I am new to remote sensing and am currently exploring it for research purposes. However, I am facing a challenge. The sample of a plastic bottle that I placed on the sea surface, measuring 7 x 3 meters, at the research location of Kodingareng Lompo Island, Makassar, Indonesia, between 17 July 2024 - 10 August 2024, is not visible in Sentinel-2 imagery. Additionally, when processing this data in the SNAP application using the Floating Debris Index (FDI) and Plastic Index (PI), the sample is not detected.
I would appreciate your assistance with this matter. Thank you
Your floating panel is too small to be clearly visible by a sensor with a 10x10m resolution.
Your panel might have some influence, but not strong enough.You need to go to higher resolution sensors like WorldView or something from planet or any other sensor with a resolution of 0.5m.
Thank you for answering my question it is very helpful.
yah, my floating panel was deliberately made smaller than 10 x 10 m to find out if Sentinel 2 is able to detect floating plastic smaller than 10 x 10 m because based on Themiscloeus’ reference, a floating panel made with a size of 3 x 10 m can be detected so it is suggested to make it smaller than that. Sorry if I don’t understand this yet, can I ask for the use of worldview and the planet is the same as copernicus downloading sentinel 2 data?
WorldView data can be obtained from ESA. just follow the link above. For data from Planet and most other high-res data you need to pay for. Also, you need to check data availability for your region. Often high-res data is only available for specific sites.
