Fusion of Measurement and Simulation Technique for Electromagnetic Environment Analysis in Large-Scale Urban Areas

Accurate analysis of electromagnetic environments, especially in large-scale urban areas, is essential to ensure the safety of urban electromagnetic spaces. This article presents a novel fusion technique that combines measurements from spectrum sensing sensors with an efficient hybrid algorithm that integrates parallel computation, higher order method of moments (HOMoM), and uniform geometrical theory of diffraction (UTD), to improve the accuracy of electromagnetic environmental analyses. The proposed technique addresses key challenges, including high costs associated with extensive measurements and poor accuracy in results fit from limited measurement data, as well as slow and imprecise simulation outcomes. By continuously updating the simulated electromagnetic field data with measured data, the technique improves simulation accuracy and enables efficient analysis of large urban areas. Experimental results from a 60-km2 area in Xi’an demonstrated a root mean square error (RMSE) of less than 8 dB, with updates processed in under 8 s, making it a practical and efficient solution for large-scale urban electromagnetic environment analysis.