Abstract
Fiber strapdown inertial navigation system (FSINS) is presently used in several applications related to marine navigation. However, the absolute position from FSINS contains the error that increases with time, which prevents its long-term use for the ship cruise. In order to improve the performance of FSINS based on our present inertial sensors, the spin technology was proposed in the system to mitigate the navigation errors and a prototype of the proposed system was developed in Navigation Lab. The prototype contains the IMU, temperature controller, rotating configuration, navigation and I/O electronics group, control and display, power supply subsystem and other modules. In the proposed spin technology, the IMU is rotated back and forth in azimuth through four orthogonal positions relative to the ship’s longitudinal axis. Experimental testing was conducted for the prototype in the laboratory and the results showed that the RFSINS’s navigation performance is improved 10 times.
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This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 60834005, 60775001 and 41304032), China Postdoctoral Science Special Foundation (Grant No. 2013T60298), the China Postdoctoral Science Foundation (Grant No. 2012M510830), the Research Project from Liaoning Education Department (Grant No. L2011047); the Startup Foundation for Doctors from Liaoning Science and Technology Department (Grant No. 20121084), and the Open Research Fund of State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing (Grant No. 12P01).
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Sun, W., Sun, F. & Wang, Dx. High precision fiber SINS with spin technology. China Ocean Eng 27, 693–702 (2013). https://doi.org/10.1007/s13344-013-0058-0
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DOI: https://doi.org/10.1007/s13344-013-0058-0