The invention discloses an indoor
radio map construction method and device based on a physical enhancement
diffusion model, and the method comprises the steps: constructing initial discontinuity physical priori including a
diffraction point set and a transmission boundary
point set according to the geometric information and
building material information of an indoor environment;
pruning the
diffraction point set in the initial discontinuous physical prior to update the discontinuous physical prior; generating a discontinuity physical prior graph according to the indoor
radio access point and the updated discontinuity physical prior; constructing a multi-
modal physical priori including a coordinate position of an indoor
radio access point, a
reflection coefficient graph and a
transmission coefficient graph representing a
building material at each position, and a discontinuous physical priori graph; and
processing the multi-
modal physical priori by a multi-
modal fusion
encoder, and inputting a
processing result as a model input condition into the trained decoupling
diffusion model to generate an indoor
radio map. According to the invention, on-site measurement is not needed, and the high-fidelity indoor
radio map can be quickly generated.