现代电子技术2016，Vol.39Issue(24)：1-5,5.DOI:10.16652/j.issn.1004-373x.2016.24.001
武汉VHF相干散射雷达及初始观测结果
Wuhan VHF coherent scattering radar and its initial observation results
摘要
Abstract
Wuhan VHF(very high frequency)Radar is the first coherent scattering radar used to observe the real⁃time evo⁃lution character of the midlatitude ionosphere field⁃aligned irregularities,which locates in Wuhan University(30.5°N,114.4°E) and works at 48.2 MHz. The design of the radar system is introduced in detail,including its antenna array system,power ampli⁃fying system,receiving system,beam steering system and data processing system. The background noise fitting method is used to eliminate the RF interference,and enhance the readability of the RTI(range time intensity)figure and definition of the effec⁃tive radar echo structure. The observation results of E region field⁃aligned irregularities of the Wuhan VHF Radar show that the occurrence of the midlatitude E region quasi⁃periodic echo is caused by the K⁃H instability inspired by the wind shear.关键词
VHF相干散射雷达/中频数字接收机/场向不均匀体/噪声基底拟合Key words
VHF coherent scattering radar/digital IF receiver/field-aligned irregularity/background noise fitting分类
信息技术与安全科学引用本文复制引用
张思源,赵正予,周晨,倪彬彬,顾旭东..武汉VHF相干散射雷达及初始观测结果[J].现代电子技术,2016,39(24):1-5,5.基金项目
国家自然科学基金资助项目 （）
