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Romanov A.A.,JSC Russian Space Systems | Makarov Yu.N.,Roscosmos
Proceedings of the International Astronautical Congress, IAC

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. Source

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

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. Source

Kozlov D.V.,Russian Academy of Sciences | Semenov V.L.,JSC Russian Space Systems
Instruments and Experimental Techniques

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. Source

Anashin V.S.,Branch of JSC united Rocket and Space Corporation | Chubunov P.A.,National Research Nuclear University MEPhI | Protopopov G.A.,Branch of JSC united Rocket and Space Corporation | Iakovlev S.A.,Branch of JSC united Rocket and Space Corporation | And 7 more authors.
Proceedings of the European Conference on Radiation and its Effects on Components and Systems, RADECS

6T SRAM bitcells for high density 64MB SRAM has been designed. Test chip with memory arrays based on these bitcells was manufactured and characterized for radiation effects. The device is SEL immune, has an error rate less than 4E-18 errors/bit•day. © 2015 IEEE. Source

Urlichich Y.,Joint Stock Company JSC Russian Space Systems | Subbotin V.,JSC Russian Space Systems | Stupak G.,JSC Russian Space Systems | Dvorkin V.,JSC Russian Space Systems | And 3 more authors.
GPS World

The GLONASS-K satellite has inaugurated a new era of radio-navigation signals for both the Russian system and for international GNSS interoperability. The 2014 GLONASS-K2 satellite will have an FDMA signal in the L1 and L2 bands and CDMA signals in L1, L2, and L3. In spite of the unsuccessful launch of three satellites at the end of 2010, currently GLONASS is fully deployed again with 23 satellites set healthy to the user, and more in orbiting reserve. GLONASS coherent FDMA and CDMA navigation signal sets should satisfy a wide range of user requirements, from ordinary navigation to high-precision applications. SDCM development is now entering its deployment and completion phase. The network of reference stations is almost completely established. GLONASS system replenishment has almost finished, and the system enters a new historical phase. Further SDCM development is predicated upon the launch of two Luch satellites, in the first half of 2012 and in 2013, respectively. Source

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