Title :
Stability of a decoupled tracking filter with pseudomeasurements in line-of-sight Cartesian co-ordinate system
Author :
Whang, I.-H. ; Sung, T. ; Lee, J.G.
Author_Institution :
Dept. of Control & Instrum. Eng., Seoul Nat. Univ., South Korea
Abstract :
Since a decoupled tracking filter in the LOS Cartesian co-ordinate system (LCCS) is an approximation, its stability cannot be guaranteed. The paper presents a stochastic stability of the decoupled tracking filters in LCCS. A predicted LCCS is introduced to reduce the filter bias. Conditions of approximations to obtain a decoupled form are investigated. Using a Lyapunov-like condition, a sufficient condition is described for the decoupled tracking filter in LCCS to operate in a stable region.<>
Keywords :
Lyapunov methods; filtering and prediction theory; radar theory; stability criteria; stochastic processes; tracking; Lyapunov-like condition; decoupled tracking filter; line-of-sight Cartesian co-ordinate system; pseudomeasurements; radar; stochastic stability; Filtering; Lyapunov methods; Prediction methods; Radar theory; Stability criteria; Stochastic processes; Tracking;
Journal_Title :
Radar, Sonar and Navigation, IEE Proceedings
DOI :
10.1049/ip-rsn:19949652
