging applications, however, that practice is in fact a major impediment to performance. A long list of limitations would be largely in some instances, completely eliminated by adopting one fundamental design change. The seemingly unspectacular step of transmitting only measurements-independent of any reference frame-instead of coordinates or even coordinates-plus-velocity is a key to startling improvements in capability. The cumulative weight of the benefits, all of which are absent when preprocessing measurements into coordinates, merits serious consideration, especially for safety-critical applications.