This paper deals with several transfer alignment(TA) techniques of SDINS (Strap-Down Inertial Navigation System),including velocity matching, attitude matching, angular rate matching and velocity-plus-attitude matching approaches.
Under the condition of high dynamic angular motion or vibration environment, confirmed and corrected the sculling error is important to calculated the speed of strap-down inertial navigation system.
This paper gives a method for correcting the gyro random constant drift errors of strapdown attitude and heading reference system on waving base while mooring. That is, two digital filters are used for minimizing the pitch and roll errors, unchangeable positions are used as observors. Therefore the gyro random constant drift errors are identified and corrected. Finally, judging from computer simulation result, the method is efficient and significant for calibration of gyro random constant drift errors.
The strapdown inertial navigation system is a kind of advanced autonomous navigation systems which can supply attitude and position signals of higher accuracy with a lower cost than other system.Specialists in the navigation-aid field in many countries have been paying attentions to it recently. In this paper,the data sampling methods of the inertial elements are discussed,a data sampling circuit for the inertial elements of marine strapdown inertial navigation system is presented and the data sampling,sync...
In order to test and debug the marine Strapdown Inertial Navigation System(SINS)in laboratory, it is required to establish all the working states. With the limitation of outputs of inertial devices, however, it is im- possible to obtain all these states. Therefore, a simulator which can solve the problems mentioned above would be helpful for people to test and develop the hardware, and to debug the software of marine SINS. This paper introduces such a simulator which can produce most of typical modes of the...