Sixth US/Russian Space Surveillance Workshop: August 22-26, 2005, Proceedings

accuracy algorithm altitude analysis ARIMA Astrodynamics atmospheric model autoregression average b₁ and b₂ b₂ time series ballistic coefficient calculated camera candidate user catalogue computed correlation covariance COWPOKE density model density variations detection difference drag coefficient equations errors estimates explosion extreme user Figure forecasting fragments GEO objects GEO region GEODSS geomagnetic geostationary interval Jacchia Kalman filter Laplace plane latitude longitude magnitude maximum measurements method microradians motion nonlinear filters NRLMSIS-00 model observations Observatory obtained operations optical orbit determination orbital elements particle filter performance parameter perigee perturbations plotted prediction Pulkovo radar re-entry requirements right ascension Russia SATA sensor semiannual variation SGP4 sigma particle Sixth US-Russian Space solar activity solar cycle solar minimum Space Debris space objects Space Surveillance Workshop space weather spacecraft spheres Starshine statistical strategy sunspot Table telescope thermospheric track US-Russian Space Surveillance utility functions vector velocity weights