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Proceedings Paper

Passive range and azimuth measuring system
Author(s): E. Ronning; Earl J. Fjarlie
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Paper Abstract

The classical rangefinder that uses two telescopes separated by a fixed base distance so as to produce a parallax-angle difference when pointed at a source of interest to determine the range, has been used as the basis of a passive electro-optic range and azimuth finder. The concept, shown in Figure 1, uses: two silicon photodiode focal plane arrays (FPA) each incorporating 256X256 elements (each element being 40 by 40 tm) , two standard telephoto lenses, two video data formatters (VDF) , two TV monitors for convenience in operating the system (not shown) , two high-speed waveform digitisers, each with a 128 K memory data storage facility, and a host computer driven by algorithms for determining the range and azimuth. The determination takes about six minutes.

Paper Details

Date Published: 1 March 1991
PDF: 6 pages
Proc. SPIE 1399, Optical Systems in Adverse Environments, (1 March 1991); doi: 10.1117/12.26096
Show Author Affiliations
E. Ronning, Royal Military College of Canada (Canada)
Earl J. Fjarlie, Royal Military College of Canada (Canada)

Published in SPIE Proceedings Vol. 1399:
Optical Systems in Adverse Environments
Soon Fatt Yoon; M. H. Kuok; Donald E. Silva, Editor(s)

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