I want to calculate the scattering matrix and the coherence matrix for the dual-polSAR is it possible to calculate? or calculation of the scattering matrix and the calculation of the coherence matrix only requires the quad-polSAR data. which software will be better to calculate the scattering matrix and coherence matrix.
I suggest to you links and attach files in topics.
-ADVANCED CONCEPTS IN POLARIMETRY – PART 1 1 ...
www.dtic.mil/get-tr-doc/pdf?AD=ADA437482
-Exploring the Potentiality of Polarimetric SAR Remote Sensing in ...
africanremotesensing.org/.../article-Islam%20El%20Magd_July%2...
Best regards
- 4.41 MBPolarimetric_Decompositions.pdf
- 348.73 KBSingle_vs_multi-polarization_descriptors.pdf
- 2.95 MBSPIE APRS Tutorial_SAR Polarimetry_ShashiKumar.pdf
- 1.14 MBIDENTIFICATION OF SNOW USING SAR POLARIMETRY TECHNIQUES .pdf
- 959.47 KBINVESTIGATING THE PERFORMANCE OF SAR POLARIMETRIC FEATURES IN LAND-COVER CLASSIFICATION .pdf
- 6.92 MBFundamentals of Remote Sensing SAR Polarimetry.pdf
- 2.98 MBA Review of Target Decomposition Theorems in Radar PolarimetryCLOUDE.pdf
- 48.64 MBTrainingGuide-SAR-processing-with-Geomatica.pdf
- Potential of coherent decompositions in SAR... Krogager_COHERENCE.pdf
https://ww2.mathworks.cn/matlabcentral/answers/276951-decompose-polarimetric-sar-covariance-matrices-in-matlab
you can see the following links:
1. https://vedas.sac.gov.in/vedas/downloads/ertd/SAR/L_5_Polarimetric_SAR_Data_Analysis_and_Applications_Dr_Anup_Das.pdf
2. https://edepot.wur.nl/546387
3. Article PolInSAR Coherence and Entropy‐Based Hybrid Decomposition Model
4. https://www.mdpi.com/2072-4292/11/19/2287/htm
5. https://esdynamics.geo.uni-tuebingen.de/wiki/files/remote_sensing/pdf/Manual-POLSAR.pdf
6. https://dges.carleton.ca/courses/IntroSAR/Winter2019/SECTION%203%20-%20Carleton%20SAR%20Training%20-%20SAR%20Polarimetry%20%20-%20Final.pdf
7. http://earth.esa.int/landtraining07/polsar_advanced_concepts.pdf
Dear Omkar Arvind Jadhav,
In the case of dual and compact-polarimetry, the information is mainly dealt with the 2by2 covariance matrix and other parameters derived from this covariance matrix. This same 2by2 matrix can be called covariance as well as coherency in the case of compact-pol [1]. However, if you are talking about the 3by3 full-pol coherency matrix, obviously all 9 elements are almost impossible to derive from the 2by2 dual-pol or compact-pol covariance matrix. For example, in the hybrid-polarimetry condition, the HV component is a lost parameter. Although there are various reconstruction approaches reported to estimate the HV component from hybrid-pol data [2], the exact estimation is impossible.
[1] R. K. Raney, "Hybrid-Polarity SAR Architecture," in IEEE Transactions on Geoscience and Remote Sensing, vol. 45, no. 11, pp. 3397-3404, Nov. 2007, doi: 10.1109/TGRS.2007.895883.
[2] Ajeet Kumar, Anup Das & Rajib Kumar Panigrahi (2020) Hybrid-pol Decomposition Methods: A Comparative Evaluation and a New Entropy-based Approach, IETE Technical Review, 37:3, 296-308, DOI: 10.1080/02564602.2019.1613937.
Ajeet Kumar Sir, Can we apply target decomposition to NovaSAR-1 GRD data? If you have any references please send.
Dear Omkar Arvind Jadhav ,
You can message me your contact email id, or contact number. Probably I can help you by discussing things and will share with you some related blogs on NovaSAR-1 and papers related to the processing of such dataset.
Cheers,
Ajeet
Ajeet Kumar sure sir, I'm sharing my email id- [email protected]. Is it possible to send reference material by tomorrow because I've to finalize my methodology by Monday.
Dear @Omkar,
As I understood your queries clearly, you are supposed to generate polarimetric metrics and further target decomposition using DualPol SAR data. Before jumping to any solutions, one important thing I would like to mention that *Any polarimetric analysis (scattering matrix, covariance/coherency matrix or polarimetric decomposition etc.) must need POLARIMETRIC datasets which datasets must be maintaines "Phase Coherency" between different channels like VV & VH pol, not just "Amplitude". Nowadays, it became more confusing to get this idea as Sentinel-1 mission claim to be polarimetric data with phase coherence so Sentinel SAR data is valid for polarimetric analysis using single look compkex level, but NovaSAR mission doesn't claim phase coherence and not valid for any polarimetric analysis. Second point is that only SLC data can be used for polarimetric analysis, not GRD level.
Hope it may help you to decide on data requirements for polarimetric analysis.
Regards,
Dharmendra
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