航空兵器2025，Vol.32Issue(2)：67-73,7.DOI:10.12132/ISSN.1673-5048.2024.0177
空地双向链路信道测量及统计特性研究
Research on Measurement and Statistical Characteristics of Air-to-Ground Bidirectional Links Channels
摘要
Abstract
The development of UAV communication systems has underscored the complexity of analyzing wireless channel characteristics for air-to-ground bidirectional links.In order to better assess the performance of UAV communication systems,this paper introduces a scheme for measuring and analyzing the multipath charac-teristics of air-to-ground bidirectional links.A method for capturing the channel impulse response is presented,employing constant false alarm rate detection for multipath extraction and channel feature analysis.Particularly,an arrival angle estimation algorithm based on a backpropagation neural network is proposed,which is aimed at enhancing the precision of the angle parameter estimation.To validate the reliability of the methods presented in this paper,field measurements are conducted,where the channel characteristics of air-to-ground bidirectional links,including multipath distribution,delay spread,and angle spread,are analyzed and compared.The com-parison of simulation and field results demonstrates that the proposed method enables high-precision channel characteristic analysis for air-to-ground bidirectional links.The validity and limitations of the channel reciprocity theorem have been verified.关键词
空地信道/双向信道/多径参数/信道测量/反向传播神经网络Key words
air-to-ground channel/bidirectional channel/multipath parameters/channel measurement/BPNN分类
武器工业引用本文复制引用
杨羽欣,雷泰雅,华博宇,陈小敏,刘玉超,李瀚芃,朱秋明..空地双向链路信道测量及统计特性研究[J].航空兵器,2025,32(2):67-73,7.基金项目
国家自然科学基金面上项目(62271250) （62271250）
江苏省自然科学基金项目(BK20211182) （BK20211182）
江苏省重点研发计划(BE2022067 （）
BE2022067-1 （）
BE2022067-3) （）
