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Showing result 1 - 5 of 12 essays matching the above criteria.

  1. 1. Kriging radio environment map construction

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Erik Lundqvist; [2022]
    Keywords : Kriging; Radio environment; Statistics; Inverse distance weighting;

    Abstract : With the massive increase in usage of some parts of the electromagnetic spectrum during the last decades, the ability to create real time maps of signal coverage is now more important than ever before. This Masters project is designed to test two different methods of generating such maps with a one second limit to processing time. READ MORE

  3. 2. Mapping Noise Pollution with Open-source GIS

    University essay from Högskolan i Gävle/Samhällsbyggnad

    Author : Faustina Lina Yeboah; [2021]
    Keywords : Road traffic noise; CNOSSOS-EU; noise exposure; Lday; Levening; Lnight; Lden;

    Abstract : In a time when urban areas continue to expand, environmental noise pollution especially from road traffic remains a big challenge. This study was aimed at using open-source GIS tools to predict road traffic noise pollution using the mid-sized city of Gävle as a case study. READ MORE

  4. 3. Interpolation and visualization of sparse GPR data

    University essay from Umeå universitet/Institutionen för fysik

    Author : Rickard Sjödin; [2020]
    Keywords : GPR; Ground Penetrating Radar; Interpolation;

    Abstract : Ground Penetrating Radar is a tool for mapping the subsurface in a noninvasive way. The radar instrument transmits electromagnetic waves and records the resulting scattered field. Unfortunately, the data from a survey can be hard to interpret, and this holds extra true for non-experts in the field. The data are also usually in 2. READ MORE

  5. 4. Evaluation of water stress mapping methods in vineyards using airborne thermal imaging

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Alon Zuta; [2020]
    Keywords : Geography; Geographical information systems; GIS; Remote sensing; Cover crop; Thermal imaging; Spatial variability; vineyards; interpolation; water stress index; CWSI; Ig; stem water potential; UAV; Rheingau; Interpolation.; Agriculture and Food Sciences; Biology and Life Sciences; Technology and Engineering; Earth and Environmental Sciences;

    Abstract : With low cost and high efficiency, use of airborne infrared thermography imaging from an unmanned aerial vehicle (UAV) has become a widely used technique to measure plant water stress. With that, the use of UAV mounted thermal camera as a precision agriculture technique to map crop water stress is not trivial and its success is depended on variety of factors which are still needed to be studied and understood. READ MORE

  6. 5. Evaluating spatial mapping using interpolation techniques

    University essay from Linköpings universitet/Institutionen för datavetenskap

    Author : Allan Gholmi; [2017]
    Keywords : ;

    Abstract : In this thesis, the inverse distance weighting, different kriging methods, ordinary least squares and two variants of the geographically weighted regression was used to evaluate the spatial mapping abilities on an observed dataset and a simulated dataset. The two datasets contain the same bioclimatic variable, near-surface air temperature, uniformly distributed over the whole world. READ MORE