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<title>AAS 98-193</title><body BGCOLOR="ffffff"> <h2>AAS 98-193</h2> <h2>ORBIT DETERMINATION PERFORMANCE EVALUATION OF THE DEEP SPACE 1 AUTONOMOUS NAVIGATION SYSTEM</h2> <h4>S. Bhaskaran, S. D. Desai, P. J. Dumont, B. M. Kennedy, G. W. Null, W. M. Owen, J. E. Riedel, S. P. Synnott, R. A. Werner - Jet Propulsion Laboratory</h4> <h2> Abstract </h2> The first test of a fully autonomous onboard navigation systems will be performed as part of the technology validation for the New Millennium Program's Deep Space 1 mission. The mission goal is to flyby an asteroid, Mars, and a comet. The navigation system uses images of asteroids as beacons with which to triangulate the spacecraft position. The onboard orbit determination system then filters these observations to obtain the full spacecraft state, after which maneuvers are performed to achieve the desired flyby targets. This paper evaluates the performance of the orbit determination system in terms of its ability to deliver the spacecraft to the asteroid given the expected errors in the dynamics and data. <P><A HREF="http://www.space-flight.org/AAS_meetings/1998_winter/sessions.html">Back</A>