Accession Number : AD0285052

Title :   AN AID FOR PREDICTING RADAR REFRACTION IN THE POINT MUGU AREA

Corporate Author : NAVAL MISSILE CENTER POINT MUGU CALIF

Personal Author(s) : STANFIELD,J.W.

Report Date : 27 SEP 1962

Pagination or Media Count : 1

Abstract : A summary of propagation climatological data is compiled which is intended to aid Naval Weather Service personnel in forecasting and understanding the existing climatology of refractive-layer characteristics in the Point Mugu area. The Point Mugu area is defined as the immediate station and the area extending seaward to a radius of 75 miles. The following problems constitute the areas investigated and discussed: (1) What radar wavelengths are affected by ducting layers; (2) If ducting layers are not present, can increased radar ranges be expected for superrefractive conditions, or can decreased ranges be expected for subrefractive conditions at the transmitter site; (3) What transmitter-antenna elevation angles can be expected to be affected; (4) Where is the radar-lobe distortion (radar hole); (5) Is the ducting layer too high above the transmitter, thus causing the radar hole to be out of range; and (6) What is the horizontal extent of each type of layer. The study provides an operational foundation for the dissemination of existing measurements of atmospheric refractive index. A secondary function is to fill the need for a training aid as a ready source of information about complexities of radar propagation forecasting in the local area. (Author)

Descriptors :   *ATMOSPHERIC REFRACTION, *RADAR SIGNALS, *RADIO WAVES, AIR MASS ANALYSIS, ATMOSPHERES, CLIMATE, DISTORTION, MICROWAVES, PROPAGATION, RADIOFREQUENCY, RANGES (DISTANCE), REFRACTION, REFRACTIVE INDEX, WAVE PROPAGATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE