Visibility Measurement for Aircraft Landing Operations

An experimental pulsed neodymium lidar system was modified and calibrated to obtain accurate data on atmospheric extinction properties in fog and low cloud conditions. The objective was to establish the theoretical and practical basis of a system for measuring slant visibility conditions for aircraf...

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Bibliographische Detailangaben
Hauptverfasser:	Collis,Ronald T. H, Viezee,William, Uthe,Edward E, Oblanas,John
Format:	Report
Sprache:	eng
Schlagworte:	AIRCRAFT LANDINGS AN/GMQ-10 ATMOSPHERES Atmospheric Physics ATTENUATION BACKSCATTERING CALIFORNIA CEILING DETECTION FOG LIDAR(LIGHT DETECTION AND RANGING) LIGHT DETECTION AND RANGING MONITORS NEODYMIUM OPTICAL PROPERTIES OPTICAL RADAR RADAR REFLECTORS SENSITIVITY TRANSMITTER RECEIVERS VISIBILITY
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Beschreibung
Zusammenfassung:	An experimental pulsed neodymium lidar system was modified and calibrated to obtain accurate data on atmospheric extinction properties in fog and low cloud conditions. The objective was to establish the theoretical and practical basis of a system for measuring slant visibility conditions for aircraft landing operations. To operate in conditions of fog and low cloud the lidar system's dynamic range was extended to 50 dB by using a two-stage receiver system. In addition, the transmitter and receiver beams were made coaxial to make close-range observations. (Author)