Abstract Solar activity affects geophysical and heliophysical processes. Long-term changes in solar activity are closely related to climate change. Solar physicists and earth science researchers need longer observations of solar activity. Current continuous observations of solar activity are only about 400 years. Some scholars have compiled naked-eye observations of sunspots from 200 BC to 1918 AD from historical documents. In this present work, the authors use the weighted wavelet transform to study the observations series. The results show the Suess - de Vries cycle with a period from 195- to 235-year existing in the discontinuous sunspot series. Meanwhile, the cycle signal changes with time. Especially, the Suess/de Vries cycle is relatively obvious from 200 BC to 400 AD, 800 AD to 1340 AD, 1610 AD to 1918 AD, with a period of about 211-year, about 195-year, and about 235-year, respectively.

中文翻译：

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历史上对太阳黑子的肉眼观测中存在苏斯/德弗里斯循环的新证据

摘要 太阳活动影响地球物理和太阳物理过程。太阳活动的长期变化与气候变化密切相关。太阳物理学家和地球科学研究人员需要对太阳活动进行更长时间的观测。目前对太阳活动的连续观测只有大约 400 年。一些学者从历史文献中汇编了公元前200年至公元1918年对太阳黑子的肉眼观测。在目前的工作中，作者使用加权小波变换来研究观测序列。结果表明，不连续的太阳黑子系列中存在苏斯-德弗里斯周期，周期从 195 年到 235 年不等。同时，周期信号随时间变化。特别是Suess/de Vries周期从公元前200年到公元400年，公元800年到公元1340年，公元1610年到公元1918年比较明显，周期约211年，