Title

Authors

v.unnithan@jacobs-university.de,

Background

Geoinformatics / Geomatics / GIS*

• Introduction, Background, Aims & Objectives
• Geodesy
• Cartography
• Photogrammetry
• Geodata Analysis – spatial / temporal / interpolation

Current Trends in Geo Information / Geospatial Science / Technology

• Widespread applicability and advancements in location-based technologies, penetration of GNSS systems in precision applications, development of sophisticated sat-nav technologies
• GIS-enabled AR/VR; digital twins; convergence of mobile GIS and 3D technologies
• Indoor Mapping, UI and IoT
• High-resolution imagery and remote sensing, real time data, UAV’s

Geodesy

• Geodesy is the science of accurately measuring the Earth's size, shape, orientation, mass distribution and the variations of these with time.
• e.g. How high is Mt. Everest ? Why ?
• Measuring Groundwater/drought analysis

GPS / GNSS

• Satellite based pseudo time ranging, terrestrial
• Resolution and accuracy
• Orbits, atmospheric  delays, clock  offsets
• How precise can we be (project question) ?
• DGPS
• RTK

Cartography

• Art and science of map making
• Visual Representation based on information
• Requires:
• Projections (see https://gist.github.com/mbostock/29cddc0006f8b98eff12e60dd08f59a7 or https://observablehq.com/@d3/projection-comparison or True Size - https://www.thetruesize.com/)

Cartography

• Representation (colour, distributions)
• Summary at bit.ly/fakemaps
• Project on representation and perception

Thanks .. Questions ..

• Thanks .. questions ..

Remote Sensing Photogrammetry

Drone Photogrammetry

• Structure from Motion (SfM) – based on Scale Invariant Feature Transform (SIFT) (Lowe, 1999)
• Large variety of drones, payloads possible
• Project – getting the most out of drone based photogrammetry

Links .. projects ..

• Examples / Suggestions
• RTK – GPS - the need for higher, and continuous precision
• https://earth-planets-space.springeropen.com/articles/10.1186/BF03351948
• http://www.gnss-pnt.org/symposium2008/abstract/oral/B12a/7-727-a.pdf
• https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/96JB03860
• Cartography – (mis)representation and perception of geospatial information
• https://www.elsevier.com/books/information-visualization/ware/978-0-12-381464-7
• https://content.taylorfrancis.com/books/download?dac=C2013-0-22546-7&isbn=9781317891659&format=googlePreviewPdf
• http://journals.sagepub.com/doi/pdf/10.1177/0309132507077082
• Photogrammetry and Remote Sensing - drones and their applications in earth sciences
• http://dx.doi.org/10.1016/j.scitotenv.2015.01.109 
• https://linkinghub.elsevier.com/retrieve/pii/S0169555X13001736
• http://linkinghub.elsevier.com/retrieve/pii/S0169555X13001736

Planetary Data Sciences

• Prof. Angelo Rossi
• Links to two interesting talks:
• https://aprossi.eu/content/sa2023
• https://aprossi.eu/content/gmap