摘要
分别研究了V/UHF地空通信中理想情况的几何信道模型和现实情况的椭圆几何信道模型,从不同角度较全面地分析了V/UHF地空通信的信道特性。在理想情况的几何信道模型中,对接收点合成场强的计算公式进行了仿真分析,得出了接收场强与发射功率等因素的关系;在现实情况的椭圆几何信道模型中,推导出了地面接收信号的标准多径时延和波达方向的概率密度函数,对标准多径时延、波达方向和接收功率进行了仿真,表明了多径效应对超短波地空通信的影响。
The ideal geometric channel model and elliptical channel model of V/UHF air-to-ground communication were studied and simulated respectively, and the characteristics of V/UHF air-to-ground communication channel were analyzed comprehensively from different point of view. For the ideal geometric channel model, the expression of the received total electric field was simulated and analyzed, and the relations between the received total electric field and transmitting power, etc were derived. For the real elliptical channel model, the probability density functions of the normalized multipath delay and DOA of the received signals on the ground were derived, the normalized multipath delay, DOA and the received power were simulated, and the influence of the multipath effect to V/UHF air-to-ground communication was indicated.
出处
《弹箭与制导学报》
CSCD
北大核心
2008年第4期276-278,共3页
Journal of Projectiles,Rockets,Missiles and Guidance
基金
空军装备研究基金
陕西省自然科学基金(2006F22)资助
关键词
V/UHF
地空通信
几何信道模型
多径效应
V/UHF
air-to-ground communication
geometric channel model
multipath effect
