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Altimetry and lidar using AlGaAs lasers modulated with pseudo-random codesWe have demonstrated a prototype laser altimeter and lidar which uses a low power AlGaAs laser modulated with a pseudorandom noise (PN) code, a 20 cm diameter telescope, and a photon counting receiver. Measurements to tree canopies over a 400 m horizontal path show strong signals with 5.3 mW average power and a 6.4 msec averaging time. Computer simulations predict lidar performance for various types of scattering performance.
Document ID
19920021786
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Abshire, James B. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Rall, Jonathan A. R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Manizade, Serdar S. (Science Systems and Applications, Inc., Lanham MD., United States)
Date Acquired
September 6, 2013
Publication Date
July 1, 1992
Publication Information
Publication: NASA. Langley Research Center, 16th International Laser Radar Conference, Part 2
Subject Category
Instrumentation And Photography
Accession Number
92N31030
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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