曲靖与临沧站甚高频相干散射雷达数据集

      The very high frequency coherent scatter radar dataset from the Qujing and Lincang Stations

      • 摘要: 甚高频相干散射雷达通过布拉格散射机制获取电离层不规则体多个参数,是电离层不规则体探测的常用地基设备。中国电波传播研究所在云南曲靖(103.7°E,25.6°N)和临沧(99.8°E,23.5°N)建设了两套甚高频相干散射雷达,其采用电离层多普勒波束控制观测模式,持续监测我国中低纬地区电离层不规则体的时空变化特征。雷达系统通过信号采集、相干积累、混合多普勒干涉法和功率谱分析,获取不规则体的回波功率、信噪比、谱展宽和多普勒速度4类参数。甚高频相干散射雷达数据集,为低纬电离层不规则体时空演化、电离层-中性大气耦合过程、临近空间环境保障等研究提供了高质量数据支撑。

         

        Abstract: The very high frequency coherent scatter radar is a vital ground-based instrument for detecting ionospheric field-aligned irregularities, deriving parameters of these ionospheric irregularities through the Bragg scattering mechanism. The China Research Institute of Radiowave Propagation has deployed two such radar systems in Qujing (103.7°E, 25.6°N) and Lincang (99.8°E, 23.5°N), Yunnan, China. Operating in an ionospheric Doppler beam steering mode, they enable continuous monitoring of the spatiotemporal characteristics of ionospheric irregularities over the mid- and low-latitude regions of China. Through signal acquisition, coherent integration, hybrid Doppler interferometry, and power spectrum analysis, the radars retrieve four types of parameters: echo power, signal-to-noise ratio, spectral width, and Doppler velocity. The dataset from these very high frequency coherent scatter radars provides high-quality data support for research on the spatiotemporal evolution of low-latitude ionospheric irregularities, ionosphere–neutral atmosphere coupling processes, and near-space environmental support.

         

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