The paper considers a line of sight (LOS) stabilization and pointing system (LSPS) based on a mirror system, which provides target tracking for horizontal and vertical pointing within 180°. A mathematical model of LSPS kinematic motion is ob- tained, which takes into consideration the specifics of LSPS optical system. A con- trol method is proposed, which ensures LSPS operation under any horizontal and vertical pointing angles, and provides stability of the kinematic system. Results of MatLab modeling of the considered nonlinear system are given.

In this paper the issues of implementation of programmed tracking ground objects from aerial vehicles, using several surveillance and targeting systems, are considered. Various mathematical descriptions of programmed tracking are presented. The advantages of quaternion-based programmed tracking, relative to solutions implemented with angular coordinates, are shown. The modeling of the process of programmed tracking has been done in the limiting cases. The problem of programmed tracking ground objects is urgent, and its solution has valuable application in practice.

An adaptive algorithm for motion control (24) has been developed on the basis of a linear model of ship motion with the use of the backstepping method. Simulation of automatic ship control in the course of ship motion on a predetermined path has been carried out in the conditions of varying coefficients of the nonlinear model of ship motion for an unsteady river boat. The computing experiment has shown that adaption of ship motion model coefficients to sailing conditions improves the accuracy in following a nonlinear motion path. However, if the requirements for accuracy in following a predetermined path are not very strict, the algorithm provides for following on a predetermined path, even without adaptation of the coefficients of the ship motion model. The algorithm developed can be used to control un- manned submersible, including performance of tasks concerned with motion on intricately-shaped paths

Department of Laser Measurement and Navigation Systems at St. Petersburg State Electrotechnical University is engaged in research and development of test beds for inertial systems and sensors. We present a range of test beds from single-axis turn- tables to precision three-axis test beds with temperature chambers. The paper focuses on an SDA-15 automatic two-axis test bed and presents the program and procedure for its initial and periodical qualification testing. Metrological solutions include both the traditional methods of performance evaluation and a customized contactless procedure to evaluate nonorthogonality of two rotation axes.

Mathematical models of the thermal processes for the base gyro FOG-035 and for the modernized gyro are constructed. In the models the orientation of the gyro in a field of accelerations and pressure variations of an environment are considered. Models allow to simulate space conditions of vacuum and weightlessness. The supporting software is developed. Adequacy of models on the basis of comparison with experimental data is checked up. The thermal analysis of fiber-optical gyro FOG-035 is conducted. Qualitative and quantitative estimations of influence on a temperature situation in FOG-035 of the thermal screen, of extreme conditions of vacuum and weightlessness, of various orientation of the device, etc., are received. Passive methods of thermal invariancе of the sensor are developed and studied.

Mathematical models of the thermal processes for the base gyro FOG-035 and for the modernized gyro are constructed. In the models the orientation of the gyro in a field of accelerations and pressure variations of an environment are considered. Models allow to simulate space conditions of vacuum and weightlessness. The supporting software is developed. Adequacy of models on the basis of comparison with experimental data is checked up. The thermal analysis of fiber-optical gyro FOG-035 is conducted. Qualitative and quantitative estimations of influence on a temperature situation in FOG-035 of the thermal screen, of extreme conditions of vacuum and weightlessness, of various orientation of the device, etc., are received.

Passive methods of thermal invariancе of the sensor are developed and studied.

The way of algorithmic error correction of the angular position of ring laser gyroscope with a dither without an angular position sensor. It is shown that, in applying this correction accuracy of the angular position is not inferior to the method using the angular position sensor.

The paper presents motion equations of the rotors the rotation axes of which are located at the spacecraft launch in the orbit plane and orthogonally to it. Analytic solutions of the motion equations using the drift deterministic model for the gimballess electrostatically suspended gyro are given, various physical agents effect on the motion parameters is studied. Correspondence between the solutions obtained and the flight tests experimental data is shown.

The basic principles of the construction of the integrated navigation control system are considered. These principles are determined and realized with deep structural and hardware modernization of the launcher «Soyuz-2». The results of full-scale tests and data of considerably new characteristics of the updated control system are given. These data are received both for the prelaunch planning stage and for the launcher flight leg on the basis of a wide implementation of digital systems.

The problem of the identification of the linear model (4) by means of least squares method is considered. The goal of the research is to investigate the quality of the identification in relation with the experiment design that is the selection of the input signal and the velocity of the ship. Two realizations of the least squares method, which are presented in the MATLAB environment, are compared.

The given work is directed on defining what orientation of silicon structure (100), (110), (111), is most preferable to various types micromechanical accelerometers. As monocrystal silicon is anisotropic, i.e. has various properties in various directions also micromechanical accelerometers various type there will be differently to behave in the same orientation. As a result of the given work models micromechanical accelerometers translation and pendular types are created and by means of computer complex ANSYS are defined: dependence of self-frequencies, dependence of the output characteristic and dependence of scale factor on temperature at various orientations of silicon structure. The basic results of work are conclusions about what orientation of silicon is the most preferable to each of types micromechanical accelerometers. The problem of choosing orientation is very important, and so discussion this problem expect special attention from us. Today in Russia few works discuss this problem, but problem solving, will be able to solve many another problems.

The paper considers the results of noise correlation matrices research for the first prototype of 4-axial fiber-optic gyroscope (FOG) developed by the Scientific & Research Institute for Applied Mechanics named after academician V.I. Kuznetsov. A new source of noises (in addition to the noise of single light source) which is correlated in the FOG's information channels was detected.