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Article Navigation> JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY> 2010> 19(4): 439-444
ZHANG Lun-dong, LIAN Jun-xiang, WU Mei-ping, ZHENG Zhi-qiang. Error Model of Rotary Ring Laser Gyro Inertial Navigation System[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2010, 19(4): 439-444.
Citation: ZHANG Lun-dong, LIAN Jun-xiang, WU Mei-ping, ZHENG Zhi-qiang. Error Model of Rotary Ring Laser Gyro Inertial Navigation System[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2010, 19(4): 439-444.
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Error Model of Rotary Ring Laser Gyro Inertial Navigation System

  • College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, China

  • Received Date:2009-11-28
    Abstract
  • To improve the precision of inertial navigation system (INS) during long time operation, the rotation modulated technique (RMT) was employed to modulate the errorr of the inertial sensors into periodically varied signals, and, as a result, to suppress the divergence of INS errors. The principle of the RMT was introduced and the error propagating functions were derived from the rotary navigation equation. Effects of the measurement error for the rotation angle of the platform on the system precision were analyzed. The simulation and experimental results show that the precision of INS was ① dramatically improved with the use of the RMT, and ② hardly reduced when the measurement error for the rotation angle was in arc-second level. The study results offer a theoretical basis for engineering design of rotary INS.
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