Analysis of non-stationary mode coupling by means of wavelet-bicoherence
نویسندگان
چکیده
We present a definition of wavelet-bicoherence based on waveletpolyspectra. We propose a simple estimator for wavelet-bicoherence, and discuss its statistical properties. In particular it is shown that wavelet-bicoherence estimates has a larger number of effective degrees of freedom than traditional Fourier-based bicoherence estimates. The proposed estimator is applied to detection of coherent couplings in rocket measurements from the ionospheric E-region. It is concluded that wavelet-bicoherence is a well suited tool for analysis of non-stationary mode coupling.
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