Never music to your ears: “blind system, offline sensor, compromised data, reshoot”
Our innovative WiNG land nodal solution provides wireless QC monitoring to ensure your land projects acquire data as planned. See important status indications on battery level, memory, GPS, sensor, and ambient noise. Our intelligent, self-healing network is engineered to deliver the data you need to make better operational decisions.
“Data Jitter” and “low fidelity” from old technology can diminish survey quality
Sensor related data jitter is an amplitude and phase variation of the recorded seismic signal solely related to variations in sensor instrument response. These variations are introduced as a result of the manufacturing process even when within the threshold of the published specification’s tolerances. Sensor material aging and temperature variation are additional contributing factors. Geophones exhibit data jitter while MEMS sensors do not.
Geophones are complex mechanical devices manufactured using a range of materials; metal alloys (spring, coil, housing), plastics (outer case), rare earth material (magnet). The properties of these materials are subject to ageing during their lifetimes (spring creeping/hardening, demagnetization) and drift due to thermal changes (coil resistance, spring stiffness, etc).
Geophone sensitivity is mainly determined by the spring stiffness, electromagnetic field induced by the permanent magnet, and the coil mass. All of these parameters are subject to ageing, drift and manufacturing tolerance.
Sercel MEMS accelerometers are fabricated using a 100% silicon substrate, a material known for its stability, immunity to ageing and minimal thermally induced drift of its mechanical or electrical properties. The sensitivity of Sercel’s QuietSeis® sensors (closed loop MEMS accelerometer) is in fact only determined by the silicon electrode size (manufactured using techniques similar to those used in microelectronics with submicron tolerances) and by the applied voltage that can be set with extremely high degrees of accuracy.
Sensor related data jitter is therefore a phenomenon observed only in geophones and is especially evident in high sensitivity geophones. While amplitude data jitter will affect the full seismic frequency band, phase data jitter will also have a significant impact at lower frequencies.
It's the clear choice
This revolutionary, broadband nodal solution offers many technological advantages to traditional geophones and other inferior analog systems.
Sercel’s WiNG land nodal solution provides users with unmatched confidence through active feedback and real-time QC, enhanced data fidelity, and a robust feature set to deliver smart and reliable data, no matter the conditions.
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