Accession Number : ADD014913

Title :   Method of Simultaneously Measuring Orthometric and Geometric Heights.

Descriptive Note : Patent Application, Filed 26 Feb 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Evans, Alan G

Report Date : 26 Feb 1991

Pagination or Media Count : 13

Abstract : This invention relates generally to the measurement of geodetic quantities and more particularly to a method of simultaneously measuring orthometric and geometric heights. Knowledge of the vertical deflection of the gravity vector has great utility in various inertial navigation and/or geodetic applications. Conventional procedures to determine the two dimensional deflection of the gravity vector require the use of a theodolite for stellar observations and clear night time weather conditions. Therefore, this procedure is sensitive to environmental conditions.

Descriptors :   DEFLECTION, GEODESY, GRAVITY, INERTIAL NAVIGATION, MEASUREMENT, NIGHT, QUANTITY, SENSITIVITY, STARS, THEODOLITES, TWO DIMENSIONAL, VERTICAL ORIENTATION, WEATHER

Subject Categories : Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE