风场驱动VHF雷达距离拓展特性仿真与试验对比研究OA
Simulation and experimental comparative study on range extension characteristics of VHF radar echoes observed based on wind-driven effects
本文针对不规则体散射不完全方向灵敏性引起的空间拓展特性,构建了距离拓展宽度随探测距离变化的理论模型,系统研究了大气风场漂移下距离拓展宽度与雷达探测距离的依赖关系,并依托曲靖站甚高频(very high frequency,VHF)相干散射雷达的实地观测数据进行了验证.数值模拟与实测结果的对比分析表明,二者呈现出高度的一致性,验证了所提方法在电离层不规则体特性描述与分析中的精准性与可靠性.本研究揭示了风场漂移诱导的距离拓展效应,为解释不规则体回波高度衰减现象提供了一种全新的物理机制与分析视角.
This paper presents a study on the spatial expansion characteristics resulting from the incomplete directional sensitivity of irregularity scattering,and constructs a theoretical model that describes how the range extension width varies with detection distance.Based on observational data from the Qujing VHF coherent radar,it systematically investigates the dependence of the range extension width on radar detection distance under the influence of atmospheric wind field drift.A comparative analysis of numerical simulations and measured results shows good consistency,verifying the accuracy and reliability of the proposed method in describing and analyzing the characteristics of ionospheric irregularities.This study reveals the range extension effect induced by wind field drift,providing a new physical mechanism and analytical perspective for explaining the height attenuation phenomenon of irregular echoes.
徐彬;葛淑灿;安豪;李海英;朱庆林;董翔;韩杰;李统乐;刘馨蔚
中国电波传播研究所,青岛 266107中国电波传播研究所,青岛 266107西安测绘研究所,西安 710054西安电子科技大学,西安 710071中国电波传播研究所,青岛 266107中国电波传播研究所,青岛 266107中国电波传播研究所,青岛 266107西安电子科技大学,西安 710071中国电波传播研究所,青岛 266107
信息技术与安全科学
不规则体散射方向灵敏性空间拓展风场漂移VHF相干散射雷达
irregularity scatteringdirectional sensitivityspatial extensionwind driftVHF coherent scatter radar
《电波科学学报》 2026 (3)
530-536,7
国家自然科学基金(62201529,62171355)山东省自然科学基金(ZR2024QD072)中国电波传播研究所稳定支持科研经费(A132302297,A250200510)中原领军人才项目(264200510022)国家重点研发计划(2022YFF0503902)National Natural Science Foundation of China(62201529,62171355)Shandong Provincial Natural Science Foundation(ZR2024QD072)Stable Support Scientifit Project of China Research Institute of Radiowave Propagation(A132302297,A250200510)Zhongyuan Leading Talent Program(264200510022)National Key Research and Development Program of China(2022YFF0503902)
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