Processing of filtered GPS data

Author

Smith, M.S. ; Ladde, G.S.

Author_Institution

Gen. Dynamics Corp., Fort Worth, TX, USA

Volume

25

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

711

Lastpage

728

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;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/7.42095

Filename

42095