Abstract
Consider the cubic sensor dx = dw, dy = x3dt + dv where w, v are two independent Brownian motions. Given a function φ(x) of the state x let φt(x) denote the conditional expectation given the observations ys, 0 ≤ s ≤ t. This paper consists of a rather detailed discussion and outline of proof of the theorem that for nonconstant φ there cannot exist a recursive finite-dimensional filter for φ driven by the observations.
Original language | English (US) |
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Pages (from-to) | 331-340 |
Number of pages | 10 |
Journal | Systems and Control Letters |
Volume | 3 |
Issue number | 6 |
DOIs | |
State | Published - Dec 1983 |
All Science Journal Classification (ASJC) codes
- Control and Systems Engineering
- General Computer Science
- Mechanical Engineering
- Electrical and Electronic Engineering
Keywords
- Cubic sensor
- Recursive filter
- Robust filtering
- Weyl Lie algebra