Inertial Navigation Survey Systems

Inertial Navigation Survey Systems

Inertial Navigation Systems (INSs) are capable of accurately measuring the position of boreholes e.g. the Ferranti Inertial Navigational Directional Surveyor (FINDS) and the Ring laser Inertial Guidance System (RIGS).

An INS comprises a triad of accelerometers and gyroscopes respectively. The system is designed to measure the tool movement from its reference point. This is achieved by measuring acceleration with the accelerometers and rotation with the gyroscopes. Integrating with respect to time of acceleration measured yields change in velocity, and a second integration gives change in position. These displacements can be used to . . .