Solar radio type II bursts serve as early indicators of incoming geo-effective space weather events such as coronal mass ejections (CMEs). In order to investigate the origin of high-frequency type II bursts (HF type II bursts), we have identified 51 of them (among 180 type II bursts from SWPC reports) that are observed by ground-based Compound Astronomical Low-cost Low-frequency Instrument for Spectroscopy and Transportable Observatory (CALLISTO) spectrometers and whose upper-frequency cutoff (of either fundamental or harmonic emission) lies in between 150 MHz–450 MHz during 2010–2019. We found that 60% of HF type II bursts, whose upper-frequency cutoff $⩾$300 MHz originate from the western longitudes. Further, our study finds a good correlation ($~0.73$) between the average shock speed derived from the radio dynamic spectra and the corresponding speed from CME data. Also, we found that analyzed HF type II bursts are associated with wide and fast CMEs located near the solar disk. In addition, we have analyzed the spatio-temporal characteristics of two of these high-frequency type II bursts and compared the derived from radio observations with those derived from multi-spacecraft CME observations from SOHO/LASCO and STEREO coronagraphs.

太阳射电 II 型爆发是日冕物质抛射 (CME) 等地球有效空间天气事件的早期指标。为了研究高频 II 型爆发（HF II 型爆发）的起源，我们已经确定了其中 51 个（在 SWPC 报告的 180 个 II 型爆发中）由地面复合天文低成本低用于光谱学和便携式天文台 (CALLISTO) 光谱仪的频率仪器，其上限频率截止（基波或谐波发射）在 2010-2019 年期间介于 150 MHz-450 MHz 之间。我们发现 60% 的 HF II 型爆发，其上限频率截止$⩾$300 MHz 来自西经。此外，我们的研究发现了一个很好的相关性（$~0.73$) 来自无线电动态频谱的平均冲击速度与来自 CME 数据的相应速度之间的关系。此外，我们发现分析的 HF II 型爆发与位于太阳盘附近的宽而快速的 CME 相关。此外，我们分析了其中两个高频 II 型爆发的时空特征，并将来自无线电观测的数据与来自 SOHO/LASCO 和 STEREO 日冕仪的多航天器 CME 观测数据进行了比较。