ISSN 
非稳态三维散射场景的时域自相关特性分析
详细信息Temporal Autocorrelation Properties for Non-Stationary 3D Multipath Scattering
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摘要: 结合航空移动通信环境的三维非稳态特征,推导了立体空域内散射体相对于收发节点随机运动散射场景的时域自相关函数的数学表达式。该表达式为有限区间内的高维积分,结合蒙特卡洛高维积分法和射线跟踪法验证了该表达式的正确性。数值结果表明：节点运动速度、散射体速度和散射体数量越大,相应的时域自相关函数衰减越快。该表达式和求解办法具有较强的推广性,通过降维可等效为二维散射场景,令散射体相对于收发节点静止可等效为稳态散射场景。相关结论可为下一代航空移动通信宽带传输体制的相干时间与相干距离的确定提供理论支撑。
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