Ray-Tracing-Assisted Calibration Based on Divide-and-Conquer Algorithm in Macrocellular Environment

In addressing the significant influence of material dielectric parameters on outdoor three-dimensional ray tracing predictions, an algorithm based on divide-and-conquer strategy for calibrating the dielectric properties of materials is proposed. The algorithm segments the solution space for dielectric parameters into smaller sub-spaces, resolving each incrementally to arrive at the global optimal solution. It employs a prudent convergence strategy for the solution space, discarding those sub-spaces that have a low probability of containing the optimum. The results indicate that this algorithm not only maintains high accuracy but also facilitates rapid calibration of dielectric parameters.