The default value for Degree of symmetry is 0.924, which corresponds to an angle of cosine (pi/8) radians or cosine (22.5) degrees. Although you can change this number, a target is considered symmetric only if it has a degree of symmetry greater than 0.924. Reducing the value for Degree of symmetry to less than the default to compensate for noisy imagery can produce inaccurate symmetric scattering parameters, because the target will not be symmetric.
The degree of symmetry is one of the Cameron parameters. In addition to providing information on the geometry of a target, it can be used to qualify a target for analysis by the symmetric scattering characterization method (SSCM).
The symmetric scattering characterization can be applied to symmetric and coherent targets only.
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