A Geometry-Based, Consistency-Checked Integrated Sensing and Communication Channel Model for Fixed-Wing UAV Airport Ground Operations

Abstract

Integrated sensing and communication (ISAC) for uncrewed aerial vehicle (UAV) airport ground operations must represent a communication link and a co-located monostatic return that share one scene but obey different propagation relations. We present a geometry-based, consistency-checked model with design parameters at reported measurement scales for a fixed-wing UAV parked at an open hangar and a second fixedwing UAV taxiing past neighbouring hangars. Shared geometry generates separate line-of-sight, reflected, and clustered communication paths, a direct target return, and static monostatic clutter, each with its own delay, Doppler, gain, and visibility. A trajectory-arc-length raised-cosine window gates only the communication cluster paths, compared with fixed and hardswitch controls, and local delay-Doppler maps are checked against path-level geometric references. The transform conserves energy, smooth visibility reduces out-of-band leakage about fiftyfold relative to hard switching in the selected boundary-containing window, and extending a reduced four-cluster layout to a sixcluster multi-hangar layout raises the peak effective multipath count from six to eight under a shared power normalization. The parameterized model supports early algorithm evaluation.