Splash Spotting by Passive Infrared Technique.
Abstract
A previous study by the Laboratory of Marine Physics had indicated that the splash, caused by a mine or mine-like object entering the water when dropped from an appreciable height, could be detected by passive infrared techniques. Utilizing a commercially available radiometer, with a scanning mirror to sweep a twenty-degree sector area, equipment was designed to detect a splash occurring anywhere within such area. This report discusses tests conducted, in which the feasibility of detecting such splashes under various visibility conditions was demonstrated. Detection was obtained to a range of about 3500 yards; at shorter ranges under visibility conditions ranging from "bright and clear" to "darkness of night"; and under sea conditions ranging from "smooth" to "fairly rough with white-caps".
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1959
- Accession Number
- AD0316387
Entities
People
- Charles S. H. Robinson
- E. L. Woodside
- J. Coolikoff
Organizations
- Yale University