摘要
在超短波30~88 MHz波段,路径损耗中值公式Okumura-Hata模型已远远不能满足实际工程对损耗计算的高精度需求,本文利用电磁数值仿真方法,建立真实城市环境中的电波传播模型,通过大量的多种背景模型和收发条件下的数值实验,拟合出适用于30~88 MHz波段的电波传播路径损耗中值公式,弥补Okumura-Hata公式在低端频段的空缺,有效地扩展了Okumura-Hata公式的应用范围,提高了它的实用性。
A new propagation model of the path loss in the frequency band of 30~88 MHz is given,fitted by a great many numerical experiments under a number of kinds of backgrounds and lots of different transmitting and receiving conditions,which sets up an analogy environment of electromagnetic wave propagation of a real city using electromagnetical simulation,and makes up for a deficiency of Okumura-Hata formula to effectively expand its field of application and raise its practicability.
出处
《电子器件》
CAS
2010年第2期197-200,共4页
Chinese Journal of Electron Devices
基金
国家自然基金资助(60771040)
国家重点实验室基金资助(9140C0704060804)
