Untangling the Geometry and Speed for RF Sensing Spectrograms

This paper addresses a fundamental challenge in RF sensing where Doppler signatures entangle target motion with sensing geometry. The authors establish a new foundation for physically interpretable RF sensing that disentangles reflector speed from geometry. They jointly recover the speed, geometry factor, relative amplitude, and width of each dominant Doppler ridge. This approach improves the applicability of RF sensing in unconstrained real-world settings.