Recovery of 5 Degrees Mean Gravity Anomalies in Local Areas from ATS-6/GEOS-3 Satellite to Satellite Range-Rate Observations.
OHIO STATE UNIV COLUMBUS DEPT OF GEODETIC SCIENCE
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The recovery of 5 deg equal area mean anomalies is investigated from ATS-6GEOS-3 SST real range-rate data using the least squares collocation method. The observational errors can be very satisfactorily filtered out by using piecewise continuous cubic splines with continuous first and second derivatives to fit the range-rate data in the least squares sense. The accelerations are obtained by analytical differentiation of the fitted spline. The accelerations are obtained optimally, matching the smoothness characteristics expected at GEOS-3 altitudes, if the nodes of the spline, where adjacent cubic polynomials meet, are kept every 60 seconds to fit range-rate observations at 10 seconds interval.
- Unmanned Spacecraft