Evaluation of an adaptive filter as a digital tracking filter
David O. Smallwood, Dennis Gregory · NASA STI/Recon Technical Report N · 1976
An adaptive filter is developed for use as a digital tracking filter. The filter is non-recursive with two weights. The weights are changed (adapted) in response to an error signal; the error signal is driven to a minimum mean square value. It is shown that the tracking filter is easy to implement (4 multiply-adds/stage/sample point) and effective. The filter theory and characteristics are discussed, and several examples are presented. 9 figures, 1 table.