Matveeva T.V.,Korolev Rocket Space Corporation |
Belyaev M.Yu.,Korolev Rocket Space Corporation |
Zavalishin D.A.,JSC Russian Space Systems |
Sazonov V.V.,RAS Keldysh Institute of Applied Mathematics
Proceedings of the International Astronautical Congress, IAC | Year: 2014
The paper presents results of microacceleration research performed onboard the Russian Segment of the International Space Station (ISS RS) with the frequencies from 0 to 2 Hz. Micro accelerations measured in different flight modes were studied: in flight without dynamic operations, during operations of docking and undocking, in modes with Service Module thrusters burning. Onboard accelerometer measurements, telemetry information about the station attitude and orbital motion were analyzed in research. Quasi-steady microacceleration component (with frequencies from 0 to 0.01 Hz), which is the most essential for some physical processes investigated on the spacecraft, was of primary interest in research. The quasi-steady microacceleration component was calculated using different techniques to approximate the station attitude motion. Telemetry data of the station angular rate and the quaternion of its attitude with respect to the inertial coordinate system were used for reconstruction of the station attitude motion. The calculations were based on kinematical equations of motion of the station as of an absolutely rigid body. This approach allows to approximate motion of any type and to estimate the quasi-steady microacceleration component at any point of the ISS as a function of time. The results of such calculations were used to verify onboard accelerometers. The method described above was used to recalculate the low frequency micro-accelerations measured by the accelerometers from the point of their location to the required point on the station with the purpose to estimate the level of residual micro-accelerations in that point and to get more realistic initial data for microaccelerations mathematical modeling in some space experiments with liquid motion. In particular, the calculated analogs of the real signals incoming into the DACON convection sensor were generated during the experiments on the ISS. Comparison of calculated input data with real output signals gave good results and proved that sensors of such type can be used to monitor low frequency microaccelerations onboard spacecraft. Analysis of the microaccelerations measurements obtained onboard the ISS also allowed to solve some additional problems of its flight control. Taking into account the results of the ISS RS microaccelerations environment investigation we proposed to perform experiments with the DACON sensor on the Progress transport cargo vehicle upon completion its mandatory functions of the ISS supporting. For that purpose, special methods of the Progress vehicle flight control during microgravity research were developed and series of technical experiments to test the proposed methods were executed with the "Progress M-20M" vehicle in 2014.
Kozlov D.V.,Russian Academy of Sciences |
Semenov V.L.,JSC Russian Space Systems
Instruments and Experimental Techniques | Year: 2015
Equipment on the basis of a CMOS video camera for analyzing deformations of mobile elements of microelectromechanical devices with dimensions ranging from hundreds of microns to several millimeters within a temperature range of 103–423 K in the presence of external perturbing factors in the form of an applied load or electric pulses is described. The possibility of the setup of determining the parameters of the angular displacements of experimental specimens with dimensions of the deformed region of 0.24–9.8 mm with an absolute error of no worse than 0.11° and an applied load with a relative error of up to 2.3% in a range of 10-5-10-2 N is demonstrated. The results of the research consist in direct and inverse dependences: “load—deformation,” “temperature—deformation,” and “signal–deformation,” which characterize the object-motion kinematics in statics and dynamics at a frequency of up to 50 measurements/s. The equipment is used in both the manual mode, when objects of different types are studied, and a semiautomatic mode, if similar objects are studied. © 2015, Pleiades Publishing, Inc.
Romanov A.A.,JSC Russian Space Systems |
Proceedings of the International Astronautical Congress, IAC | Year: 2013
The first nanosatellite developed in JSC «Russian Space Systems» was launched in 2005 from ISS and its construction was used as the basis for the whole series of the technological satellites. According to the obtained experience the nanosatellite (TNS-0 #2) concept for the atmospheric radio occultation technology realization was elaborated. It was shown, that in case of using solar panels in the onboard power supply subsystem and specialized antennas for GNSS signals receiving, the platform TNS-0 is suitable for solving of that scientific issues. The nanosatellites development program with different purposes payload onboard has being realized in JSC «Russian Space Systems» since 2007. Three main tasks have been considered in this program: AIS signals registration from marine vessels in outer space, ionosphere plasma state monitoring and atmospheric GLONASS/GPS radio occultation space-based technology. The objects monitoring system base elements, including nanosatellite with AIS receiver onboard («CosmoAIS»), began to develop in 2010. In addition the problems of perspective AIS satellite segment modeling, ground segment deployment, AIS payload for meteorological and resource low orbit satellites development has been investigated under the umbrella of the research. The other enterprise activity direction is the ionosphere monitoring technologies based on radio tomography method. More than 10 special tomography stations for 150/400 MHZ signals receiving have been deployed in Russian Federation territory at the present time. Thereby, this research presents the successful development examples of the special nanosatellites payloads and technologies in Russia. These devices might become the commercial products in the case of their successful tests in outer space. Taking into account the potential commercialization process of the CubeSat's payloads for the different monitoring and remote sensing space systems the possibility of the international cooperation with relatively reasonable «entry ticket» price for the countries, which are new in space industry, is starting. ©2013 by the International Astronautical Federation. All rights reserved.
Dvorkin V.V.,JSC Russian Space Systems |
Karutin S.N.,JSC Russian Space Systems
Gyroscopy and Navigation | Year: 2013
The requirements for the topology of the global network of tracking stations have been analyzed. The methodology for developing a network has been proposed; experimental research has been conducted to study the potential of the global network to supply GLONASS users with precision navigation and time information. The lines of the development of GLONASS measuring technologies are considered. © 2013 Pleiades Publishing, Ltd.
Romanov A.,JSC Russian Space Systems |
Novikov A.,JSC Russian Space Systems
61st International Astronautical Congress 2010, IAC 2010 | Year: 2010
A new theoretical method for determining the absolute total electron content (TEC) from phase differences of unmodulated coherent multifrequency signals is derived. Calculation of the values of the phase ambiguity and resolution in terms of TEC values is presented. A combination of the carrier frequencies of coherent signals that enables determination of the absolute TEC of the Earth's ionosphere with the use of simple receiving facilities is substantiated. This method makes it possible to measure TEC along a trace of sounding multifrequncy radio signal using only instantaneous phase data. Copyright ©2010 by JSC "Russian Space Systems". Published by the IAF.
Gektin U.M.,JSC Russian Space Systems |
Egoshkin N.A.,Ryazan State Radio Engineering University |
Eremeev V.V.,Ryazan State Radio Engineering University |
Kuznetcov A.E.,Ryazan State Radio Engineering University |
Kochergin A.M.,Ryazan State Radio Engineering University
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives | Year: 2016
Technology of prelaunch geometric calibration of multispectral imagery instruments of Russian geostationary satellites "Elektro-L" No.1 and No.2 is considered. Circular control points are used as a test field. Its geometrical model is developed to take distortions in the collimator optical system into account. Multiple observations of a test field at different angles is used to cover the full visual field of a geostationary sensor. New algorithm of circular control point detection is developed and adapted to complex geometry of geostationary imagery. It is capable of processing images formed as a set of separate scans. Under calibration, sensor design parameters and also the law of scanning mirror motion are specified. The paper contains results of the technology approval under prelaunch calibration of MSU-GS sensors for geostationary operational meteorological satellites (GOMS) "Elektro-L" No.1 and No.2.
Klionovski K.,JSC Russian Space Systems
IEEE Transactions on Antennas and Propagation | Year: 2013
Round semitransparent ground plane was studied for the purpose of optimizing radiation pattern and down-up (DU) ratio of a patch antenna. This paper describes a three-dimensional diffraction of an extraneous source as a ring of magnetic current with a standing wave relative to the azimuthal coordinate on a semitransparent disk. An algorithm is given to determine the unknown electric current of the ground plane by solving the integral equation. Construction of experimental layout and method of definition of average impedance for this construction are presented. The calculated and measured radiation patterns and the DU ratio of the patch antenna with a semitransparent ground plane are compared with the conductive ground plane of the same size. The impact of the phase distribution of impedance on the DU ratio is investigated. © 2013 IEEE.
Bulgakov N.N.,JSC Russian Space Systems |
Alybin V.G.,JSC Russian Space Systems |
Krivoshein A.A.,JSC Russian Space Systems
CriMiCo 2014 - 2014 24th International Crimean Conference Microwave and Telecommunication Technology, Conference Proceedings | Year: 2014
Principle of design and initial data for design of a command-measuring system (CMS), intended to control the low-orbit spacecraft (SC) and SC, designed to operate on the geostationary orbit at the stage of their output to the state security service are considered. With two control loops, as contained in CMS - between the ground station of CMS and SC and between the CMS, satellite-relay and SC, allows providing control of SC throughout its orbit flight. The problem questions of creation of CMS onboard equipment and ways of their solution are discussed. © 2014 CriMiCo'2014 Organizing Committee, CrSTC.
Andrey K.,JSC Russian Space Systems |
Mikhail K.,JSC Russian Space Systems |
Svetlana P.,JSC Russian Space Systems
Proceedings of IEEE East-West Design and Test Symposium, EWDTS 2013 | Year: 2013
This article is devoted to the problems of conducting life tests of electronic components and to the ways of solving these problems. The need for research in the field of accelerated life tests is shown. A physics-of-failure approach to life tests with accent on parametric failures (due to aging) is considered. © 2013 IEEE.
Oleg M.,JSC Russian Space Systems |
Alexander O.,JSC Russian Space Systems |
Alexander S.,JSC Russian Space Systems
Proceedings of IEEE East-West Design and Test Symposium, EWDTS 2013 | Year: 2013
Electronic equipment reliability depends on reliability of used electronic components. Therefore it's important to detect unreliable components during incoming inspection. This article shows results of research on efficiency of testing performed in Russian test houses. In the end some suggestions for improving testing quality are made. © 2013 IEEE.