Accession Number : AD0739599

Title :   On-Line Tracking of Six Orbital Elements of a Thrust Maneuvering Space Vehicle,

Corporate Author : RENSSELAER POLYTECHNIC INST TROY N Y

Personal Author(s) : Yong,K. ; Shen,C. N.

Report Date : 1971

Pagination or Media Count : 34

Abstract : The problem of on-line tracking of the state variables of a thrust maneuvering space vehicle in three dimensional space described by non-linear discrete dynamical and measurement equations is studied for several different estimation schemes. A second order filtering relation is derived for a discrete non-linear plant which adds bias correction terms to the quasilinear filter. The rapid estimation scheme for a nonlinear system is employed both to provide the starting algorithm and whenever the state jump is detected. The digital computer evaluation indicates that the estimates of the states by the combination of a second order filter with the rapid estimation scheme is superior to the results obtained from quasilinear filtering techniques for the application of tracking the thrust maneuvering space vehicle. (Author)

Descriptors :   (*SATELLITE TRACKING SYSTEMS, RADAR TRACKING), (*RADAR TRACKING, MANEUVERING SATELLITES), NONLINEAR SYSTEMS, STOCHASTIC PROCESSES, EQUATIONS OF MOTION, MATHEMATICAL MODELS, ORBITS, THRUST, MATRICES(MATHEMATICS), NUMERICAL ANALYSIS

Subject Categories : Statistics and Probability
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE