Improved Sonobuoy Compass.
LOCKHEED-CALIFORNIA CO BURBANK
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The purpose of this study was to determine the feasibility of development of an all-electronic compass. Two basically different types of magnetic field elements were examined and tested for applicability to this concept. Magnetodiodes appeared attractive, due to their small size, but test results showed that they were unsatisfactory in their present state of development. Permalloy thin film elements were tested and exhibited adequate sensitivity and so were used as the basis for determination of concept feasibility. Data obtained through laboratory and field tests demonstrated that thin film elements arranged orthogonally when rotated through 360 degrees showed good sensitivity with a maximum of directional error in the order of two degrees. A technique using four vertically and horizontally dispersed elements provided compensation up to plus or minus 25 degrees of tilt. Author
- Acoustic Detection and Detectors
- Direction Finding