Summary Technical Report of Division 6, NDRC. Volume 15. Underwater Sound Equipment 2. Echo-Ranging Systems
Abstract
The work undertaken to improve the operation of the type of echo-ranging system is explained. The sonar systems, in which observations are made of underwater sounds radiated by target vessels, are defined generically as direct listening systems; those systems, in which the target is caused to become a secondary radiator, or reflector of acoustical energy are known as echo-ranging systems. Because only the activities of Division 6 are described, the report must not be considered as a text book on the subject of echo-ranging systems, but rather as a reference work supplementing other publications. The report deals with circuits, training systems, Doppler applications, anchored vessel screens, small object detection, contour bottom scanners, and bearing deviation indicators for sonar and echo-ranging equipment.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1946
- Accession Number
- AD0221592
Entities
People
- John S. Coleman