Accession Number : ADA299587

Title :   Preparation of Dynamic Gravity Testing System.

Descriptive Note : Final rept.,

Corporate Author : WOODS HOLE OCEANOGRAPHIC INSTITUTION MA

Personal Author(s) : Bowin, Carl

PDF Url : ADA299587

Report Date : 1995

Pagination or Media Count : 2

Abstract : Bowin's interest at WHOI is to obtain the most accurate gravity and gravity gradient measurements possible. The Navy's interest is to have the most accurate navigation possible. Neither can have one without the other. Through Zarak Corporation, Bowin has proposed to the Navy Air System Command to develop a dynamic navigational gravity/gravity gradient (NAV/GRAV) system utilizing superconducting squid gravity and tensor gravity gradient sensors for high precision performance. The proposed system development incorporates that inter-dependency, not only to provide the best estimates of both, but also to provide estimates of the quality of the results obtained. Zarak is pursuing funds for the development of superconducting gravity and gravity gradient sensors. Such sensors, when available, will then be utilized in this palletized system for higher accuracy navigation, gravity and gravity gradient determination. It is desired that initial testing utilize Vibrating String Accelerometers (VSA) gravity sensors and readout systems available at WHOI. This way the development and testing of the NAV/GRAV system can proceed using the VSA sensors while the superconducting gravity sensors are being fabricated. Initial dynamic systems tests will be in a van vehicle for convenience and practicality. The system units will be palletized, and therefore they shall be easily transferable, and thus also be usable in aircraft and ships. It is planned that WHOI will have loan of prototype systems for about two months each year for earth research use.

Descriptors :   *GRAVIMETRY, *GRAVITY, *INERTIAL NAVIGATION, NAVAL AVIATION, AIRCRAFT, ACCELEROMETERS, SUPERCONDUCTORS, ACCURACY, DISPLAY SYSTEMS, COMMAND AND CONTROL SYSTEMS, TENSORS, GYRO COMPASSES, READ OUT TECHNIQUES, NAVIGATIONAL AIDS.

Subject Categories : Geodesy
      Air Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE