Title :
Processing of filtered GPS data
Author :
Smith, M.S. ; Ladde, G.S.
Author_Institution :
Gen. Dynamics Corp., Fort Worth, TX, USA
fDate :
9/1/1989 12:00:00 AM
Abstract :
General sufficiency conditions are developed for the stability of a discrete-time cascaded-filter architecture. An application of the result is in the filtering of prefiltered Global Positioning System (GPS) data during times in which the GPS receiver is tracking less than four satellites. Simulation results are presented for the case where the master filter processes the GPS filter estimate after the GPS filter attains uniform complete observability and controllability following its third filter cycle as well as the case where the observability condition is not met
Keywords :
aerospace simulation; cascade networks; controllability; discrete systems; filtering and prediction theory; observability; satellite relay systems; signal processing; stability; tracking systems; GPS; Kalman filter; aerospace control; controllability; discrete-time cascaded-filter architecture; master filter; observability; prefiltered Global Positioning System; simulation; stability; Clocks; Computer errors; Covariance matrix; Error correction; Filters; Global Positioning System; Inertial navigation; Information filtering; Signal processing; Stability;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
