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Proceedings Paper

Intervisibility: to be seen or not to be seen
Author(s): Xin Zhang; Yaakov Bar-Shalom; Peter K. Willett; Ilana Segall
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Paper Abstract

Here we discuss intervisibility - the existence of an unobstructed line of sight (LOS) between two points - accounting for the vertical and horizontal errors in the estimated locations of both points as well as elevation errors in the database of terrain that could obstruct the LOS between these points. The errors are first simply treated as a "white" noise sequence: we assume no correlation between the intervisibility at two different times, and only the probability of the intervisibility event is in this case developed. This is useful; but perhaps of greater concern is whether or not a target remains visible long enough and/or often enough that something can be done about it. Consequently we present a second treatment in which the errors are stochastic processes of given and width, and both the probability density function of the intervisible time and the average number of intervisible intervals over a certain time period interval are developed.

Paper Details

Date Published: 5 January 2004
PDF: 12 pages
Proc. SPIE 5204, Signal and Data Processing of Small Targets 2003, (5 January 2004); doi: 10.1117/12.504825
Show Author Affiliations
Xin Zhang, Univ. of Connecticut (United States)
Yaakov Bar-Shalom, Univ. of Connecticut (United States)
Peter K. Willett, Univ. of Connecticut (United States)
Ilana Segall, Elbit Systems Ltd. (Israel)


Published in SPIE Proceedings Vol. 5204:
Signal and Data Processing of Small Targets 2003
Oliver E. Drummond, Editor(s)

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