TY - JOUR A2 - Pinchera，丹尼尔AU - 邱志宏AU - 楚曦AU - 卡尔沃 - 拉米雷斯，塞萨尔AU - Briso，塞萨尔AU - 阴，雪峰PY - 2017年DA - 2017年11月13日TI - 低空无人机Air-to-Ground Channel Measurement and Modeling in Semiurban Environments SP - 1587412 VL - 2017 AB - Small- and medium-sized unmanned aerial vehicles (UAVs) can fly for a short distance (<2 km) from a control station in a nonsegregated air space (altitudes < 100 m). It is of great interest to model the propagation channel under such condition, where there is an important influence from the environment. This paper presents multiple measurements carried out in low altitudes with a medium-sized UAV flying over a semiurban environment. Path loss exponent is given based on the measurements done at different altitudes and a height-dependent Rician ķ 因子模型。结果清楚地揭示的两个传播区的存在具有非常不同的信道特性。断点指示了信道的条件急剧变化的高度。在低海拔，障碍产生大量的多径和传播有很大的影响，而在高海拔地区的影响减轻。我们的结果对低空空气对地（AG）的传播信道的建模和UAV启用AG通信系统中，诸如信道容量和吞吐量的性能分析是有用的。SN - 1530-8669 UR - https://doi.org/10.1155/2017/1587412 DO - 10.1155 /一百五十八万七千四百一十二分之二千〇十七JF - 无线通信和移动计算PB - Hindawi出版KW - ER -