The Utility of Orthonormal Bases
نویسنده
چکیده
There has been recent interest in using orthonormalised forms of xed denominator model structures for system identiication. However, modulo numerical conditioning considerations, the transfer function estimates obtained by using these sometimes complex to implement structures are identical to that obtained by simply pre-ltering the input with an all pole denominator (with poles the same as the orthonormal form) and using pre-existing software for FIR identiication to estimate the numerator co-eecients. In recognition of this, the report here provides detailed comment on the utility of using orthonormally parameterised model structures in a system identiica-tion setting.
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