Beam Pointing Stabilization for a Shipboard Volume Imaging Lidar,

Abstract

A Scanning lidar has been modified to operate aboard the research vessel GLORITA in the MAST (Monterey Area Ship Track) experiment. Beam pointing stabilization was accomplished by using vertical gyros to measure the ships' attitude and a computer to control the scanning mechanism. The computer reads angles from the scanning mechanism, gyros and data acquisition computer which determines the desired pointing direction. Using orthogonal transformations, the required position of the scanning mechanism is calculated and appropriate commands are sent to it. During most of the MAST experiment the wave heights were in the 3 to 7 m range with rolls reaching 200 and pitches reaching 70 For these conditions, pointing accuracies of 0.10 were achieved. (MM)

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Document Details

Document Type
Technical Report
Publication Date
Jan 17, 1995
Accession Number
ADA290072

Entities

People

  • Jeffrey E. James
  • William P. Hooper

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms
  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Acquisition
  • Computers
  • Coordinate Systems
  • Data Acquisition
  • Elevation
  • Errors
  • High Acceleration
  • Laser Beams
  • Laser Radar
  • Lasers
  • Magnetic Fields
  • Military Research
  • Oceans
  • Scanning
  • Shipboard
  • Test Facilities

Fields of Study

  • Physics

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Inertial Navigation Systems.
  • Optical Physics and Photonics.