Sökning: "DMSP OLS"

Hittade 4 uppsatser innehållade orden DMSP OLS.

1. 1. Towards the Use of Satellite Data in Security Policy-Related Prediction

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för visuell information och interaktion

   Författare :Mary Chrishani Jayaweera; [2021]
   Nyckelord :satellite imagery; earth observation; remote sensing; nighttime lights; conflict prediction; time series; intercalibration; big data; cloud computing; machine learning;

   Sammanfattning : Inadequate economic data makes it more difficult for its incorporation in security-policy related prediction and there is a need for alternative datasets. Satellite data, more specifically nighttime lights data, can be used as a proxy for the economy. LÄS MER

3. 2. Linking socio-economic factors to urban growth by using night timelight imagery from 1992 to 2012: A case study in Beijing

   Master-uppsats, KTH/Geoinformatik

   Författare :Gong Fanting; [2015]
   Nyckelord :Beijing; DMSP OLS; GIS; remote sensing; socio-economic factor;

   Sammanfattning : In recent decades, the night lights data of the Earth’s surface derived from the Defense Meteorological Satellite Program’s Operational Linescan System (DMSP/OLS) have been used to detect the human settlements and human activities, because the DMSP/OLS data is able to supply the information about the urban areas  and non-urban areas on the Earth which means it is more suitable for urban studies than usual satellite imagery data.   The urban development is closed linked to the human society development. LÄS MER

4. 3. A study on Extraction of Natural Cities from the Nightlight Imagery Using Head/tail breaks method

   Kandidat-uppsats, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad

   Författare :Sirui Wu; [2013]
   Nyckelord :nightlight imagery; extraction of natural cities; head tail break; threshold; power law;

   Sammanfattning : With the high development of economic and demand for city research, an issue of detecting city boundaries plays an extremely important role in urbanization that promotes the progress of human civilization. Some critical applications such as land use, urban planning and city sprawl have been constantly discussed, which rely on the acquisition of city areas. LÄS MER

5. 4. A Case Study on the Extraction of the Natural Cities from Nightlight Image of the United States of America

   Magister-uppsats, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad

   Författare :QINGLING LIU; [2013]
   Nyckelord :cities boundaries; DMSP OLS; head tail breaks classification; nighttime lights; power law; urban areas;

   Sammanfattning : The boundaries of the cities are not immutable, they can be changed. With the development of the economies and societies, the population and pollution of cities are increasing. Some urban areas are expanding with more population or other dynamics of urbanization, while other urban areas are reducing with the changing of the dynamics. LÄS MER