1. Maximising Signal-To-Noise Ratio in Transient EM Data
- Author
-
Richard Carson and Anton Ziolkowski
- Subjects
medicine.medical_specialty ,Amplitude ,Source time function ,Offset (computer science) ,Telmatology ,Control theory ,medicine ,Geomorphology ,Pseudorandom binary sequence ,Geology ,Metamorphic petrology ,Impulse response - Abstract
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
- Published
- 2007