Download or read book Operational Performance of Sensor Systems Used to Determine Atmospheric Boundary Layer Properties as Part of the NASA Aircraft Vortex Spacing System P written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-16 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: There has been a renewed interest in the application of remote sensor technology to operational aviation and airport-related activities such as Aircraft Vortex Spacing System (AVOSS). Radio Acoustic Sounding Systems (RASS), Doppler-acoustic sodars, Ultrahigh Frequencies (UHF) profilers and lidars have many advantages in measuring wind and temperature profiles in the lower atmospheric boundary layer since they can operate more or less continuously and unattended; however, there are limitations in their operational use at airports. For example, profilers deteriorate (limited altitude coverage or missing) in moderate or greater rain and can be affected by airplane targets in their field of view. Sodars can handle precipitation better but are affected by the high noise environments of airports and strong winds. Morning temperature inversions typically limit performance of RASS, sodars and profilers. Fog affects sonic anemometers. Lidars can have difficulties in clouds, fog or heavy precipitation. Despite their limitations these sensors have proven useful to provide wind and temperature profiles for AVOSS. Capabilities and limitations of these and other sensors used in the AVOSS program are discussed, parameter settings for the sensor systems are documented, and recommendations are made for the most cost-effective group of sensors for the future. The potential use of specially tuned dynamic forecast models and measurements from landing and departing aircraft are addressed.Zak, J. Allen and Rodgers, William G., Jr. and Nolf, Scott and McKissick, Burnell T. (Technical Monitor)Langley Research CenterREMOTE SENSORS; ATMOSPHERIC BOUNDARY LAYER; TEMPERATURE MEASUREMENT; ATMOSPHERIC TEMPERATURE; ATMOSPHERIC SOUNDING; WIND MEASUREMENT; WEATHER FORECASTING; TEMPERATURE PROFILES; SPACING; ULTRAHIGH FREQUENCIES; TEMPERATURE INVERSIONS; OPTICAL RADAR; DYNAMIC MODELS; COST EFFECTIVENESS; ACOUSTIC FREQUENCIES; SONIC ANEMOMETERS; SODAR