On the Increase of Resolution of CT-Type Concentration Meter By Application of Wavelet Transform Technique

Abstract

We first analyzed the reason of error accompanied in the CT-type laser concentration meter, to conclude that pulse-like error signals are caused by laser light which passes through the space between fine spray particles of tracer without decay. A technique is proposed to eliminate these error signals by application of wavelet transform.
The wavelet transform technique is further applied to the inverse problem of estimating the concentration field from the information of decay rates of laser light at receivers.