LAUSR

Calibration of 3C VSP data is an exciting challenge because the orientation of the tool is random when only seismic data is considered. In this work we augment the sensor package on the VSP tool with MEMS inertial sensors and apply a gesture measuring method to determine the tool orientation and calibration. This technique can quickly produce high-precision, orientation and angle information when integrated with the seismometer. The augmented sensor package consists of a low-cost triaxial MEMS gyroscope, an electronic compass and an accelerometer. The technique to process the gesture information is based on the OpenGL software for 3D modeling. We have tested this approach on a large number of field datasets and it appears to be faster and more reliable than other approaches.