Siberian State Academy of Geodesy

Novosibirsk, Russia

Siberian State Academy of Geodesy

Novosibirsk, Russia
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Karpik A.P.,Siberian State Academy of Geodesy | Lipatnikov L.A.,Siberian State Academy of Geodesy
Gyroscopy and Navigation | Year: 2015

An approach aimed at providing compatibility and complementarity of real time kinematic (RTK) and precise point positioning (PPP), the well-known methods for high-precision positioning of mobile objects, using low-cost GLONASS/GPS equipment is proposed. Introduction of advanced modifications of these methods does not involve any changes in the existing ground infrastructure. © 2015, Pleiades Publishing, Ltd.


Pacheco-Pena V.,Public University of Navarra | Beruete M.,Public University of Navarra | Minin I.V.,Siberian State Academy of Geodesy | Minin O.V.,Siberian State Academy of Geodesy
Applied Physics Letters | Year: 2014

The capability of generating terajets using three-dimensional (3D) dielectric cuboids working at terahertz (THZ) frequencies (as analogues of nanojets in the infrared band) is introduced and studied numerically. The focusing performance of the terajets is evaluated in terms of the transversal full width at half maximum (FWHM) along x- and y-directions using different refractive indices for a 3D dielectric cuboid with a fixed geometry, obtaining a quasi-symmetric terajet with a subwavelength resolution of ∼0. 46λ0 when the refractive index is n = 1.41. Moreover, the backscattering enhancement produced when metal particles are introduced in the terajet region is demonstrated for a 3D dielectric cuboid and compared with its two-dimensional (2D) counterpart. The results of the jet generated for the 3D case are experimentally validated at sub-THZ waves, demonstrating the ability to produce terajets using 3D cuboids. © 2014 AIP Publishing LLC.


Minin I.V.,Siberian State Academy of Geodesy | Minin O.V.,Siberian State Academy of Geodesy
2014 12th International Conference on Actual Problems of Electronic Instrument Engineering, APEIE 2014 - Proceedings | Year: 2014

The innovative radiating structures as a conical millimeter wave FZP lens are proposed for subwave-length focusing at different wavelength. The results of experimental verification are discussed. It has been shown that in contrast to the flat diffractive optics the curvilinear 3D diffractive conical optics allows for over-coming 3D Abbe barrier at the bandwidth at least of ±20% with focal distance F more than F>40γ. The focal intensity distribution for such type of lenses is not circularly symmetric and thus the focal spot in the high numerical aperture case is no longer an Airy pattern. These results may find useful applications in optical microscopes, including 'reverse-microscope', nondestructive testing, microoptics, and nanooptics. © 2014 IEEE.


Pacheco-Pena V.,Public University of Navarra | Beruete M.,Public University of Navarra | Minin I.V.,Siberian State Academy of Geodesy | Minin O.V.,Siberian State Academy of Geodesy
Optics Letters | Year: 2015

In the past, it has been demonstrated that it is possible to produce terajets with high resolution at its focus using 3D dielectric cuboids under plane-wave illumination. Here, a systematic study of the harmonic and angular response of terajets using cuboids is performed. Mutifrequency focusing is demonstrated at the fundamental frequency and two higher frequency harmonics showing an intensity enhancement of ∼10, ∼18, and ∼14 for each case. This capability to use 3D dielectric cuboids to produce terajets at the fundamental frequency and first harmonic is experimentally evaluated at sub-THz frequencies, with good agreement with numerical results. Moreover, a robust angular response is demonstrated numerically and experimentally showing that the intensity at the focal position is maintained in a wide angular range (from 0° to 45°), demonstrating the capability to work as a wide scanning terajet-focusing lens. The results here presented may be scaled at different frequency bands such as optical frequencies and may be used in microscopy techniques and sensors. © 2015 Optical Society of America.


Musikhin I.A.,Siberian State Academy of Geodesy
Geo-Spatial Information Science | Year: 2014

In today’s world, higher education, especially in technical sciences, is crucial when speaking about a change in values and attitudes towards sustainability. Engaging students in learning and training process as well as developing their research skills and creative capacity is challenging. This study inquiries into the current academic activities and role of used educational technologies and methodologies for encouraging active learning in both undergraduate and postgraduate programs when teaching any engineering course in general, and geospatial sciences in particular. The result of the study suggests the importance of interdisciplinary project and problem-based learning, building partnership with universities, students and industrial companies, monitoring, developing, and implementation of new educational technologies. © 2014, © 2014 Wuhan University.


Minin I.,Siberian State Academy of Geodesy | Minin O.,Siberian State Academy of Geodesy
Chinese Optics Letters | Year: 2014

The innovative radiating structures as a conical millimeter wave FZP lens are proposed for subwavelength focusing. The results of FDTD simulation and experimental verification are discussed. It has been shown that in contrast to the flat diffractive optics the curvilinear 3D diffractive conical optics is capable of overcoming 3D Abbe barrier with a focal distance F greater than 2λ. The focal intensity distribution for such type of lenses is not circularly symmetric and thus the focal spot in the high numerical aperture case is no longer an Airy pattern. These results may find useful applications in optical microscopes, including "reverse-microscope", nondestructive testing, microoptics, and nanooptics. © 2014 Chinese Optics Letters.


Minin I.V.,Siberian State Academy of Geodesy | Minin O.V.,Siberian State Academy of Geodesy
International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz | Year: 2014

It has been experimentally shown that in the near field of single diffractive lens with subwavelength focal distance F≤λ without of the immersion medium a resolution of 0.3-0.4λ were obtained. The 'Abbe barrier' can be completely broken by such diffractive lenses with unique 3D super resolution. Also it was experimentally shown the focal spot in the high numerical aperture diffractive lenses is no longer an Airy pattern and focal intensity distribution is not circularly symmetric. © 2014 IEEE.


Minin I.V.,Siberian State Academy of Geodesy | Minin O.V.,Siberian State Academy of Geodesy
International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz | Year: 2014

The design of dielectric wedge-scanned millimeter wave lens antennas with measured results is presented. The diffractive lens antenna (DLA) is treated; it incorporates a lens that transforms the radiation pattern of a scalar feedhorn. A schematic diagram of a zoned dielectric wedge-scanned DLA with Fresnel spherical surface is presented. An efficient device for scanning the beam produced by a DLA is a zoned dielectric wedge. A pair of wedge produces an arbitrary scan pattern out to some maximum displacement from antenna boresight. It has been shown the scanned diffractive 3D antenna-radome allow to wide scan at least of 25 degree with no losses in gain. © 2014 IEEE.


Minin I.V.,Siberian State Academy of Geodesy | Minin O.V.,Siberian State Academy of Geodesy
International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz | Year: 2014

The 'Abbe barrier' may be completely broken by curvilinear (conical) 3D diffractive lenses with unique 3D super resolution (∼0.4λ0 and ∼0.8λ0 for transverse and axial respectively), but in contrast to the flat diffractive optic the curvilinear 3D diffractive conical optic allow to overcome 3D Abbe barrier with focal distance F more than F>2λ. © 2014 IEEE.


Vladimirova S.V.,Siberian State Academy of Geodesy
2010 10th International Conference on Actual Problems of Electronic Instrument Engineering Proceedings, APEIE - 2010 | Year: 2010

In the report on a uniform methodological basis, the questions of a continuity of peak parameters of a MICROWAVE of measures are considered at their certification. © 2010 IEEE.

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