Gyroscopic surveying system utilizing one dual-axis dynamically tuned gyroscope and two accelerometers has been suggested to work at continuous mode to improve surveying efficiency. Investigation of how various error sources influence on the accuracy of the new continuous surveying system is helpful when finding ways to enhance the longterm performance. This article aims at analyzing the surveying errors associated with proposed continuous surveying algorithm, including algorithm errors, sensor errors, etc. The influence of each source on surveying result is formulated. It also offers some techniques to enhance the long-term surveying accuracy. The algorithm is modified to improve the toolface angle surveying accuracy. The biases of gyro and accelerometers are periodically modulated by continuous rotation. The modulated output signals are sampled and disposed, then surveying errors are reduced. Simulation results indicate that suggested methodology significantly improved the surveying accuracy.

Date Published: 6 November 2006
PDF: 6 pages
Proc. SPIE 6357, Sixth International Symposium on Instrumentation and Control Technology: Signal Analysis, Measurement Theory, Photo-Electronic Technology, and Artificial Intelligence, 63572V (6 November 2006); doi: 10.1117/12.717149

Published in SPIE Proceedings Vol. 6357:
Sixth International Symposium on Instrumentation and Control Technology: Signal Analysis, Measurement Theory, Photo-Electronic Technology, and Artificial Intelligence
Jiancheng Fang; Zhongyu Wang, Editor(s)