Communications: directive radio wave systems and devices (e.g. – Combined with diverse type radiant energy system – With laser
Patent
1992-08-13
1993-08-31
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Combined with diverse type radiant energy system
With laser
342 26, 356 5, 356 285, 356342, G01C 308, G01S 1395
Patent
active
052413152
ABSTRACT:
An eye safe, compact, solid state lidar for profiling atmospheric cloud and aerosol scattering is disclosed. The transmitter of the micro pulse lidar is a diode pumped .mu.J pulse energy, high repetition rate Nd:YLF laser. Eye safety is obtained through beam expansion. The receiver employs a photon counting solid state Geiger mode avalanche photodiode detector. Data acquisition is by a single card multichannel scaler. Daytime background induced quantum noise is controlled by a narrow receiver field-of-view and a narrow bandwidth temperature controlled interference filter. Dynamic range of the signal is limited by optical geometric signal compression. Signal simulations and initial atmospheric measurements indicate that micro pulse lidar systems are capable of detecting and profiling all significant cloud and aerosol scattering through the troposphere and into the stratosphere. The intended applications are scientific studies and environmental monitoring which require full time, unattended measurements of the cloud and aerosol height structure.
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Clohan, Jr. Paul S.
Marchant R. Dennis
Miller Guy M.
Sotomayor John B.
The United States of America as represented by the Administrator
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