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Proceedings Paper

Laser ceilometer with pseudo random code modulation for cloud high measurements
Author(s): Krzysztof Holejko; Roman Nowak
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Paper Abstract

This paper present a CW low power ceilometer designed for cloud base high measurements. The 500mW CW IR laser of the ceilometer is modulated by a pseudo noise sequence. The scattered and delayed light signal is received by a correlation system with output bandwidth of only 3,5 Hz. This enables to obtain the ranges of 1.2 km to the clouds and the accuracy of the order of +/- 2.5 m to the solid objects. The following issues are discussed: principle of operation, deice architecture and error estimation. Some measurement results are also enclosed.

Paper Details

Date Published: 24 August 2001
PDF: 8 pages
Proc. SPIE 4535, Optical Sensing for Public Safety, Health, and Security, (24 August 2001); doi: 10.1117/12.438429
Show Author Affiliations
Krzysztof Holejko, Warsaw Univ. of Technology (Poland)
Roman Nowak, Warsaw Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 4535:
Optical Sensing for Public Safety, Health, and Security

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