A laser radar system for monitoring multiple atmospheric parameters and its application to remote measurement of water density and size distributions

1977 ◽  
Vol 13 (9) ◽  
pp. 882-883 ◽  
Author(s):  
H. Shimizu ◽  
T. Kobayasi ◽  
H. Inaba
Keyword(s):  
Radar System ◽  
Laser Radar ◽  
Remote Measurement ◽  
Size Distributions ◽  
Water Density ◽  
Atmospheric Parameters

A compact 3D imaging laser radar system using Geiger-mode APD arrays: system and measurements

2003 ◽  
Author(s):  
Richard M. Marino ◽  
Timothy Stephens ◽  
Robert E. Hatch ◽  
Joseph L. McLaughlin ◽  
James G. Mooney ◽  
...  
Keyword(s):  
3D Imaging ◽  
Radar System ◽  
Laser Radar ◽  
Geiger Mode

Laser radar system for obstacle avoidance

2005 ◽  
Author(s):  
Karlheinz Bers ◽  
Karl R. Schulz ◽  
Walter Armbruster
Keyword(s):  
Obstacle Avoidance ◽  
Radar System ◽  
Laser Radar

Flight test of 2-μm diode-pumped laser radar system

1995 ◽  
Author(s):  
Thomas J. Kane ◽  
Jeffrey D. Kmetec ◽  
Thomas J. Wagener
Keyword(s):  
Flight Test ◽  
Radar System ◽  
Laser Radar ◽  
Diode Pumped

scholarly journals Detection of a Semi-Rough Target in Turbulent Atmosphere by an Electromagnetic Gaussian Schell-Model Beam

2019 ◽  
Vol 9 (14) ◽  
pp. 2790
Author(s):  
Xiaofei Li ◽  
Yuefeng Zhao ◽  
Xianlong Liu ◽  
Yangjian Cai
Keyword(s):  
Inverse Problem ◽  
Atmospheric Turbulence ◽  
Turbulent Atmosphere ◽  
Incident Beam ◽  
Radar System ◽  
Equivalent Model ◽  
Laser Radar ◽  
Beam Radius ◽  
Tensor Method ◽  
Set Up

The interaction of an electromagnetic Gaussian Schell-model beam with a semi-rough target located in atmospheric turbulence was studied by means of a tensor method, and the corresponding inverse problem was analyzed. The equivalent model was set up on the basis of a bistatic laser radar system and a rough target located in a turbulent atmosphere. Through mathematical deduction, we obtained detailed information about the parameters of the semi-rough target by measuring the beam radius, coherence radius of the incident beam and the polarization properties of the returned beam.

Required energy for a laser radar system incorporating a fiber amplifier or an avalanche photodiode

1995 ◽  
Vol 34 (33) ◽  
pp. 7724 ◽  
Author(s):  
Jay A. Overbeck ◽  
Michael S. Salisbury ◽  
Martin B. Mark ◽  
Edward A. Watson
Keyword(s):  
Fiber Amplifier ◽  
Avalanche Photodiode ◽  
Radar System ◽  
Laser Radar

scholarly journals A Doppler radar for continuous remote measurement of river ice velocity

1996 ◽  
Vol 23 (2) ◽  
pp. 408-417
Author(s):  
M. G. Ferrick ◽  
N. E. Yankielun ◽  
D. F. Nelson
Keyword(s):  
Velocity Measurement ◽  
Measurement Errors ◽  
Doppler Radar ◽  
Full Range ◽  
Radar System ◽  
River Ice ◽  
Remote Measurement ◽  
Connecticut River ◽  
Ice Dynamics ◽  
Ice Velocity

River ice velocity measurements are fundamental to analyses of river ice dynamics. Ice velocity measurement with a continuous-wave Doppler radar system having real-time data acquisition and digital signal processing capability was evaluated during a river breakup and a frazil run on the Connecticut River. This system can be rapidly deployed, requires minimal operator interaction, will continuously acquire, process, store, and display ice velocity data, and does not depend on visibility conditions. In parallel, video records of ice motion were obtained at the same location for later manual processing and comparison with the radar results. We describe the Doppler radar system and obtain bounding estimates of possible measurement errors. The principal error in Doppler ice velocity measurement is due to the beam width of the radar antenna, and an analytical method is developed to minimize this error. Measured ice velocities ranged from 1 to 2.5 m/s during the river breakup, and from 0.5 to 0.65 m/s in the frazil run. Quantitative comparisons between the radar and video results show fundamental agreement between these measurement methods, and demonstrate that Doppler radar is an effective, efficient, and precise tool for obtaining river ice velocities over the full range of possible ice and velocity conditions. Key words: Doppler radar, river ice velocity, velocity measurement, error analysis, river breakup, frazil run.

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