移动通信2026，Vol.50Issue(9)：39-44,6.DOI:10.3969/j.issn.1006-1010.20260704-0008
低空场景通信感知信道测量与建模
Measurement and Modeling of Communication and Sensing Channels in Low-Altitude Scenarios
摘要
Abstract
With the development of the low-altitude economy,unmanned aerial vehicles are increasingly operating with high mobility over wide-area three-dimensional spaces,creating simultaneous demands for communication coverage and sensing-based supervision and posing new challenges to air-to-ground propagation modeling.To address these challenges,air-to-ground communication link measurements and propagation characterization for low-altitude unmanned aerial vehicles are conducted over a commercial 3.5 GHz 5G network.Two measurement campaigns,namely fixed-altitude straight-line round-trip flights and patrol-route flights,are designed to collect downlink reference signal received power data at different flight altitudes,propagation distances,and representative terrain conditions.Based on the measurements,air-to-ground path loss is derived by incorporating parameters such as base-station transmit power and antenna gain,and the close-in free-space reference distance model is employed to characterize propagation at different altitude levels.Measurement results show that the propagation characteristics of low-altitude air-to-ground channels exhibit pronounced altitude and scenario dependence.As the flight altitude increases,the path-loss exponent gradually approaches that of free-space propagation.Owing to the more complex distribution of buildings and scatterers in urban environments,clutter loss is generally higher than that in village environments.The results provide measurement-based and theoretical support for low-altitude communication coverage analysis,propagation model parameterization,and integrated sensing and communication network simulations.关键词
低空通信/无人机/空地信道/路径损耗/杂波损耗Key words
low-altitude communications/unmanned aerial vehicles/air-to-ground channels/path loss/clutter loss分类
信息技术与安全科学引用本文复制引用
张世宇,张宇翔,刘亚萌,张建华,胡铮,孙语瞳,王嘉琳,南作用,班瑞..低空场景通信感知信道测量与建模[J].移动通信,2026,50(9):39-44,6.基金项目
国家自然科学基金项目(62525101,62401084,62341128) （62525101,62401084,62341128）
北京市自然科学基金项目(L243002,L2603010) （L243002,L2603010）
