Natural SciencesEarth SciencesGeophysicsRemote SensingSeismologyTime Series AnalysisDigital Signal ProcessingGeophysical Data ProcessingGeophysical Signal ProcessingRadar Signal ProcessingSignal Detection TheorySignal ProcessingEnvelope DetectionEnvelope EstimationNoise EstimationQuasi-periodic DynamicsQuasi-periodic MotionQuasi-periodic OscillationsWave Envelope Statistics