How is the (2,2) cross-pol term in the 3x3 symmetrized covariance matrix (c3r3c) generated from the 4x4 non-symmetrized covariance matrix (c4r6c)?
From the PSCONV help, I understand it is the average of the (2,2) and (3,3) terms in the 4x4 matrix, but is it also multiplied by 2 in the PSCONV algorithm?
I usually see a factor of 2 in front of the (2,2) term in 3x3 covariance matrices as in https://www.nrcan.gc.ca/earth-sciences/geomatics/satellite-imagery-air-photos/satellite-imagery-products/educational-resources/9543?wbdisable=true
Can you please confirm whether or not this has been applied in PSCONV?
Thx,
AT
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I resolved this by speaking with PCI directly. The answer, fyi:
Yes, the (2,2) term in the 3x3 symmetrized matrix is multiplied by 2 when it is created with PSCONV in order to preserve power along the diagonal.