A Device for Measuring the Velocity of a Body in an Undersea Environment.
Abstract
The patent application relates to a hollow, projectile-shaped body containing an acoustical transducer which is released into the sea such that the body descends in free fall until it strikes and penetrates the sea floor, coming to a rest therein. Acoustic signals emanating from the acoustic transducer are processed, using the doppler effect to generate a direct current analog signal which is the function of the velocity of the body from a time immediately preceding the body striking the sea floor surface until the body comes to rest in the sea floor, thereby obtaining an indication of the physical characteristics of the sea floor.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 18, 1976
- Accession Number
- ADD003279
Entities
People
- John R. Thompson
Organizations
- United States Department of the Navy