I

itu-r

Sub-THz/THz physics module for ns-3.43 NTN scenarios — 100 GHz to 1 THz. HITRAN-2020 line-by-line absorption, ITU-R P.835/676/618/838 channels, D-band ISL, UM-MIMO up to 16384 elements, RIS quantisation sweep, ISAC CRB, EKF beam tracker, LEO-pass demos. Cross-validated against ITU-R P.676-13 and am. GPL-2.0.