Accession Number : AD0760791
Title : Extensions to SAGA (Short Arc Geodetic Adjustment) for the Geodetic Reduction of Doppler Operations.
Descriptive Note : Final rept. Jul 71-Jan 73,
Corporate Author : DBA SYSTEMS INC MELBOURNE FLA
Personal Author(s) : Brown,Duane C. ; Trotter,Jerry E.
Report Date : JAN 1973
Pagination or Media Count : 71
Abstract : Several significant extensions to the AFCRL program SAGA (Short Arc Geodetic Adjustment) have been implemented and tested. These include: improved corrections for tropospheric refraction; capability of exercising on option the precise NWL ephemeris as defined by minute vectors; automatic detection and removal of cycle count errors; an option for processing Geoceiver observations as if they were Intermittently Integrated Doppler (IID) observations; an option to exercise base line constraints expressed in terms of geodesic azimuths and distances; an option to define the coordinate system of the tracking net by means of G. Blaha's 'Inner Adjustment Constraints'; an option to recover relative timing synchronization between stations independently of satellite timing signals; extension of the orbital integrator to accommodate an earth potential defined by spherical harmonics of arbitrarily high degree and order (n,m). By virtue of these extensions SAGA has become a more accurate and more versatile tool for satellite geodesy. (Author)
Descriptors : (*SATELLITE TRACKING SYSTEMS, POSITION FINDING), GEODESICS, SCIENTIFIC SATELLITES, ORBITS, RANGE FINDING, TROPOSPHERE, REFRACTIVE INDEX, MATHEMATICAL MODELS, DOPPLER EFFECT
Subject Categories : Geodesy
Distribution Statement : APPROVED FOR PUBLIC RELEASE