M. T. Decker
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View article: The 700–500 mb Lapse Rate as an Index of Microburst Probability: An Application for Thermodynamic Profilers
The 700–500 mb Lapse Rate as an Index of Microburst Probability: An Application for Thermodynamic Profilers Open
This study validates the predicted association between frequency of dry microburst occurrence and large temperature lapse rate. In applying lapse rate trend data and high time resolution data from remote sensors, we first compared lapse ra…
View article: GAPEX: A Ground-Based Atmospheric Profiling Experiment
GAPEX: A Ground-Based Atmospheric Profiling Experiment Open
During the week 29 October–4 November 1988, a Ground-based Atmospheric Profiling Experiment (GAPEX) was conducted at Denver Stapleton International Airport. The objective of GAPEX was to acquire and analyze atomspheric-temperature and mois…
View article: Design Considerations for a Network of Thermodynamic Profilers
Design Considerations for a Network of Thermodynamic Profilers Open
A modular design for a ground-based thermodynamic profiler is presented, based on experience with a six-channel microwave radiometer that has provided temperature, pressure, and moisture measurements continuously, unattended, since 1981. E…
View article: An Automatic Profiler of the Temperature, Wind and Humidity in the Troposphere
An Automatic Profiler of the Temperature, Wind and Humidity in the Troposphere Open
A remote-sensing system for continuously profiling the troposphere is discussed; the prototype Profiler utilizes radio wavelengths, thereby achieving essentially all-weather operation. Designed for unattended operation, the Profiler employ…
View article: Estimating the Depth of the Daytime Convective Boundary Layer
Estimating the Depth of the Daytime Convective Boundary Layer Open
Three in-situ and five remote sensing techniques for measuring the height of the daytime convective boundary layer were compared. There was, as a rule, good agreement between the different systems when the capping inversion was steep and w…
View article: Experimental Evaluation of Ground-Based Microwave Radiometric Sensing of Atmospheric Temperature and Water Vapor Profiles
Experimental Evaluation of Ground-Based Microwave Radiometric Sensing of Atmospheric Temperature and Water Vapor Profiles Open
Profiles of atmospheric temperature and water vapor derived from ground-based microwave radiometric measurements are compared with concurrent rawinsonde profiles including both clear and cloudy cases. Accuracies of the temperature profiles…
View article: Ground-based microwave probing
Ground-based microwave probing Open
Theoretical and experimental activities in remote sensing were conducted. The projects are: (1) the linear statistical inversion method, (2) vertical temperature profile determination from microwave emission measurements near 60 GHz, (3) r…
View article: Insertion loss of a brick wall at UHF
Insertion loss of a brick wall at UHF Open
Measurements of the effects of inserting a brick wall into a radio propagation path are reported.The technique used for measuring "insertion loss" at frequencies of 518 Me/s and 1046 Me/s is described.Distributions of the resulting data in…
View article: Mutual interference between surface and satellite communication systems
Mutual interference between surface and satellite communication systems Open
Estimates of t he mutual interfer ence expected to occur bet ween t he ground te rminals o f s pace co mmunica t ion s systems a nd s urface point-to-point systems are prese nted in a fas hion su itab le for engin ee ring app li cations.Th…
View article: An analysis of propagation measurements made at 418 megacycles per second well beyond the radio horizon (a digest).
An analysis of propagation measurements made at 418 megacycles per second well beyond the radio horizon (a digest). Open
During an I S-mon th period in 1952 and 1953, t ransmission loss measuremen ts at 41S megacycles were m ad e over a 134-mile p ath betwee n Cedar R apids, I owa, a nd Qilin cy, Illi nois.Continu ous r ecordings m ad e simultaneously at sev…
View article: Transmission and reflection by a parallel wire grid
Transmission and reflection by a parallel wire grid Open
A comparison is ma de at X-band fr equcncies of thc theoretical and measured transmission and reflection coefficients for a parallel wire grid.The methods u sed are appli cable to the m easurements of these factors for various building mat…
View article: Service area of an airborne television station.
Service area of an airborne television station. Open
modified to be a function of frequency.The curves are presented for three transmitting and three receiv- ing antenna heights and for two frequencies in the UHF television band.'
View article: Propagation aspects of TACAN system coverage :
Propagation aspects of TACAN system coverage : Open
The propagation factors which affect the coverage volume of a TACAN type facility operating in the 1000 Me region are discussed in this paper.Using theoretical and empirical methods, prediction curves are derived which indicate the probabi…