A GRAVITY-SEEKING POSITION INDICATOR

Victor W. Bolie

Peer Reviewed

Abstract: In both sea and air navigation, the time honored method of determining geographic position by measuring the angle between the gravity vector and the line-of-sight to a known celestial body promises to hold a permanent place of its own. In recent years, both optical and microwave devices have been developed for automatically tracking a given celestial body and recording its altitude and azimuth as a function of time. However, even though condensed navigation tables and portable celestialtriangle computers have been designed to convert altitude and azimuth information into latitude and longitude information, little has been done toward eliminating the need for converting from the one spherical coordinate system to the other. The purpose of this paper is to show some of the fundamental principles of a new and simplified indicator of geographic position which does not require the use of axisconversion computations. The device is intended for use with any celestial or inertial reference system, such as a three-axis gyro package, a dual telescope tracker of radiant energy from galactic sources, or any suitable telescope and gyro combination.
Published in: NAVIGATION, Journal of the Institute of Navigation, Volume 5, Number 8
Pages: 397 - 400
Cite this article: Bolie, Victor W., "A GRAVITY-SEEKING POSITION INDICATOR", NAVIGATION, Journal of The Institute of Navigation, Vol. 5, No. 8, 1957, pp. 397-400.
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