Accession Number:

AD0281809

Title:

A STUDY OF THE FACTORS AFFECTING THE SIGHTING OF SURFACE VESSELS FROM AIRCRAFT

Descriptive Note:

Corporate Author:

SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA VISIBILITY LAB

Personal Author(s):

Report Date:

1962-06-01

Pagination or Media Count:

196.0

Abstract:

A collection of 3,465 detailed reports of sightings of surface vessels from aircraft of the U. S. Coast Guard are analyzed by probit analysis to determine visual thresholds and measures of variance of the thresholds. Each of 17 conditions affecting the sighting range is studied separately to determine its effect. In each case, tables of probit results and graphs are included. A table of factors for each condition is included to allow forecasting of sighting thresholds and explanation of use for any probability level. A random selection of sightings is made in order to supply conditions for use of these factor tables as a demonstration of forecasting and as a test of the reliability of the data and of the forecasting method.

Subject Categories:

  • Optical Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE