Print Email Facebook Twitter Remote Sensing of Japanese WWII airstrips in the Papua Province Republic of Indonesia Title Remote Sensing of Japanese WWII airstrips in the Papua Province Republic of Indonesia: Classification of the area surrounding three WWII airstrips (Mongosah, Otawiri and Sagan) Author van der Valk, Dirk (TU Delft Civil Engineering and Geosciences; TU Delft Geoscience and Remote Sensing) Contributor Lindenbergh, Roderik (mentor) Hanssen, Ramon (mentor) Degree granting institution Delft University of Technology Date 2017-08-17 Abstract In the Second World War Dutch New Guinea was a strategic battle front for both the Japanese and the Allied forces in the Pacific War. A lot of airstrips were constructed and bombed during this time, of which at least three (Mongosah, Otowari and Sagan) have never been visited after the war. This provided a great opportunity to find potential war heritage and airstrip equipment. Later this year an additional research team will go on an in-situ exploration to potentially find those objects. To do so, they needed a classification map giving information on the type and location of the vegetation. This map helps to know where to land with a helicopter, to setup base camp, to find travel ways, etc. Thus, the main objective of this thesis is to check whether it is possible to create a proper classification image with the available data. I used data obtained from the Sentinel 2 Mission (Optical data), the ALOS PALSAR Mission (L-Band Radar data) and the SRTM Mission (Digital elevation data). I pre-processed the data and used the supervised classification method, “Maximum Likelihood Classification” (MLC). I masked clouds via three different cloud masking methods, MLC Method, Threshold Method and Sen2cor (scene classification) Method. I compared the three different methods with each other and there is no significant difference between them. The classifications have been cross-validated with a reference validation dataset and the classified pixels are on average about 90% correctly classified. Subject Remote SensingMost likelyhood classificationClassification To reference this document use: http://resolver.tudelft.nl/uuid:e19a6102-9c06-40e0-a13a-16f7138fbeac Coordinates -2.495677, 133.094938 Part of collection Student theses Document type master thesis Rights © 2017 Dirk van der Valk Files PDF AThesis_DHvanderValk_4154150.pdf 6.19 MB Close viewer /islandora/object/uuid:e19a6102-9c06-40e0-a13a-16f7138fbeac/datastream/OBJ/view