Non-linear swept frequency technique for CO2 measurements using a CW laser system
Atmospheric and Oceanic Physics
2013-04-30 v1 Instrumentation and Methods for Astrophysics
Abstract
A system using a non-linear multi-swept sine wave system is described which employs a multi-channel, multi-swept orthogonal waves, to separate channels and make multiple, simultaneous online/offline CO2 measurements. An analytic expression and systematic method for determining the orthogonal frequencies for the unswept, linear swept and non-linear swept cases is presented. It is shown that one may reduce sidelobes of the autocorrelation function while preserving cross channel orthogonality, for thin cloud rejection.
Keywords
Cite
@article{arxiv.1303.4933,
title = {Non-linear swept frequency technique for CO2 measurements using a CW laser system},
author = {Joel F. Campbell},
journal= {arXiv preprint arXiv:1303.4933},
year = {2013}
}
Comments
22 pages, 11 figures. Submitted to Applied Optics on 03/06/2013