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To take full advantage of inertial components of fiber-optic gyroscope strapdown inertial navigation system (FOG SINS), the influence of installation error of FOG and accelerometer on the output of FOG SINS should be considered. The characteristic of vibrant signal is picked up by analyzing the signals of accelerometer with power spectral density, then an effective vibrant error compensation scheme...
In order to improve the accuracy of strapdown inertial navigation system, the constant drift of gyro and the bias of accelerometer in inertial measurement unit (IMU) will be translated into periodic signal by the rotation of IMU, and the undesirable effects of constant drifts of inertial components can be eliminated by integral operations. The uniaxial unidirectional and reciprocating rotary compensation...
The basic principle of the strapdown inertial navigation accelerometer signal acquisition unit is proposed in this article firstly. The acquisition unit is analysed in many error characteristics, such as the bias stability and the scale factor stability. The main targets of the acquisition unit is presented, then the performance of essential components which conclude sampling resistance, operational...
This paper proposes the fusion of GPS measurements and inertial sensor data from gyroscopes and accelerometers in tightly-coupled GPS/INS navigation systems. Usually, an extended Kalman filter (EKF) is applied for this task. However, as system dynamic model as well as the pseudorange and pseudorange rate measurement models are nonlinear, the EKF is sub-optimal choice from theoretical point of view,...
The formalized method is presented for improving the accuracy and efficiency of sculling correction algorithms as opposed to the conventional methods using angular increment and velocity increment as input signals. The key point of the new algorithm is the use of angular rate and specific force output from sensors to design optimal coefficients which is suitable for modern-day strapdown inertial navigation...
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