GIS-E5050 - Advanced Geodesy D, 02.03.2021-13.04.2021
Kurssiasetusten perusteella kurssi on päättynyt 13.04.2021 Etsi kursseja: GIS-E5050
Contents of the lectures
VLBI
Content |
Learning Objectives |
|
VLBI principles |
VLBI principles. Geophysical Modeling in Geodetic VLBI Analysis.
|
Learn fundamentals of VLBI technique. Understanding geophysical phenomena that can be observed with VLBI. Practice with VLBI analysis software and analyze your first VLBI session.
|
Corrections needed in the measurements |
Radiofrequency signal propagation in space and Earth’s atmosphere, what delays it and how are these delays corrected for. Solid Earth and Ocean Tides, and other factors corrected routinely in geodetic measurements. |
To understand the delays in signal propagation To identify the basic corrections needed |
VLBI experiment |
VLBI experiment. Introduction to VLBI Global Observing System (VGOS). |
To became familiar with the VLBI equipment and how the observations are arranged. Understanding of the VLBI Global Observing System (VGOS) features |
GNSS
Topic |
Content |
Learning Objectives |
From meter to sub-centimeter |
Standard vs. Precise Various positioning methods: point positioning (SPP, PPP) differential positioning (DGNSS) relative positioning (static, kinematic) |
To distinguish between different positioning modes To choose the suitable positioning technique |
Network-based and real-time positioning |
Real Time Kinematic (RTK) Network RTK Precise Point Positioning (PPP)
|
To explain the principle of network-based real-time kinematic positioning To distinguish between various network based implementations |
GNSS precise positioning in the real-world |
Applications, strengths vs. weaknesses, demo |
to become familiar with the
potential of GNSS to propose potential application |
Gravity
Topic |
Content |
Learning Objectives |
Theoretical background and maths |
Newton’s theory of gravity, Laplace equations, spherical harmonics |
To understand the physical and mathematical notations that are used in the following lectures |
Measurements |
Gravity measurements on Earth Satellite gravity measurements Standard reductions needed for the measurements |
To become familiar with different types of gravity measurements To identify the basic reductions and their uses |
Geopotential and geoid |
Using gravity measurements to compute geoid and other quantities |
To become familiar with the potential of gravity data To test different quantities derived from gravity data |