STUDY OF THE INFLUENCE OF ERRORS IN THE INITIAL SETTING OF INERTIAL NAVIGATION SYSTEMS ON THE ACCURACY OF ITS FUNCTIONING WITH THE DEVELOPMENT OF A COMPLEX COURSE SETTING DEVICE

In the article methods and facilities of initial exposure of inertial navigators are analysed in an azimuth, on the basis of analysis of algorithm of functioning of inertial navigators the mathematical model of the system is exhaust and after her help influence of errors of azimuth exposure is investigational on exactness of determination of navigation parameters. Researches resulted in a conclusion about the necessity of development of complex device of exposure of course with optimal descriptions. The use of an induction sensor for azimuthal alignment of an inertial navigation system allows its gyro platform to be pre- aligned approximately in the direction of the meridian without auxiliary devices, such as a theodolite, and the presence of a gyro compensation channel leads to an increase in the accuracy of azimuthal alignment, which ensures the achievement of an overall positive effect. Switching from the magnetic heading channel to the gyro compensation channel is performed automatically by a switching unit. Block diagram of the integrated heading setting device implemented in the indicator type gyro stabilizer. The research led to the conclusion that it is necessary to develop a complex heading setting device with optimal characteristics. The technical advantages of the developed device in comparison, for example, with the azimuthal attitude setting system of a small-sized inertial navigation system in operation are as follows: the time of azimuthal alignment of the inertial navigation system is reduced due to the preliminary rotation of the gyro platform to the north direction by the signal of the induction sensor; eliminates the need to use auxiliary tools, such as a theodolite; the accuracy of the alignment is improved by introducing an integrator and a switching device into the gyro compensation The use of an integrated heading setting device makes it possible to compensate for the latitudinal component of the steady- state azimuthal heading error using a simple technical device.