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针对竞赛中存在的问题,提出:射线跟踪算法的要点是求出接受器所接收的功率,应该讨论透射,角量化精度影响射线的条数,但达到一定精度后接收功率几乎不变;不同出射角情况下,绕射系数可以相差非常大,可以简化为仅关心两个扇形;推导出在确定情况下多径干扰、宽带干扰的瞬时振幅表达式及等差数列时宽带干扰和的解析式;猜测手机信号随机性的根源.
According to the existing problems in the competition, the main point of the ray tracing algorithm is to find the power received by the receiver. The transmission and angle quantization accuracy should be considered to affect the number of rays. However, the received power is almost unchanged after reaching a certain accuracy. The diffraction coefficients can be very different, which can be simplified to only concerned with two sectors. The expressions of multipath interference, instantaneous amplitude of broadband interference and the analytical solution of broadband interference in the case of equal difference sequence are derived. Guess the root cause of the randomness of cell phone signal.