NASA NTRS · 19760000569
Independent trajectory determination system
Abstract
Stand-alone subsystem calculates flight data analytically or numerically. System is orbit ephemeris generation program and is subsystem of comprehensive Goddard Trajectory Determination System (GTDS).
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Armstrong, M. G., Tomaszewski, I. B.. 1977-03-01. Independent trajectory determination system. https://ntrs.nasa.gov/citations/19760000569
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