Jānis Kaminskis

Jānis Kaminskis
Riga Technical University | RTU · Faculty of Civil Engineering

Doctor of Engineering

About

130
Publications
16,670
Reads
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278
Citations
Citations since 2016
47 Research Items
161 Citations
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201620172018201920202021202205101520253035
201620172018201920202021202205101520253035
201620172018201920202021202205101520253035
Introduction
Jānis Kaminskis currently does research at the Geomatics department (http://geomatika.rtu.lv/), RTU (https://www.rtu.lv/en) and at the Institute of Geodesy and Geoinformatics (GGI; https://www.lu.lv/ggi/ ), University of Latvia. Jānis Kaminskis works in Higher Education, Civil Engineering and Geodesy and Surveying at the Geomatics department, Riga Technical University. Their current project is "High accuracy gravity field model for Latvia including its sea territory".
Additional affiliations
July 2014 - April 2016
University of Latvia
Position
  • Visiting Researcher
Description
  • http://www.ggl.baug.ethz.ch/about
July 2014 - August 2015
University of Latvia
Position
  • Visiting Researcher
July 2014 - August 2015
University of Latvia
Position
  • Visiting Researcher

Publications

Publications (130)
Presentation
Full-text available
Marine/Maritime Cadastre as a Multipurpose, Multidimensional, 3-Rs Driven and Use-Oriented. Two oceans and four seas: the Atlantic and Arctic Oceans, the Baltic Sea, the North Sea, the Mediterranean Sea, and the Black Sea make up Europe’s coastline of approximately 70 000 kilometres. Focus of the research looking at the development of the marine/m...
Conference Paper
Full-text available
Most countries throughout the world directly border on seas and oceans, which implicitly imposes on them new responsibilities and specific tasks. In this respect, among internationally accepted solutions that have put views and ideas into practice stands the United Nations Convention on the Law of the Sea (UNCLOS). In our case, we compare policies...
Article
Full-text available
Throughout the centuries, Riga has been the city with dynamic development. Its territory has unceasingly expanded, whereby previously unused territories have been urbanized. Managers of the city understood already at the end of 19th century that unified geodetic network had great importance in the development of the city. Since then, Riga’s local g...
Conference Paper
Full-text available
On Latvia becoming an associate member of the IUGG in 2019 at the 27th Congress in Montreal, Canada. Initial attempts to join IUGG and IAG took place in 1998 in the State Land Service, then failed. And only the year 2019 gave results. Membership in a global scientific non-governmental organization opens up many opportunities for international coope...
Article
Tide gauge observations provide sea level relative to the Earth’s crust, while satellite altimetry measures sea level variations relative to the centre of the Earth’s mass. Local vertical land motion can be a significant contribution to the measured sea level change.Satellite altimetry was traditionally used to study the open ocean, but this techno...
Presentation
Full-text available
In our country, the issues of geodesy are solved not only in the capital, but also in Jelgava, Ventspils and other educational centers. We follow the development of the industry and each contributes professionally. In order to have stable digital world we stand for stable education and geodetic reference system, incl. geoid and for open data policy...
Chapter
Full-text available
Maritime/Marine Spatial Planning (MSP) underpinned by an ecosystem-based approach as one of the core components of integrated marine management is gaining momentum. In turn, a fully-fledged marine cadastre as an integral part of the MSP is still a future vision. The aim of the paper is to explore the Multipurpose, Multidimensional and Interest-Driv...
Conference Paper
Full-text available
The basic aim is to contribute to the world geodetic space in line with today’s scientific achievements. Riga geodynamic site is a thankful place for this, as it has long-term SLR observations and the longest GNSS records in Latvia. The goal is establishment of regional long-term geodetic monitoring station at LU Institute of Astronomy, Riga, Kanda...
Article
Full-text available
In 2017 and 2018 GFZ performed two gravimetry campaigns on commercial ferries in the Baltic Sea. The nature of such “non-dedicated” campaigns is different from “dedicated” campaigns that are performed on research vessels with tracks planned according to gravity measurement needs. The non-dedicated campaigns use non-survey vessels or survey vessels...
Presentation
Full-text available
About 3D technologies, BIM , GIS. VR technologies. History , GIS tools, databases. Dedicated to the International GIS Day and related technical news.
Presentation
Full-text available
Struve Geodetic Arc as geodetic benchmarks as at least one of crucial infrastructure elements for precise geodesy we do recognize in our region/ Baltic since 19 th century. We are still practically using some them for current geodetic reference network after 200 years OR since 1816. As well as we know Celsius stone in Sweden ( in 1731 first mark ma...
Article
Full-text available
This research presents a quasi-geoid model for the Western part of Latvia based on parametric modelling of continuous polynomial surface by DFHRS (Digital Finite-element Height Reference Surface) software v.4.3 developed by Hochschule Karlsruhe-University of Applied Sciences. Apart from standard observations for quasi-geoid determination-GNSS/level...
Conference Paper
In the 2018 a new relative gravimeter SCINTREX CG-6 was acquired by UL. This abstract presents the software development under Visual Studio 2012 environment using C++ programming language providing GUI (Graphical User Interface) for gravity data processing and adjustment, and its result evaluation. The results were also compared with GRAVSOFT separ...
Presentation
Full-text available
The only absolute representation of the reality is the reality itself. It means that the scale of a perfect model should be 1:1. In practice however geospatial information of such high resolution is not collected nor is likely to be. The most detailed geospatial information systematically collected since 2012 is high-resolution topographic informat...
Conference Paper
Full-text available
The article describes the method and computation results of Ulaanbaatar region quasi-geoid model, UBQGEOID2018, based on global gravity field model EGM2008, GNSS and levelling points in Baltic Height system 1977 and derived deflections of vertical data. The DFHRS (Digital Finite-element Height Reference Surface) software v.4.4 has been used for thi...
Article
Full-text available
During the last years, the European and the Nordic quasi-geoid models and existing national q-geoid models covered the territory of Latvia. There are many ways for comparison and tests of results achieved. Scientists and professionals can compare models directly at some special geodetic co-location stations or use GNSS/levelling sites. The results...
Poster
Full-text available
In terms of “Development of the high accuracy gravity field model for Latvia including sea territory” project the main task is to compute gravity field and precise quasi-geoid model up to 1 cm accuracy using all available data. In the year of 2016 quasi-geoid model for Eastern part of Latvia has been computed using Karlsruhe University of Applied S...
Presentation
Full-text available
About Struve Geodetic Arc success and inscription on UNESCO world heritage list in 2005 and some future plans or general surveying trends in history.
Presentation
Full-text available
For the last years on the territory of Latvia are available Nordic and other quasi-geoid (q-geoid) models besides existing national q-geoid models, most of them also include marine area. There are few ways for comparison and tests of results achieved so far. We can compare models directly at some selected geodetic co-location stations or use GNSS/l...
Poster
Full-text available
Engineering Research Institute “Ventspils International Radio Astronomy Centre” (VIRAC) of Ventspils University College (VUC) together with Riga Technical University Department of Geomatics in 2018 will consistently strengthening collaboration with other European radio astronomy observatories using very large base interferometry method. Our main in...
Poster
Full-text available
In the era of modern technologies and GNSS developments the precise quasi-geoid (QGeoid) model is necessary as geodetic infrastructure for GNSS services in different engineering needs, as it allows the determination of normal height much faster in comparison to levelling and directly from GNSS. This poster represents the software for QGeoid determi...
Presentation
Full-text available
In the era of modern technologies and GNSS developments the precise quasi-geoid (QGeoid) model is necessary as geodetic infrastructure for GNSS services in different engineering needs, as it allows the determination of normal height much faster in comparison to levelling and directly from GNSS. This presentation represents the software for QGeoid d...
Article
Full-text available
Already after our independence in the nineties of the twentieth century, we used common height system-Baltic Normal height system 1977 (BHS 1977). Latter we have made big job for verification and modernization of our geodetic network in the frames of different international campaigns. There we always cooperating with Nordic countries in frames of N...
Article
Full-text available
In Latvia, the issues of the Real Estate Cadastre are arranged; however, it should be noted that part of the issues affecting the Baltic Sea, i.e., the issues of the Marine Cadastre, are not covered by the Real Estate Cadastre. The status of the Baltic coastline is an essential element of infrastructure for all countries around the Baltic Sea. This...
Presentation
In Latvia, issues of the Real Estate Cadastre have been arranged, however, it has to be noted that there has been an uncovered part of the issues affecting the Baltic Sea, i.e. the issues of the Marine Cadastre. The status of the Baltic coastline is very essential element of infrastructure for all countries around the Baltic Sea. This baseline serv...
Article
Full-text available
Over several years the Institute of Geodesy and Geoinformatics (GGI) was engaged in the design and development of a digital zenith camera. At the moment the camera developments are finished and tests by field measurements are done. In order to check these data and to use them for geoid model determination DFHRS (Digital Finite element Height refere...
Article
Full-text available
Deduction of a regularly spaced gravity anomaly grid from scattered survey data is studied, addressing mainly two aspects: reduction of gravity to anomalies and subsequent interpolation by various methods. The problem is illustrated in a heterogeneous study area and contrasting test areas including mountains, low terrain and a marine area. Provided...
Presentation
Full-text available
About state geodetic network studies in the Baltic using GNSS methods in period 2012 till 2016. Besides GNSS we are using geometric levelling and different available quasi geoid models.
Presentation
Full-text available
Geodetic benchmarks as at least one of crucial infrastructure elements for precise geodesy we do recognize in our region since 19th century with the Struve geodetic arc. We are still practically using them for current geodetic reference network after 200 years or since 1816. Nowadays we have many more accurate geodetic observation facilities availa...
Presentation
Full-text available
There is a long tradition of geoid determination within the Nordic Geodetic Commission (NKG). This cooperation between the Nordic and Baltic countries has so far resulted in the sequence of NKG geoid models NKG1986, NKG1989, NKG1996, NKG2002 and NKG2004. In 2010, the NKG Working Group of Geoid and Height Systems started a new project to develop the...
Conference Paper
Full-text available
Latvijas rietumu daļā Kurzemes pussalā līdz Jūrmalai-Dobelei atrodas aptuveni 93-98 urbumi, kas 800-1900 m dziļumā zem nogulumiežu segas atsedz platformas pamatklintāja iežus. Parasti šie urbumi pamatklintāju atsedz tikai līdz 20 – 30 m, ļoti reti dzīļāk. Ne visu šo urbumu serdes ir saglabātas līdz mūsdienām. Valsts ģeoloģijas fondā (VĢF) ir pieeja...
Article
Full-text available
Coastal area monitoring is a significant task in the national development and environmental protection. Study area of this work is the Baltic Sea Region, particularly focusing on the land cover changes in the coastal area from Cape Kolka to the Latvian-Lithuanian border. The aim of this research is to estimate and illustrate different examples of m...
Conference Paper
Full-text available
There is an urgent necessity for a highly accurate and reliable geoid model to enable prompt determination of normal height with the use of GNSS coordinate determination due to the high precision requirements in geodesy, building and high precision road construction development. Additionally, the Latvian height system is in the process of transitio...
Article
Full-text available
Fricis Blumbahs (Fritz Blumbach) was one of the first Latvians to acquire higher education in astronomy and he made an outstanding contribution to the culture and science of Latvia during his lifetime. He is known as a research assistant of the prominent Russian scientist Dmitri Mendeleev in the development of metric system of measurement in Russia...
Presentation
Full-text available
A previous Nordic Geodetic Commission (NKG) geoid model was computed in 2004. Since then, the amount of gravity and other relevant data within the Nordic-Baltic region has increased considerably, high quality satellite-only Global Geopotential Models have become available and there have been methodological developments in the geoid modelling proces...
Conference Paper
Full-text available
Gravity reference and gravity change in Latvia 1995-2013 Jaakko Mäkinen (1), Janis Kaminskis (2), Ivars Liepins (3), Kalvis Salmins (4), Reinhard Falk (5), David Stizza (6), Juris Zhagars (7) (1) Finnish Geospatial Research Institute (FGI), Masala, Finland (2) Riga Technical University, Riga, Latvia (3) Latvian Geospatial Information Agency (LGIA),...
Article
Full-text available
Research on regional gravity field modelling by digital zenith cameras. Measurements for deflections of vertical (DoV).
Poster
Full-text available
During the last five year period Institute of Geodesy and Geoinformatics (GGI) has been developing original and advanced astrometric instruments: a digital zenith camera and a new Alt-Alt mount construction multi-purpose optical tracing system (twin-optics SLR). GGI and Institute of Physics of the University of Latvia during 2014-2015 are engaged i...
Conference Paper
Full-text available
Par Latvijas jaunaka kvazigeoida modela LV14 petijumiem, atbilstiba ar citu valstu un globaliem modeliem, par specifiskam atskiribam, kas sasniedz pusmetru.
Article
Full-text available
The paper deals with a research in the area of automation of positional star observations. In order to fully employ recent progress in imaging technologies, star image recognition and reference star identification process should gain comparable level of automation. A software package for this purpose has been developed in the Institute of Geodesy o...
Conference Paper
Full-text available
New quasi-geoid model LV14 has been offered for use by Latvian Geospatial Information Agency, but there exist many differences for more than 45 cm in the new offer in comparison to different existing neighbor models from Lithuania, Estonia or Sweden. Also there is not model offered on the gulf of Riga, and it facing difficulties for application to...
Article
Full-text available
Fricis Blumbahs (Fritz Blumbach) is one of the first Latvians who have acquired higher education in astronomy and has made an outstanding contribution to the culture and science of Latvia during his lifetime. He is known as a research assistant of the prominent Russian scientist Dmitri Mendeleyev.
Conference Paper
Full-text available
Development of a digital zenith telescope prototype, improved zenith camera construction and analysis of experimental vertical deflection measurements for the improvement of the Latvian geoid model has been performed at the Institute of Geodesy and Geoinformatics (GGI), University of Latvia. GOCE satellite data was used to compute geoid model for t...
Conference Paper
Full-text available
Continuing digital zenith camera project, a prototype camera has been built and an extensive test research carried out, looking for solutions and design elements which might present problems and should be improved [1]. In general, camera properties were found close to expected. The most problematic aspect of prototype camera was mechanical stabilit...
Technical Report
Full-text available
Almanac / technical report is compiled and printed by the Association of Estonian Surveyors. It is published in the honor of Struve, who was elected as a Surveyor of the Year 2014 and for the celebration the day of European Surveyors on the CLGE General Assembly.
Conference Paper
Full-text available
Development of a digital zenith telescope optical system and telescope prototype and analysis of experimental vertical deflection measurements for applications in Latvian geodetic network has been performed at the Institute of Geodesy and Geoinformation (GGI), University of Latvia. An original optical system for a digital zenith telescope was compu...
Conference Paper
Full-text available
Latvijas Universitātes 72. zinātniskās konferences Astronomijas un ģeodēzijas sekcija ziņojums par Provizoriskie absolūto gravimetrisko mērījumu rezultāti Latvijā 2013 - Šodienas skatpunkts ( Provisional results of absolute gravity measurements in Latvia 2013 ) - status report.
Book
Full-text available
The textbook for engineering students (in latvian). Grāmatas ievadu skt. 2001.g. rakstā "Globālās pozicionēšanas sistēmas (GPS) pamatprincipi". (Nopeerkama RTU kioskaa Kalkju ie. 1)
Conference Paper
Full-text available
Geomatics Rural Information Society Initiative PLUS in Latvia for development of rural area = GRISI+, education, keep it local and more cooperation Geomatics and different best practices examples.
Chapter
Full-text available
About work of the secretary of astronomer Johannes Hevelius Georgius Kruger in Courland from 1679 untill 1707.
Article
Full-text available
The Struve Geodetic Arc was developed in Years 1816 to 1855, 200 years ago. Historic information on the points of the Struve Geodetic Arc are included in the UNESCO World Heritage list in 2005. Nevertheless, the sites of many points are still not identified nor included in the data bases nowadays. Originally STRUVE arc consisted of 258 main triangl...