Questions tagged [sentinel-snap]
Snap is an open source software from ESA for the processing of remote sensing images
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Limited functionality in the ESA SNAP toolbox on Mac OS M1 Silicon Chip
I am working on Mac OS (on the Silicon processor) using the latest version of the SNAP toolbox. Even though I installed the Azul JDK 8.0, I was not able to make the SNAP toolbox work. This bug has ...
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Using a semivariogram to compare different images of the same site
I am writing my master degree thesis.
For my thesis I downloaded images from Copernicus and elaborated them using different methods to obtain images of FVC of some sites.
Now my tutor is asking me to ...
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Removing clouds from Sentinel-2 imagery (Level 2A) using ESA SNAP
I solved my S2 resampling issue with your support. I tried to remove Sentinel-2 (Level 2A) clouds using Idepix but it support to Level 1C.
I want to remove clouds from Sentinel-2 imagery (Level 2A) ...
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S2 Resampling Error with SNAP
When I tried to S2 Resampling using SNAP 9.0.0, I get an error and the processing fails. I kept all parameters default.
Error as follows,
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Sentinel-2 Level 2A clouds removal
I tried to remove clouds from Sentinel-2 imagery (Level 2A) using ESA SNAP. I use SNAP 9.0.0. I tried to follow the tutorial "Automatic cloud Masking of Sentinel 2 Imagery Using ESA SNAP". ...
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Handling retrieval of Sentinel data from long term archive in automated script
I would like to create a mock-up for a cloud service that offers the user a simple map view in the web browser, giving them the ability to select a region (polygon) and some parameters (similar to the ...
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How to compile Sentinel SNAP Toolbox on AARCH64
Reason for asking this question
I have a computer with an M1 processor running MacOS. I was trying to download and install the Sentinel SNAP Toolbox for Microwave Data Processing. However, it appears ...
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Mosaic different data Sentinel-2 L2A image with color difference
I have downloaded two L2A level sentinel-2 images at 2022-09-05 and 2022-09-07 from scihub. After subset and resampling on SANP, I used seamless mosaic in ENVI to mosaic the two scenes, and I found ...
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Resampling Sentinel-1 GRD data - should it be converted to linear scale before resampling?
I am trying to resample Sentinel - 1 data(original resolution of 10m) to 500m in GEE platform.
#Resampling the image to 500m
def resamp(image):
resampd = image.reduceResolution(
...
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Problem Facing while performing Interferometry using Sentinel-1 image
I am using sentinel 1 data to extract the surface elevation using snaphu-unwrap tool. I perform all the steps according to literature and all the steps provide data too. However in the last step where ...
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Retrieve an array of pixel values from snappy product
I am using snappy for processing SAR data, but it seems that snappy uses its own 'product' objects for storing raster data. But i only need the resulting array of pixel values after I finish working ...
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Exporting SNAP S1 preprocessing model as Python script
I am new to SNAP and Sentinel 1. I am using SNAP for preprocessing of the Sentinel-1 image, however, I am dealing with large S1 datasets so the preprocessing time is long.
Can I export the model to a ...
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Problems with phase unwrapping unsing SNAPHU
I am trying to generate a DEM using a pair of Sentinel-1 images by following this tutorial. I am running into the following problem in the Phase unwrapping step using SNAPHU. There are some noticeable ...
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Sentinel 1 stripping artifact
I am processing a S1 SLC image as follows: Read>Apply orbit file>S1 TOPS Split>Radiometric Calibration (complex)>S1 TOPS Deburst>Polarimetric Speckle filter>Terrain correction (Range ...
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Band used for deformation estimation using In-SAR
Which polarization of SAR data (C-band - Sentinel-1A) shall I use to get a better deformation map of a mountain terrain - VV or HH?
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How can I know if I'm using terra or aqua satellite
I'm using the MOD09GA product (mainly using band 6). I want to work only with the data from the Terra satellite; how can I know if the image is Terra or Aqua?
I looked in the MODIS Surface Reflectance ...
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Applying C2RCC atmospheric correction to Sentinel-2 L1C images in SNAP
Sentinel-2 Level-1C images are available in this AWS bucket. I am trying to get a Sentinel-2 L1C image of an area with an atmospheric correction done by the C2RCC Processor. I try to do this using ...
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Resampling of Sentinel-1 data to 1km resolution using gdal and snappy modules
I am trying to resample my preprocessed Sentinel-1 data to 1km resolution. I am facing the following issues when I try to do it using snappy and gdal modules.
Using gdal,
Used code:
os.system('...
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Writing data in TerraSAR-X COSAR Format
I am looking for a way to make SNAP read TS-X data that I have modified in some ways.
I have written Python code to read a TS-X stripmap product (from a *.cos file) and to perform some modifications ...
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How to convert Latitude Longitude to UTM - conflicting UTM Zone codes
Just as in this question, I download a sentinel tif file:
from pystac_client import Client
catalog = Client.open("https://earth-search.aws.element84.com/v0")
mysearch = catalog.search(...
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SNAP: Regrid Sentinel-1 GRD to lon-lat?
Is there a simple way to get sentinel-1 GRD data on a longitude-latitude-grid using SNAP? I guess I could create a lon-lat-grid first and use the collocate function, but is there a better way?
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Opening Sentinel 2 data with Python [closed]
I'm just trying to learn how to process Sentinel 2 data with Python. All of the tutorials seem to use the data in GeoTIFF format. So I opened the data with SNAP and tried to export as a GeoTIFF but it ...
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Opening KMZ file from SNAP file in QGIS
I am struggling with this issue in QGIS. I have a KMZ file contain three files (exported from SNAP).
legend.png
overlay.kml
overlay.png
I tried to open the KMZ and it doesn't work.
I tried to open ...
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Using SNAP in an automated pipeline
I found a way to extract data from Copernicus SciHub, but I'd love to find a way to automate to pre-processing in a Python script for both S2 and S1 data without having to use SNAP Desktop. Is there ...
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Sentinel-1 image backward
I have this problem with my images of the Ross Ice Shelf:
This is an image that has been Radar - Radiometric- Calibrate- Amplitude_HH - Gamma0
followed by Speckle Filter.
This is what happens when I ...
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Complex SAR values in Interferogram
By what I understand, a "standard" slc from a SAR has complex values for each pixel. Here the phasor consists of the magnitude and the relative phase. What I don't understand is the complex nature of ...
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Seeking Sentinel L1C images (.SAFE) from 2015-2019 since no longer available on Copernicus Open Access Hub
I am looking for Sentinel images from before 2019 in L1C quality and .SAFE format, as I want to correct them with sen2cor in SNAP to convert them to L2A quality.
Where can I find them now that they ...
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snaphu export error using SNAP
I used SNAP Sentinel 1 to calculate subsidence. After snaphu export I open snaphu.conf and copy command as below then run it in Terminal. I got the following error in picture:
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Various parameters in submitting SNAP InSAR jobs
I am a newbie to the InSAR technique, and I am working with this currently. When submitting jobs, I have to set the values of Azimuth Coherence Window Size, Range Coherence Window Size, Azimuth ...
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Processing Sentinel-3 SLSTR data using python via snappy API
I am trying to convert Sentinel-3 SLSTR S6 radiance data to a Geotiff file. However, I am finding converting the Sentinel-3 data which is in NCDF4 format to Geotiff format correctly very difficult. I ...
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Retrieve pixel value using SNAP-engine and Python for specific geographic coordinates
I'm trying to retrieve pixel values in Sentinel-3 data for specific geographic coordinates using the SNAP-Engine.
Until now, I transform the geographic coordinates to the corresponding X and Y with ...
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How to perform subset in Sentinel 1 slc data for PSInSAR processing?
I want to process sentinel 1 slc dataset for PSInSAR analysis.Currently, I am working on SNAP software and following this article
1: https://www.researchgate.net/publication/326655316_ESA_SNAP_-...
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Export Sentinal 2 TIFF image from SNAP with all the bands intact?
I have some Sentinal 2 data from which I need an image of a small area. How do I export that particular image with all the 13 bands intact to a TIFF image using SNAP? I can download 3 bands by viewing ...
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Can't import WKT polygon to SNAP
I have big size Sentinel-1 image and I would like to clip it to smaller size. For that i'm trying to import shapefile but I get errors all the time:
This is my polygon WKT:
PolygonZ ((102....
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SNAP error encountered with Sentinel-1 SAR from Google Earth Engine
I have downloaded Sentinel-1 SAR images from GEE in VV and VH polarization.
I have two groups of images: 17 images in VV polarization and 17 images with VH polarization.
I have a model that is ...
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Open Image from Sentinel 1 in SNAP problems
I have download SNAP today but I'm facing few problems with upload the image.
I have download image from Copernicus Open Acess Hub but whenever I download it I can't open it properly.
those are the ...
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Generate LULC maps using Sentinel data of European Space Agency?
I found out that Sentinel data is of 10m x 10m resolution whereas LANDSAT data is of 30m x 30m resolution. Did anyone come across research in which Sentinel data is used for making LULC maps or is ...
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Reprojection problem in SNAP (ESA)
I am trying to do a RBR (Relative Burn Ratio) and for this, I am using two Sentinel 2 L2A images (before and after the fire). The native CRS of the data is EPSG:32634 - WGS 84 / UTM zone 34N - ...
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Cloud masking using sen2cor
I already have the SNAP 7, and I can’t run sen2cor 2.08 directly from it. However, I can alternatively use the command prompt but it can only take the L1C images as input.
My problem now is that I ...
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Sentinel-2 L2A cloud masking
I have a Sentinel-2 L2A image downloaded from the Scihub.copernicus website.This image has clouds that muddle the classification. Thus, I want to remove them using sen2cor and SNAP. Is there any ...
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Connection Time out during Terrain Correction in Snap gpt command line process - Sentinel 1
I am processing Sentinel-1 using the Snap command line gpt. The xml file i am using was produced using the graph builder within the SNAP software, and slightly modified to suit my needs. Please see ...
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SAR processing using Python
I would like to batch process Sentinel-1 images in Python.
Previously I have used SNAP (Sentinel-1 Toolbox) to apply Calibration, Multilooks, Speckle Filters, Terrain Correction and then export as a ...
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Which version of Sen2Cor is used by the ESA?
I'm trying to find out which version of the Sen2Cor processor was used by the ESA to process a Sentinel L2A product for a specific date. The latest version is Sen2Cor v2.8 which was published this ...
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sen2cor BOA output
I have installed all of the necessary programs for this process (Anaconda, Step SNAP, Sen2cor, etc). I have installed the plugin for sen2cor in SNAP.
When I run the Level1-c product through Sen2cor, ...
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Sentinel-1 SAR image is displayed upside down
I am looking at Sentinel-1 SAR image downloaded from ESA Copernicus - dhus location around south of Tokyo, Japan. File format is GeoTIFF.
It looks good in QGIS.
However, if I use SAGA,
or SNAP, or ...
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Sentinel 2 Atmospheric Correction Inconsistencies
I'm having some peculiar issues with Sentinel 2 data. I've downloaded two coterminous tiles (one L1C tile from EarthExplorer and one L1C/L2A tile from AWS) taken at the same time and date. I have done ...
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Binary Raster (numpy array) to shapefile
i did a classification with a min/max threshold for stormdamaged areas. For that i calculated two indices (NSDVI) and (SAVI). I intersected two numpy arrays from those results. I recieve a binary ...
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Mosaicking multiple Sentinel-1 images in SNAP software
I am trying to mosaic multiple sentinel sar images in esa snap software. The scenes are acquired from two adjacent tracks. I used the tool S1 slice wizard in snap under radar tool menu but my images ...
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Converting a netCDF4 file to (georeferenced) GeoTIFF, problems with georeferencing
Let's assume a netCDF4 (.nc) file downloaded from https://s5phub.copernicus.eu/dhus/odata/v1/Products('e6e91b26-ca43-43d4-9c08-c9c14dd6737e')/$value . This is sulphur dioxide measurement dataset over ...
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Sentinel 1 (A and B) Vertical Datum
I have been working through the ASF's "Recipes" for the creation of a DSM from Sentinel 1 (A and B) imagery.
I am able to produce a DSM, and am relatively happy with the results in terms of the ...
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