REDUCTION OF COMPUTATIONAL AND DATA TRANSMISSION REQUIREMENTS FOR TRAJECTORY ESTIMATION USING MULTIPLE SITES,
MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
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Space vehicles in free fall are often tracked from tracking sites located at different points on the earth. Two basic techniques for estimating the trajectory from the combined tracking data are discussed. These techniques are related to the maximum likelihood procedure but allow faster computation and do not require the transmission of all of the data to a common data reduction center.