1303.4933 (Joel F. Campbell)

Non-linear swept frequency technique for CO2 measurements using a CW laser system    [PDF]

Joel F. Campbell

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.

View original: http://arxiv.org/abs/1303.4933