Geodetic Application of Satellite Data

The Aeronautical Chart and Information Center has used the data obtained from the Geodetic Satellite Program in a number of ways. Our investigations are divided into two separate categories which support the development of a World Geodetic System both directly and indirectly. The geometric application has been specific point positioning for the Test Ranges and the densification of geodetic control in South America. The dynamic application has been concerned primarily with determination of an earth gravitational model and tracking station locations from a combination of optical and electronic data supplemented with existing surface gravity anomalies. The status of the various efforts is presented. The Air Force will obtain Geoceivers during 4th quarter, FY 71, to replace the optical systems. A tri-service test has been designed for the period July-October 1971. The test objectives are presented along with results of simulated data from the proposed deployment schemes.