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SCIENTIFIC CENTER OF APPLIED ELECTRODYNAMICS Areas of Activities: UHF Antennas and Equipment UWB Digital Signal Processing Adaptive Systems Electromagnetic.

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Presentation on theme: "SCIENTIFIC CENTER OF APPLIED ELECTRODYNAMICS Areas of Activities: UHF Antennas and Equipment UWB Digital Signal Processing Adaptive Systems Electromagnetic."— Presentation transcript:

1 SCIENTIFIC CENTER OF APPLIED ELECTRODYNAMICS Areas of Activities: UHF Antennas and Equipment UWB Digital Signal Processing Adaptive Systems Electromagnetic Compatibility , Russian Federation, Saint-Petersburg, Rizhskiy prospect 28 Phone: +7 (812) , Fax: +7 (812)

2 SCIENTIFIC CENTER OF APPLIED ELECTRODYNAMICS UHF Antennas and Equipment Design and manufacture of measuring complexes with decimeter, centimeter, millimeter and micrometer range antennas. Creating of land, sea, air and space based antennas. Reflector antennas, phased arrays and deployed antennas.

3 SCIENTIFIC CENTER OF APPLIED ELECTRODYNAMICS UHF Antennas and Equipment UHF complex for detecting direction to RF signal sources. 8 sectors give a high accuracy detection. Features Operating range 100MHz – 1GHz Bearing accuracy 1,5-2 degrees Solutions Small size diameter 64cm height 32cm Low noise level less -130dBm

4 SCIENTIFIC CENTER OF APPLIED ELECTRODYNAMICS UHF Antennas and Equipment UHF complex with Phased antenna. Narrow diagram allow a high accuracy detection of a source. Features Operating range L,S-Band Beamwidth in the azimuth plane 3 degrees in the plane of elevation 20 degrees Solutions Composite phased array Azimuthal supporting-turning device with the elimination of backslash

5 SCIENTIFIC CENTER OF APPLIED ELECTRODYNAMICS UHF Antennas and Equipment We conduct a set of measures of antenna parameters: Electrodynamic modeling of large antenna systems Model of the stress-strain state of the construction Simulation of temperature fields the thermal deformations A complete analysis of the geodesic geometry of the component parts of antennas

6 SCIENTIFIC CENTER OF APPLIED ELECTRODYNAMICS Adaptive systems Millimetron (realized) – orbital radio-telescope with adaptive main mirror. 96 slices, controlled by close-loop NI controller and moved by nano- positioners (Attocube Systems,Munich), working at cryo- temperatures, will give a perfect resolution in cosmic conditions.

7 SCIENTIFIC CENTER OF APPLIED ELECTRODYNAMICS Adaptive systems Creating a system of measurement of deformations and adaptive reflective surface for the telescope of millimeter waveband with a mirror diameter of 70m RT-70, which is a part of building observatory at Suffa plateau (Uzbekistan). The observatory at Suffa plateau, model and construction activity

8 SCIENTIFIC CENTER OF APPLIED ELECTRODYNAMICS Adaptive systems Main design and operation characteristics of prototype and RT-70 Prototype RT-70 Installation typeazimuthal-elevation Mirror systemGregory system Primary mirror diameter 70m Counter reflector diameter 7m 3m Rotation angles: by azimuth by elevation ± 270 from 4 30 to Speed of rotation: by azimuth by elevation from 2,5/s to 30/s from 2,5/s to 15/s Sea level height 02500m Seismicity -8 point

9 SCIENTIFIC CENTER OF APPLIED ELECTRODYNAMICS Adaptive systems Prototype RT-70 Operation wind velocity for millimeter waveband to 18m/s to 10m/s to 2m/s Waveband(5…8)cm dm (1…4)mm (0,8…3)cm m Antenna pattern width 2,5 3 Programmable coordinates acquisition error at wind velocities more 10m/s to 10m/s to 2m/s ,5 Root-mean-square error of reflecting surface from theoretical profile primary mirror counter reflector 0,8mm 0,4mm 0,07mm 0,1mm Main design and operation characteristics of prototype and RT-70

10 SCIENTIFIC CENTER OF APPLIED ELECTRODYNAMICS Adaptive systems Main measuring tasks RT-70

11 SCIENTIFIC CENTER OF APPLIED ELECTRODYNAMICS Adaptive systems Adaptive surface of the main mirror, consisting of 1188 adjustable shields Actuator experimental model. Positioning accuracy - 0,005mm

12 SCIENTIFIC CENTER OF APPLIED ELECTRODYNAMICS UWB Digital Signal Processing UWB Radio astronomy on Ratan-600 complex (realized). Up to 2 GHz bandwidth signals. Real-time processing system on base of ADQ108 PXIe unit with Xilinx 6 LX240T FPGA. Up to 6,4 Gs/s streaming 8-bit resolution 1Gb onboard memory 2 GHz analog bandwidth PXIe x4 512K frequency channels in real-time

13 SCIENTIFIC CENTER OF APPLIED ELECTRODYNAMICS Electromagnetic Compatibility

14 SCIENTIFIC CENTER OF APPLIED ELECTRODYNAMICS Electrodynamics modeling

15 SCIENTIFIC CENTER OF APPLIED ELECTRODYNAMICS Electrodynamics modeling PROGRAM COMPLEXES FOR CALCULATION OF AREAS OF ANTENNA'S RADIATION AND DISPERSION ON THE OBJECTS OF COMPLEX GEOMETRICAL SHAPE VOLNA and ALEKS Complex capacities: Program complex for calculating parameters and characteristic of antennas and objects of complex geometrical shape, represented in the form of wire structures, considering multi-layer dielectric structures of underlying terrain. Peculiarities of the program: accounting of a passive network structure variation of geometrical and electrodynamic parameters of antenna models

16 SCIENTIFIC CENTER OF APPLIED ELECTRODYNAMICS Electrodynamics modeling PROGRAM COMPLEX FOR LARGE DEPLOYMENT REFLECTOR MODELING Program complex allows to make calculations of basic characteristics of large deployment reflectors taking into account reflector-type parasitics surface deviations. Practically all factors are taken into account: geometric distortion and deviation of reflector-type parasitic surface; instrumental errors of support installation; "matrix" effect; thermal distortion caused by uneven heating of reflector. Program complex allows to optimize reflector's surface according to different criteria, improving characteristics of antenna system by doing this. Return files on calculations of reflector's surface are compatible with AutoCAD и 3DSmax formats. Field in the focal plane RT-70 The spatial pattern of the antenna under the influence of interference

17 SCIENTIFIC CENTER OF APPLIED ELECTRODYNAMICS Electrodynamics modeling PROGRAM COMPLEX FOR CALCULATION OF ELECTROMAGNETIC COMPATIBILITY OF RADIOELECTRONIC EQUIPMENTS ON THE DIFFERENT OBJECTS TAKING INTO CONSIDERATION CHARACTERISTICS OF RECEIVING AND TRANSMITTING DEVICES Vessel and its model


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