[gdal-dev] Sentinel-1 IW Single Look Complex (SLC)

[ni hao]

Hi List,

I downloaded the 3.4.1 and python binding (python 3.6)
Tested on an IW SLC product contains one image per sub-swath, for a total of 3 tiff for HH.

It still only shows one raster band: the first TIFF, rather than three.
Although ds.GetSubDatasets() shows three: IW1, IW2, IW3

ds=gdal.Open('manifest.safe')

>>> ds.RasterCount
1
>>> ds.GetSubDatasets()
[('SENTINEL1_CALIB:SIGMA0:manifest.safe:IW1_HH:INTENSITY', 'Single band with IW1 swath and HH polarization and SIGMA0 calibration'), ('SENTINEL1_CALIB:BETA0:manifest.safe:IW1_HH:INTENSITY', 'Single band with IW1 swath and HH polarization and BETA0 calibration'), ('SENTINEL1_CALIB:GAMMA:manifest.safe:IW1_HH:INTENSITY', 'Single band with IW1 swath and HH polarization and GAMMA calibration'), ('SENTINEL1_CALIB:UNCALIB:manifest.safe:IW1_HH:COMPLEX', 'Single band with IW1 swath and HH polarization and UNCALIB calibration'), ('SENTINEL1_CALIB:UNCALIB:manifest.safe:IW1_HH:INTENSITY', 'Single band with IW1 swath and HH polarization and UNCALIB calibration'), ('SENTINEL1_CALIB:SIGMA0:manifest.safe:IW2_HH:INTENSITY', 'Single band with IW2 swath and HH polarization and SIGMA0 calibration'), ('SENTINEL1_CALIB:BETA0:manifest.safe:IW2_HH:INTENSITY', 'Single band with IW2 swath and HH polarization and BETA0 calibration'), ('SENTINEL1_CALIB:GAMMA:manifest.safe:IW2_HH:INTENSITY', 'Single band with IW2 swath and HH polarization and GAMMA calibration'), ('SENTINEL1_CALIB:UNCALIB:manifest.safe:IW2_HH:COMPLEX', 'Single band with IW2 swath and HH polarization and UNCALIB calibration'), ('SENTINEL1_CALIB:UNCALIB:manifest.safe:IW2_HH:INTENSITY', 'Single band with IW2 swath and HH polarization and UNCALIB calibration'), ('SENTINEL1_CALIB:SIGMA0:manifest.safe:IW3_HH:INTENSITY', 'Single band with IW3 swath and HH polarization and SIGMA0 calibration'), ('SENTINEL1_CALIB:BETA0:manifest.safe:IW3_HH:INTENSITY', 'Single band with IW3 swath and HH polarization and BETA0 calibration'), ('SENTINEL1_CALIB:GAMMA:manifest.safe:IW3_HH:INTENSITY', 'Single band with IW3 swath and HH polarization and GAMMA calibration'), ('SENTINEL1_CALIB:UNCALIB:manifest.safe:IW3_HH:COMPLEX', 'Single band with IW3 swath and HH polarization and UNCALIB calibration'), ('SENTINEL1_CALIB:UNCALIB:manifest.safe:IW3_HH:INTENSITY', 'Single band with IW3 swath and HH polarization and UNCALIB calibration')]
________________________________
From: Even Rouault <even.rouault at spatialys.com>
Sent: February 1, 2022 12:33 PM
To: ni hao <ni_hao88 at hotmail.com>; gdal-dev at lists.osgeo.org <gdal-dev at lists.osgeo.org>
Subject: Re: [gdal-dev] Sentinel-1 IW Single Look Complex (SLC)


Hi,

There have been improvements in GDAL 3.4.0 (*) regarding SLC products in the SAFE/Sentinel 1 driver. I can see that it seems to work fine on a S1A_IW_SLC__xxxx dataset. I don't have EW SLC products at hand

Even

(*) https://github.com/OSGeo/gdal/commit/eea55bfcfd36c081b8354b0a4e132cfc51332ef8

Le 01/02/2022 à 17:26, ni hao a écrit :
Hi list,

GDAL Sentinel-1 driver question:
I know that GDAL Sentinel-1 driver works well on GRD (detected).
What about SLC?

Level-1 IW SLC product contains one image per sub-swath, per polarisation channel, for a total of three or six images (3 tiff for HH, or 6 tiff for HH/HV dual-band)
The EW SLC products contain one image per sub-swath, per polarisation channel, for a total of five or ten images.

https://sentinels.copernicus.eu/web/sentinel/technical-guides/sentinel-1-sar/products-algorithms/level-1-algorithms/single-look-complex

Thank you.



_______________________________________________
gdal-dev mailing list
gdal-dev at lists.osgeo.org<mailto:gdal-dev at lists.osgeo.org>
https://lists.osgeo.org/mailman/listinfo/gdal-dev


--
http://www.spatialys.com
My software is free, but my time generally not.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/gdal-dev/attachments/20220203/7959d815/attachment-0001.html>