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Author Vaaja, M. T., Kurkela, M., Maksimainen, M., Virtanen, J., Kukko, A., Lehtola, V. V., Hyyppä, J., & Hyyppä, H. url  doi
openurl 
  Title MOBILE MAPPING OF NIGHT-TIME ROAD ENVIRONMENT LIGHTING CONDITIONS Type Journal Article
  Year 2018 Publication (down) The Photogrammetric Journal of Finland Abbreviated Journal  
  Volume 26 Issue 1 Pages  
  Keywords Lighting; Remote Sensing  
  Abstract The measurement of 3D geometry for road environments is one of the main applications of mobile mapping systems (MMS). We present mobile mapping applied to a night-time road environment. We integrate the measurement of luminances into a georeferenced 3D point cloud. The luminance measurement and the 3D point cloud acquired with an MMS are used in assessing road environment lighting conditions. Luminance (cd/m2) was measured with a luminance-calibrated panoramic camera system, and point cloud was produced by laser scanners. The relative orientation between the GNSS, IMU, camera, and laser scanner sensors was solved in order to

integrate the data sets into the same coordinate system. Hence, the georeferenced luminance values are transferable into geographic information systems (GIS). The method provides promising results for future road lighting assessment. In addition, this article demonstrates the night-time mobile mapping principle applied to a road section in Helsinki, Finland. Finally, we discuss the

future applications of mobile-mapped luminance point clouds.
 
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  Call Number IDA @ intern @ Serial 2650  
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Author Lazar, M. url  doi
openurl 
  Title Shedding Light on the Global Distribution of Economic Activity Type Journal Article
  Year 2010 Publication (down) The Open Geography Journal Abbreviated Journal Togeogj  
  Volume 3 Issue 1 Pages 147-160  
  Keywords Economics; Remote Sensing  
  Abstract Collection of data on economic variables, especially sub-national income levels, is problematic, due to various shortcomings in the data collection process. Additionally, the informal economy is often excluded from official statistics. Nighttime lights satellite imagery and the LandScan population grid provide an alternative means for measuring economic activity. We have developed a model for creating a disaggregated map of estimated total (formal plus informal) economic activity for countries and states of the world. Regression models were developed to calibrate the sum of lights to official measures of economic activity at the sub-national level for China, India, Mexico, and the United States and at the national level for other countries of the world, and subsequently unique coefficients were derived. Multiplying the unique coefficients with the sum of lights provided estimates of total economic activity, which were spatially distributed to generate a spatially disaggregated 1 km2 map of total economic activity.  
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  ISSN 1874-9232 ISBN Medium  
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  Notes Approved no  
  Call Number GFZ @ kyba @ Serial 2440  
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Author Garstang, R.H. url  openurl
  Title Brightness of clouds at night over a city. Type Journal Article
  Year 2007 Publication (down) The Observatory Abbreviated Journal  
  Volume 127 Issue Pages 1-13  
  Keywords Skyglow  
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  Notes Approved no  
  Call Number LoNNe @ kagoburian @ Serial 553  
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Author Crawford, D. L. url  openurl
  Title Photometry: teminology and units in the lighting and astronomical sciences Type Journal Article
  Year 1997 Publication (down) The Observatory Abbreviated Journal  
  Volume 117 Issue Pages 14–18  
  Keywords Remote Sensing  
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  Notes Approved no  
  Call Number LoNNe @ kagoburian @ Serial 918  
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Author Teare, S. W. openurl 
  Title The night sky brightness at Mount Wilson Observatory Type Journal Article
  Year 2000 Publication (down) The Observatory Abbreviated Journal  
  Volume 120 Issue Pages 313-317  
  Keywords Skyglow  
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  Notes Approved no  
  Call Number GFZ @ kyba @ Serial 2001  
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