Construction and Transport Engineering

Global navigation satellite systems

Application of Global navigation satellite systems in different sectors of the economy, including all types of transport, surveying, geodynamics, seismology, monitoring of buildings and structures, etc. Establishment and maintenance of GNSS reference networks, calculation analysis of coordinates, planning and and execution of GNSS measurements in the field, development and approbation of methodology for equipment testing.

Ingus Mitrofanovs
(ingus.mitrofanovs@lu.lv; https://www.lu.lv/en/ggi)

Global navigation satellite systems - geodetic measurement capabilities

High-precision measurements by augmenting GNSS equipment with motion sensors, magnetism sensors, etc., as well as using information from fixed base stations.

Jānis Zvirgzds
(janis.zvirgzds2@lu.lv; https://www.lu.lv/en/ggi)

Analysis of human behaviour in urban public open spaces using image analysis and geosimulation

Behavioural analysis and modelling of moving objects using STATBOX technology. This advanced technology records, classifies, and analyzes information in video files, allowing for the identification and tracking of moving objects based on their behavior in space and time, thus performing a comprehensive statistical data processing cycle, enabling geosimulation of real-life scenarios.

Satellite geodesy

GNSS (Global Navigation Satellite Systems) data processing and time series analysis.

Post-processing of GNSS data with Bernese GNSS Software

Processing of stand-alone GNSS base station data as well as static (>2h) measurement data with Bernese GNSS Software. The resulting GNSS coordinates are calculated and transformed as necessary. This software offers the capability for additional data analysis, such as studying the effects of ionospheric conditions on GNSS data.

Vertical deflection measurements with VESTA digital zenith camera, data processing

Measurement planning, vertical tilt measurements with VESTA digital zenith camera, data processing using  ZT control software. Additional meteorological data may be collected during the measurement session, e.g. by flying a drone (with installed meteorological sensor) to study the effect of anomalous refraction on the vertical deflection measurements.

Time series analysis

Time series analysis of GNSS coordinatess and vertical deflection measurement results - trend, seasonality, noise characteristics, signal processing over time and frequency range.

Data analysis and visualisation with Python

Conversion of various geodetic measurement file formats, statistical analysis, data visualisation for presentation materials.

Design of astrogeodetic instruments and control & data processing software for them

Development of instrumentation design; configuration of included electronic and optical component, development of control & data processing software.

Physical geodesy

Determination of the Earth's gravity field, quasi-geoid modelling, determination of normal heights.

Katerīna Morozova
(katerina.morozova@lu.lv; https://www.lu.lv/en/ggi)