제어로봇시스템학회:학술대회논문집
- 2005.06a
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- Pages.2532-2537
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- 2005
Two-Stage Estimator Design Using Stable Recursive FIR Filter and Smoother
- Kim, Jong-Ju (Agency for Defense Development) ;
- Kim, Jae-Hun (Agency for Defense Development) ;
- Lyou, Joon (Department of Electronics Engineering, Chungnam National University)
- Published : 2005.06.02
Abstract
FIR(Finite Impulse Response) filter is well known to be ideal for the finite time state-space model, but it requires much computation due to its inherent non-recursive structure especially when the measurement interval grows to a large extent. And often a fixed-lag smoother based on the finite time interval is needed to monitor the soundness of the system model and the measurement model, but the computation burden of FIR-type smoother imposes much restriction of its usage for real-time application. Conventional recursive forms of FIR estimator[1]-[4] could not be used for real time applications, since they are numerically unstable in their recursive equations. To cope with this problem, we suggest a stable recursive form FIR estimator(SRFIR) and its usefulness is demonstrated for designing the real-time fixed-lag smoother on the finite time window through an example of detection of rate bias in the anti-aircraft gun fire control system.
Keywords
- Finite Impulse Response(FIR);
- Recursive form of FIR filter(RFIR);
- Stable RFIR (SRFIR);
- Fixed-lag Smoother;
- Sub-optimal fixed-lag smoother;
- Anti-Aircraft Gun Fire Control System(AAGFCS)