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Questions tagged [sentinel1]

Sentinel-1 is a satellite constellation maintained by ESA used for wide range of applications. A few of these uses include sea and land monitoring, emergency response due to environmental disasters, and economic applications. Use this tag for questions related to processing Sentinel-1 data. Add other tags of the programming language you are using, as appropriate.

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How to extract reflectance values from a SAR-Optical stack in R

I have stacked sentinel-1 and sentinel-2 images in QGIS. I did preprocessing in SNAP and used the "align rasters" tool in QGIS to resample the images to 20m and to register them to a common projection. I want to perform classification in R, but it's…
Wong
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Filtering Sentinel 1 Image Collection to my area of interest produced no feature (or image) in google-earth-engine

My objective it to load and filter 2015 to 2016 sentinel images for my project area (AOI); The code produced image collection without image. Can you help me The following is the code originally from…
Kef.G
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Converting geographical coordinates (long, lat) to pixel position (x,y) for a Sentinel-1 SAR image

How can i get the (x, y) pixel position from the geographical coordinates in a Sentinel-1 Synthetic Aperture Radar (SAR) satellite image? I can access a downloaded image info sg as from snappy import ProductIO path='path_name' product =…
Ioannis Nasios
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Converting pixel position to geographical coordinates (lat, long) for a Sentinel-1 SAR image

How can i get the geographical coordinates from x,y position in a Sentinel-1 Synthetic Aperture Radar (SAR) satellite image? For example, I can access a downloaded image info sg as from snappy import ProductIO from snappy import PixelPos…
Ioannis Nasios
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How to remove mosaic lines between images with gdal

Maybe this is a simple issue but I couldn´t find a solution for it. I used gdal (gdal merge, and also trying with buildvrt and translate) for mosaic 8 sentinel 1 images in osgeo4w shell and it seems fine except when I zoom in and find white lines…
simon
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i am fetching a data from sentienl1 rtc using python in jupyter notebook

The code in jupyter environment so I am able to run it in jupyter notebook in local env. and its taking ages to do but still showing in progress, when i try to do the same in colab or sage-maker its throwing issue like ValueError: Failed to…
racoon
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Create a mosaic from minimum number of Sentine-1 SAR images that has a maximum coverage of a polygon shapefile

I have a polygon shapefile that defines a very large ROI. In order to cover this ROI, I need to create a mosaic of rasters (Sentinel-1 images). The mosaic needs to be made with minimum number of rasters and should cover the ROI completely. If I do a…
webapp
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Plot 2 dimensional numpy array in .npy file using matplotlib?

I have numpy file stored as "test.npy" which is a 2 dimensional Synthetic Aperture Radar(SAR) image data with VV and VH polarization bands. How do I plot this 2 dimensional image array using matplotlib? import numpy as np img_array =…
hillsonghimire
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Variable/optional arguments in a function within a function

I am working on a script that let's me connect to the Sentinel satellite database to download the requested map files. from sentinelsat import SentinelAPI, read_geojson, geojson_to_wkt def get_available(input_geojson, user, password, date_start,…
Schinken
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