A triangulation method for passive ranging
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Authors
Pelegris, Gerasimos
Subjects
NA
Advisors
Pieper, Ron J.
Cooper, Alfred W.
Date of Issue
1994-06
Date
June 1994
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
ABSTRACT A method for passive ranging based on the principle of triangulation is considered In the basic triangulation scheme that is a single baseline model the precision in the bearing readings can be related to the precision in the range estimation. For some target orienta- tions the precision in the triangulated target range is completely lost This phenomenon i'i known as "geometric dilution." A proposed orthogonal dual baseline scheme eliminates the "geometric dilution" effect The performance of each of the two orthogonal baselines depends on target orientation. For specific target orientations the triangulation range mea- surements for the two baselines are equivalent The dual baseline scheme would require "smart electronics" which would switch between baselines at crossover points in the range estimation precision. It is shown that the crossover points depend primarily on the ratio of the two baselines. A general expression for the maximum triangulation range consistent with limitations in minimum tolerance precision in range estimation is derived. The depen- dency between maximum range and target orientation are presented in polar form. Limitations in the dual baseline model due to physical limitation created by the optical horizon are also considered.
Type
Thesis
Description
Series/Report No
Department
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
111 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.