Accession Number:

AD0672355

Title:

AN EXAMPLE OF AN EARLY TECHNIQUE FOR VISIBILITY CALCULATIONS,

Descriptive Note:

Corporate Author:

SCRIPPS INSTITUTION OF OCEANOGRAPHY SAN DIEGO CALIF VISIBILITY LAB

Personal Author(s):

• Gordon,Jacqueline I.
• Church,Peggy V.

Report Date:

1968-06-01

Pagination or Media Count:

43.0

Abstract:

This report describes results from previously unreported visibility calculations made in the spring of 1957, of aerial observer sighting and recognition ranges for a complex object. The object is a toy model scaled to vehicle size, lighted by sun and sky, and screened by the real atmosphere. Most of the ranges are presented graphically as a function of altitude for one search method viz, visual fixation at the optimal angle of sight, area coverage being provided by the forward movement of the plane. Sample results are also given for other methods of search. Author

Descriptors:

• *AERIAL RECONNAISSANCE
• *TARGET RECOGNITION
• SURFACE TARGETS
• PERFORMANCE(HUMAN)
• MODEL TESTS
• MATHEMATICAL ANALYSIS
• VISIBILITY
• MATHEMATICAL MODELS
• SCALE
• ROADS
• AZIMUTH
• SUN
• SKY BRIGHTNESS
• VISUAL ACUITY
• BACKGROUND
• VELOCITY
• SIMULATION
• ALTITUDE
• ANGLE OF ARRIVAL

Subject Categories:

• Anatomy and Physiology
• Military Operations, Strategy and Tactics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE