I tried to create C2 matrix from sentinel-1 SLC IW data. my system has 16GB RAM and corei7 processor.when I try to preprocess VV and VH at the same time JAVA heap space error appears. In order to solve this problem firstly I used S-1 Tops Split and then my preprocessing step is :
1- apply orbit file
2- radiometric calibration
3- debrust
4- polarimetix matrix generation (C2)
but in this step this error appears :
A problem occurred during the target product initialisation
Type: Operator Exception
Message:Input should be a polarimetric product
Hi @ABraun I want to have sigma0 from C2 matrix elements of sentinel-1 SLC data . do my processing steps true?
1- S1 tops split
2-apply orbit file
3-calibrate
4-deburst
5-merge
6-matrix generation(C2)
7- multilook
8-speckle filter
9- terrain correction
patience please - sometimes we spend our weekends outside this forum.
If we look at the formula, we see that C11 and C22 are calculated like this:
C11 = |VV|²
C22 = |VH|²
To result in the reporded range of values (you are probably looking at the 95% range from the color manipulation tab*), this would mean that
VV ranges between 0 and 1.7
VH ranges between 0 and 0.36
To me this sounds quite logic.
You can compare the entire range of values in the statistics tool
@ABraun thanks for your answer
Do you mean that my my answer quite logic or your range of VV and VH ? and If my answer is not logic what would you suggest to correct it?
thanks in advance
but my C11 matrix is coming all black
Top split
2)apply orbit file
3)calibrate and save complex output
4)S1 back geocoding (created stack of products)
5)Deburst
and apply polarimetric speckle filter.
please help
Please try Polarimetric Matrix Conversion > C2 after deburst, then check if your data is still there and if so, then apply the Polarimetric Speckle Filter.
