Error model identification on digital map of TAN system based on EKF

Author

Wang, Wei ; Chen, Zhe

Author_Institution

Dept. of Acoust. Control., Beijing Univ. of Aeronaut. & Astronaut., China

fYear

1994

fDate

5-9 Dec 1994

Firstpage

818

Lastpage

822

Abstract

In terrain-aided navigation (TAN) system based on extended Kalman filtering (EKF), the digital elevation map (DEM) data are used to update the inertial navigation system (INS). In this paper three error sources are related to DEM by the modelling of TAN system, acquired and discussed in a given terrain area, these errors are smooth stochastic processes modelled as ARMA (1,0) or ARMA (2,0) except for the nonsmooth stochastic process of terrain stochastic linearization (TSL) with adaptive fit technology. The augmented TAN systems are modelled and simulated. All the results of this paper can be used to improve TAN system accuracy

Keywords

Kalman filters; autoregressive moving average processes; computerised navigation; error statistics; identification; inertial navigation; linearisation techniques; stochastic processes; ARMA (1,0) processes; ARMA (2,0) processes; EKF; TAN system; digital elevation map; digital map; error model identification; extended Kalman filtering; inertial navigation system updating; stochastic processes; terrain stochastic linearization; terrain-aided navigation; Aircraft navigation; Equations; Filtering; Inertial navigation; Kalman filters; Sea level; Sea measurements; State estimation; Stochastic processes; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Technology, 1994., Proceedings of the IEEE International Conference on

Conference_Location

Guangzhou

Print_ISBN

0-7803-1978-8

Type

conf

DOI

10.1109/ICIT.1994.467025

Filename

467025