2009•Unpublished venueRequires access

A New Scheme of Gyroscope Free Inertial navigation System Using 9 Accelerometers

Fangjun Qin, Jiangning Xu, Sai Jiang

Abstract

In order to improve the convenience of installation and calibration of accelerometers, and to avoid the limitation of angular rate calculation in gyroscope free strapdown inertial navigation system (GFINS),a new scheme of gyroscope free inertial navigation system using 9 accelerometers is proposed. All 9 accelerometers are installed on three orthogonal axes, with orientations parallel to the three orthogonal axes respectively. Navigation principle and calculation procedure of the 9-accelerometer based GFINS is presented. Numerical simulations are carried out. Simulation results show that the design of scheme of GFINS is feasible and effective.

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Key concepts: Accelerometer, Gyroscope, Inertial navigation system, Inertial reference unit, Rate integrating gyroscope, Inertial frame of reference, Inertial measurement unit, Computer science