Experiments for improved positioning by means of integrated Doppler satellite observations and the NNSS broadcast ephemerisA study to improve position determination using broadcast ephemeris in Doppler data reduction is presented. The uncertainty of the broadcast ephemeris was assessed, and sample autocovariances were computed for acceleration, velocity, and position considering the state disturbance as a signal. An experiment was made in which three stations coobserved 12 passes, and the removal of the radial bias resulted in a chord distance which was in better agreement with the ground survey. In the second experiment, the station positions of the first test simulated the range observations, and the autocovariance function of the acceleration signal in the Cartesian coordinate system was used in an adaptive filtering procedure to improve the state of the satellite in one pass.
Document ID
19800040603
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Arur, M. G. (Survey of India Geodetic and Research Branch, Dehra Dun, India)
Date Acquired
August 10, 2013
Publication Date
January 1, 1979
Subject Category
Earth Resources And Remote Sensing
Meeting Information
Meeting: International Geodetic Symposium on Satellite Doppler Positioning