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Wide field of view laser beacon system for three-dimensional aircraft position measurementThis paper presents a new wide field of view laser beacon system for measurement, in three dimensions, of aircraft or other remote objects. The system is developed for aircraft collision hazard warning independent of ground-based hardware, as well as for flight research, helicopter-assisted construction and rescue, and robotic manipulation applications. Accurate information describing the relative range, elevation, and azimuth of the aircraft are generated by the sweep of a low-power fan-shaped rotating laser beacon past an array of optical detectors. The system achieves a wide angle of acceptance of laser beacon light through use of compound parabolic concentrators, which collimate the light for spectral filtering to minimize solar interference. An on-board microprocessor system converts the pulse sequence to aircraft position in real time. System reliability and performance are enhanced through narrow pass filtering of the pulse signals, digital logic design to mask spurious signals, and adaptive modulation of trigger threshold levels.
Document ID
19820041028
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Sweet, L. M.
(Princeton Univ. NJ, United States)
Miles, R. B.
(Princeton Univ. NJ, United States)
Webb, S. G.
(Princeton Univ. NJ, United States)
Wong, E. Y.
(Princeton University Princeton, NJ, United States)
Date Acquired
August 10, 2013
Publication Date
November 1, 1981
Subject Category
Aircraft Communications And Navigation
Report/Patent Number
ASME PAPER 81-WA/DSC-9
Meeting Information
Meeting: Winter Annual Meeting
Location: Washington, DC
Start Date: November 15, 1981
End Date: November 20, 1981
Sponsors: American Society of Mechanical Engineers
Accession Number
82A24563
Funding Number(s)
CONTRACT_GRANT: NCC2-94
Distribution Limits
Public
Copyright
Other

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