Evaluates the far-field scattering amplitude from a previously computed
TMM object using the stored transition-matrix blocks. This allows the same
retained
modal operator to be reused for arbitrary single-target incident and
receive-angle combinations without rebuilding the boundary solve.
Usage
tmm_scattering(
object,
theta_body = NULL,
phi_body = NULL,
theta_scatter = NULL,
phi_scatter = NULL
)Arguments
- object
Scatterer-object previously evaluated with
target_strength(..., model = "TMM", store_t_matrix = TRUE).- theta_body
Incident polar angle (radians). Defaults to the stored TMM incident angle.
- phi_body
Incident azimuth angle (radians). Defaults to the stored TMM incident angle.
- theta_scatter
Receive polar angle (radians). Defaults to the exact monostatic direction,
pi - theta_body.- phi_scatter
Receive azimuth angle (radians). Defaults to the exact monostatic direction,
phi_body + pi.
Value
A data frame with the frequency, complex scattering amplitude, the corresponding differential cross section, and its level in dB.