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 <[email protected]>
Sent: February 1, 2022 12:33 PM
To: ni hao <[email protected]>; [email protected]
<[email protected]>
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.
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