The disappearance of diffraction in Sionna 1.0.2

[yankaiqiao]

I noticed that Sionna 1.0.2 does not provide an interface for diffraction, while version 0.19.2 does. Could anyone explain why this is the case?

The PathSolver call interface in 1.0.2 is as follows:

def __call__(self,
                 scene : Scene,
                 max_depth : int = 3,
                 max_num_paths_per_src : int = 1000000,
                 samples_per_src : int = 1000000,
                 synthetic_array : bool = True,
                 los : bool = True,
                 specular_reflection : bool = True,
                 diffuse_reflection : bool = False,
                 refraction : bool = True,
                 seed : int = 42) -> Paths:

The compute_paths call interface in 0.19.2 is as follows:

 paths = scene.compute_paths(num_samples=1e6,
                            los=True,
                            reflection=True,
                            diffraction=True,
                            scattering=False)

[faycalaa]

Hi @yankaiqiao,

As mentioned in the release notes for Sionna 1.0, support for diffraction will be added in a future release. If you need this feature, we recommend using version 0.19.2 for now.

[yankaiqiao]

Got it, thanks for the help!

[merlinND]

For future reference, diffraction support was added back in version 1.2.0 (release notes).