1) log-distance path loss model
对数距离路径损耗
2) path loss exponent
路径损耗指数
1.
The values of signal strength from receiver are obtained by measuring scatter spot in every indoor street and the mean value of path loss exponent in the structure in indoor street under the light of sight (LOS) is obtained by using the method of Minimum Mean Square Error (MMSE).
可选择4种具有此类型结构的室内传播环境进行研究,对每个通道式室内结构的环境均采用了空闲状态下的离散距离采样测试法得到信号强度,然后利用最小均方误差法拟合了这种结构下无线信号的视距路径损耗指数,得到其平均值,为研究室内无线信道的特性提供了参考。
3) pathloss
路径损耗
1.
Aim at the lower height transmission environment by using the ultra wide band wireless signal in the communication link of micro air vehicle,analyse the probable existing landform and area in the propagation channel,and its impact on the pathloss of UWB signal.
针对将超宽带无线信号应用于超小型无人机通信链路的低空传输环境,分析了信号传播可能遇到的各种地形、地物等因素对传输损耗的影响,选择修正的S-V多径信道模型,对选定的两个信号传播环境进行了仿真,并给出了信道的路径损耗、冲激响应、rm s时延扩展、平均超量时延、多径分量数目和功率延迟剖面,仿真结果表明该模型能够有效反映信道的特性参数,可为超宽带接收机的设计提供参考。
2.
The field strength of reflection and diffraction rays is calculated in the local ray fixed coordinate systems to obtain the total field and pathloss of signals site.
反射线和绕射线的场强在本地射线基坐标系下计算，得出接收点处信号的总场强和路径损耗。
3.
To explore and simulate the impact of multipath fading,pathloss,and shadowing fading on wireless networks,mathematical and simulation models for fading and shadowing are proposed,a method to calculate the shadowing effect is designed,and the utilization of the pathloss exponent is optimized.
为了考察多径衰落、路径损耗和阴影衰落效应对无线网络性能的影响并对其进行准确模拟,建立了多径衰落和阴影衰落的数学和仿真模型,设计了阴影衰落效应的计算方法,优化了路径损耗指数的使用。
4) path loss
路径损耗
1.
Modeling of propagation path loss in a canopy;
树冠中电波传播路径损耗的研究及模型的建立
2.
Measuring of Mobile Communications Electromagnetic Wave Propagation Path Loss;
移动通信电波路径损耗的测试
3.
With the platform, the wireless signals characteristics of the tactical communication were analyzed, such as the propagation paths, receiver power and path loss.
针对这些因素,在建立不规则地形环境模型、战术通信设备模型的基础上,构建了复杂环境下的战术通信信道仿真平台,研究和探讨了战术无线通信信号在此环境中的传播路径、接收功率和路径损耗等特性,并给出了仿真分析结果。
5) path-loss
路径损耗
1.
Thus, the path-loss is determined as the condition of topology construction, and a path-loss based distributed topology control algorithm (PLBD) is designed.
考虑接收信号强度作为拓扑构建条件时需节点具备相同发射功率的不足,提出将路径损耗大小作为拓扑构建的条件,设计了一种分布式拓扑控制算法——PLBD。
6) loss distance
损耗距离[光]
补充资料：介质损耗角正切试验(见电容率与损耗因数试验)
介质损耗角正切试验(见电容率与损耗因数试验)
dielectric loss tangent test
)!eZh.sunhooJ一002匕engq一e sh一yon介质损耗角正切试验(dieleetri。1055 tangenttest)见电容率与损耗因数试验。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条