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<title>AAS 98-191</title><body BGCOLOR="ffffff"> <h2>AAS 98-191</h2> <h2>DETERMINATION AND PREDICTION OF ORBITS WITH DUE ACCOUNT OF DISTURBANCES AS A "COLOR" NOISE</h2> <h4>A. I. Nazarenko - Center for Program Studies, Russia</h4> <h2> Abstract </h2> The convenient-for-adaptation method of orbit determination with due account of a "color" noise is presented in this report. This technique has some common features with the Kalman filter. The difference consists in the fact, that, except two recurrent equations (for the state vector and for its correlation matrix), three additional functional recurrent equations were constructed: for noise estimations, for an a posteriori correlation function of noise, and also for a matrix of cross correlation of noise and state vector errors. Some examples of considered algorithm application are presented in the report. <P><A HREF="http://www.space-flight.org/AAS_meetings/1998_winter/sessions.html">Back</A>