
151
Polarimetric SAR Descriptors for Rice Monitoring
151
is the total symmetric or irregularity depolarized power,
is the total asymmetric depolarized power,
C, D are the generator of target global and local shape, respectively,
E, F are the generator of target local twist and global twist or helicity, respectively,
G, H are the generator of target local and global coupling, respectively.
As
and
are interchangeable, the elements of
can be written in terms of
elements:
T =
1
2
()
(
11 22 33 44 12 34 13 24
12 34 11 22 33
kkkk kjkkjk
kjkkkk
++−− +
++−+kkkjk
kjkkjk kkkk
44 23 14
13 24 23 14 11 22 33 44
)
+
−−−++
(7.8)
7.2.2 target CharaCteriza ...