Carrier-to-noise ratio for an equal-gain coherent laser radar receiver array system: theory and experiment

1998 ◽  
Author(s):  
Larry C. Andrews ◽  
Deborah E. Kelly ◽  
Ronald L. Phillips ◽  
Arthur R. Weeks ◽  
James E. Harvey ◽  
...  
Keyword(s):  
System Theory ◽  
Laser Radar ◽  
Receiver Array ◽  
Noise Ratio ◽  
Coherent Laser Radar ◽  
Theory And Experiment

Bistatic coherent laser radar signal-to-noise ratio

2002 ◽  
Vol 41 (9) ◽  
pp. 1768 ◽  
Author(s):  
Eric P. Magee ◽  
Timothy J. Kane
Keyword(s):  
Signal To Noise Ratio ◽  
Laser Radar ◽  
Radar Signal ◽  
Signal To Noise ◽  
Noise Ratio ◽  
Coherent Laser Radar

Unbalance Response of a Dual Rotor System: Theory and Experiment

1993 ◽  
Vol 115 (4) ◽  
pp. 427-435 ◽  
Author(s):  
K. Gupta ◽  
K. D. Gupta ◽  
K. Athre
Keyword(s):  
System Theory ◽  
Transfer Matrix ◽  
Mode Shape ◽  
Reasonable Agreement ◽  
Complex Variables ◽  
Rotor System ◽  
Experimental Results ◽  
Unbalance Response ◽  
Theoretical Results ◽  
Theory And Experiment

A dual rotor rig is developed and is briefly discussed. The rig is capable of simulating dynamically the two spool aeroengine, though it does not physically resemble the actual aeroengine configuration. Critical speeds, mode shape, and unbalance response are determined experimentally. An extended transfer matrix procedure in complex variables is developed for obtaining unbalance response of dual rotor system. Experimental results obtained are compared with theoretical results and are found to be in reasonable agreement.

Dimensional Measurement of a Composite Ship Hull Using Coherent Laser Radar Yielding Submillimeter Results

2004 ◽  
Vol 20 (04) ◽  
pp. 232-239
Author(s):  
Steven D. Hand ◽  
David B. Ober ◽  
Bryan A. Bond ◽  
Edward A. Devine
Keyword(s):  
Computer Aided Design ◽  
Focal Length ◽  
Ship Hull ◽  
Laser Radar ◽  
Dimensional Measurement ◽  
Reinforced Plastic ◽  
Fiberglass Composite ◽  
Coherent Laser Radar ◽  
Composite Ship ◽  
Aided Design

The use and result of coherent laser radar as a noncontact method for the dimensional measurement of a ship hull is described. The hull, keel, and deck of a halfscale notional glass-reinforced plastic (fiberglass) composite hull test specimen are measured to submillimeter accuracy and then compared to the computer-aided design (CAD) model for conformance validation. Positives and negatives of this technology are the subject of this paper and include the high accuracy potential of the coherent laser radar, the minimal manpower requirements needed to achieve accurate results, and the limitation of the equipment's digital focal length and its effects on setup and data acquisition.

Improvement of signal-to-noise ratio in chaotic laser radar based on algorithm implementation

2012 ◽  
Vol 10 (5) ◽  
pp. 052801-52804 ◽  
Author(s):  
Bingjie Wang Bingjie Wang ◽  
Tong Zhao Tong Zhao ◽  
Huakui Wang Huakui Wang
Keyword(s):  
Signal To Noise Ratio ◽  
Laser Radar ◽  
Signal To Noise ◽  
Chaotic Laser ◽  
Noise Ratio ◽  
Algorithm Implementation

Spectral analysis, digital integration, and measurement of low backscatter in coherent laser radar

1989 ◽  
Vol 28 (15) ◽  
pp. 3008 ◽  
Author(s):  
J. M. Vaughan ◽  
R. D. Callan ◽  
D. A. Bowdle ◽  
J. Rothermel
Keyword(s):  
Spectral Analysis ◽  
Laser Radar ◽  
Digital Integration ◽  
Coherent Laser Radar
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