Brief introduction

In 2002 in Kharkov a non-commercial research group (symbolically called «R&D GNSSgroup») which purpose is creation and development of domestic GNSS technologies of navigation and high precision positioning was created. The main direction of the development – creation of new effective methods, mathematical support and the software of static and kinematic/stop&go dual-frequency and single-frequency positioning of centimeter accuracy with use of GNSS permanent reference stations network and the centralized organization of gathering and joint processing of stations and user observations.

The group started working within the framework of the subject of the department of space geodynamics of the Main Astronomical Observatory of NAN of Ukraine (MAO NASU) under the leadership of the Academician Ya. Yatskiv. Since September 2004 the specialists of the group have been the staff of the Kharkov National University of Radio Electronics (KhNURE) and since 2008 they have made a part of the scientific and research laboratory "Satellite network technologies of high-precision positioning" (SRL «SNTPP») of the Scientific-Educational Centre (SEC) of the sub-department “Fundamentals of Radio Engineering” of KhNURE. At that time there is continuous scientific and technical cooperation with MAO NAS of Ukraine. Owing to this cooperation since 2008-2010 there has been carried out a number of important joint developments and researches. The main results of these developments are presented on the given site in the section «Projects» and on the site of the National Academy of Sciences of Ukraine.

The experience saved up in the specified period and the expansion of the structure of the group allowed achieving in 2011-2012 the most important scientific results, in particular, in the solution of the tasks of determination of conditions and algorithms of reliable carrier-phase ambiguity resolution of dual-frequency and single-frequency GNSS observations, estimation and more precise accounting of the ionosphere variations and troposphere errors of observations, creation of a new network technology of centimeter accuracy positioning by single-frequency observations in the sparse networks of reference stations on basic lines of ~100 km, etc.

Our team is interested in creative interaction with the potential partners and the organizations-investors as to the implementation of practical projects on the creation and implementation of domestic industrial samples of software means of GNSS observation centralized processing in the tasks of high precision positioning.

Publications

The staff of the scientific and research laboratory have published about 100 proceedings including papers and theses of the conferences, have performed more than 10 research projects in the area of high precision positioning and navigation using GNSS signals. You may get acquainted with the proceedings of the staff of the group in the section «Publications».

Cooperation

During all the period of the activity the group carries out the cooperation with the following organizations:

Group members

Zhalilo_A

Alexey A. Zhalilo,

Candidate of Technical Sciences (Ph.D. compliance), Senior Research Scientist (academic rank), Leading Research Scientist (position) of the Scientific-Educational Center (SEC) of sub-department “Fundamentals of Radio Engineering” of KhNURE, founder and scientific supervisor of the group (the laboratory of satellite network technologies of high precision positioning).

Experience in the area of GNSS of technologies – since 1985. He graduated from the radio engineering faculty of the Kharkov Aviation Institute (KhAI) in 1978, in 1984 he defended the Candidate's dissertation (Degree Level). The area of scientific activity - satellite network technologies and systems of coordinate and time determination, methods and algorithms of GNSS observation processing (pre-processing, quality control, carrier-phase slips repair and carrier-phase ambiguity resolution, estimation of zonal/areal corrections, navigation and high-precision positioning).

Zhelanov_A

Alexey A. Zhelanov,

Candidate of Technical Sciences (Ph.D. compliance), Senior Research Scientist (position) of the Scientific-Educational Center (SEC) of sub-department “Fundamentals of Radio Engineering” of KhNURE, head of the laboratory of satellite network technologies of high precision positioning.

Experience in the area of GNSS of technologies – since 2006. He graduated from Radio Engineering faculty of the Kharkov National University of Radio Electronics (KhNURE) in 2007, in 2011 he defended the Candidate's dissertation (Degree Level). The area of scientific activity - satellite network technologies and positioning-timing systems development, methods and algorithms of GNSS observation processing (navigation and high precision positioning), technologies and systems of data transmission (wire and wireless).

Bessonov_E

Evgeniy A. Bessonov,

Post-graduate student of the sub-department “Fundamentals of Radio Engineering” of KhNURE, since 2008 – in the staff of the group, in 2011 he graduated from the Kharkov National University of Radio Electronics (KhNURE), speciality – «Radio Engineering ». The scope of scientific and research works – estimation and modeling of the ionosphere and troposphere delays in the tasks of high-precision positioning on the basis of using carrier-phase observations of GNSS reference station networks.

Ditskiy_I

Igor V. Ditskiy,

Post-graduate student of the sub-department “Fundamentals of Radio Engineering” of KhNURE, since 2008 – in the staff of the group, in 2011 he graduated from the Kharkov National University of Radio Electronics (KhNURE), speciality – «Radio Engineering ». The scope of scientific and research works – detection, estimation and repair of GNSS observations carrier-phase slips, carrier-phase ambiguity resolution in the tasks of high-precision positioning.


Earlier a significant contribution in the developments of the group was made by our former colleagues:

Natalya V. Sadanova, engineer-programmer, in the period of 2002-2006 she developed a preliminary version of «SDK OCTAVA_PPA» software (pre-processing and analysis);

Dmitry A. Shelkovenkov, Candidate of Technical Sciences (Ph.D. compliance), Senior Research Scientist (academic rank); in the period of 2005-2011 he performed a number of researches in the tasks of pre-processing and analysis of observations quality, carrier-phase slips repair, use of code-carrier smoothed observations in the tasks of high-precision positioning, defended the Candidate's dissertation (Degree Level) in 2009, developed and tested two versions of «SDK OCTAVA_PPA» software.