69th EAGE Conference and Exhibition incorporating SPE EUROPEC 2007 · 2007 · 23 citations · 2 references
EngineeringElectrical EngineeringElectromagneticsMicroelectronicsOptimizationDigital Signal ProcessingElectromagnetic CompatibilityElectromagnetic WavesNoise In Analog CircuitsSmall-signal AnalysisSignal-to-noise RatioSignal-to-noise Ratio AnalysisSignal-to-noise Ratio EnhancementSignal-to-noise Ratio OptimizationSource Time Function ModelingTransient Electromagnetic FieldsTransient Electromagnetic SimulationTransient Signal Processing
E048 Maximising Signal-To-Noise Ratio in Transient EM Data A.M. Ziolkowski* (MTEM Ltd) & R. Carson (MTEM Ltd) SUMMARY We describe the multi-transient electromagnetic method and focus on new technology to maximise the signal-to-noise ratio. The amplitude of the transient EM impulse response decays with offset r as 1/r^5. We employ a variety of techniques to maximize the signal: maximizing the input current ; increasing the source bi-pole length proportional to offset r but satisfying the constraint that the length must be less than a quarter of the offset; choosing the order of the PRBS source time function to be large
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