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Initial alignment is of vital importance to inertial navigation systems (INS). The two main methods of self-alignment, the traditional gyro-compassing alignment method and the Kalman filter method, are discussed. We apply and compare the two methods via simulation and test in use of a strapdown inertial navigation system (SINS) based fiber optic gyroscope (FOG), respectively. The simulation and test...
Initial alignment is of vital importance to inertial navigation systems (INS). There are mailnly two popular methods in self-alignment, which are traditional gyrocompassing alignment algorithm and kalman filter algorithm. After giving the basic principle of the two, we do some simulation and test in use of INS based fiber opitic gyroscope (FOG). The simulation and real experiment show that kalman...
Though fiber optic gyroscope strapdown inertial navigation system (FOG-SINS)/Doppler radar/baro-altimeter integrated navigation system has been done some research in theory, the appropriate study of practice has not been done yet in China and there are still many problems need to be solved. This paper gives a new design of a low cost FOG-SINS/Doppler radar/baro-altimeter integrated navigation system...
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...
A series of river trials are carried out to verify the feasibility of the velocity matching method and the velocity plus attitude matching method. First of all, a hardware-in-the-loop simulation system is designed in this paper. Secondly, the kalman filter models for velocity matching and velocity plus attitude matching are introduced. Four types of river trials are done, respectively, velocity matching...
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