Application and Development of Fiber Optic Gyroscope Inertial Navigation System in Underground Space

Abstract

Fiber Optic Gyroscope Inertial Navigation System (FOG-INS) is a navigation system using fiber optic gyroscopes and accelerometers, which can offer high-precision position, velocity, and attitude information for carriers. FOG-INS is widely used in aerospace, marine ships, and vehicle navigation. In recent years, it has also played an important role in underground space. For example, in the deep earth, FOG-INS can be used in directional well drilling, which can enhance recovery in resource exploitation. While, in shallow earth, FOG-INS is a high-precision positioning technique that can guide construction in trenchless underground pipelaying. This article extensively reviews the application status and latest progress of FOG-INS in underground space from three aspects—FOG inclinometer, FOG drilling tool attitude measurement while drilling (MWD) unit, and FOG pipe-jacking guidance system. First, measurement principles and product technologies are introduced. Second, the research hot spots are summarized. Finally, the key technical issues and future trends for development are put forward. The findings of this work are useful for further research in the field of FOG-INS in underground space, which not only provides new ideas and directions for scientific research, but also offers guidance for subsequent engineering applications.

CEEMDAN-LWT De-Noising Method for Pipe-Jacking Inertial Guidance System Based on Fiber Optic Gyroscope

“…The fiber optic gyroscope (FOG) is an all-solid-state angular velocity-sensitive device, and it can be sensitive to the angular velocity of the Earth’s rotation, which has the advantage of autonomous navigation [ 3 ]. Therefore, the pipe-jacking inertial guidance system uses FOG as a primary sensor to provide real-time attitude measurements for long-distance curved pipe-jacking [ 4 ]. But in practical applications, large motor and transformer operations will produce vibrations, electromagnetic disturbances, and other environmental interference due to the rotation of the pipe-jacking cutter.…”