A New Solar Broadband Radio Spectrometer (SBRS) in China |
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| Authors: | Qijun Fu Huirong Ji Zihai Qin Zhicai Xu Zhiguo Xia Hongao Wu Yuying Liu Yihua Yan Guangli Huang Zhijun Chen Zhenyu Jin Qijun Yao Congling Cheng Fuying Xu Min Wang Libei Pei Shanhuai Chen Guo Yang Chenming Tan Suobiao Shi |
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| Institution: | (1) National Astronomical Observatories (NAOC), Chinese Academy of Sciences, Beijing, 100012, China;(2) Department of Astronomy, Nanjing University (NJU), Nanjing, 210093, China;(3) Purple Mountain Observatory (PMO), Chinese Academy of Sciences, Nanjing, 210008, China;(4) Yunnan Astronomical Observatory (YAO), National Astronomical Observatories, Chinese Academy of Sciences, Yunnan, 650011, China |
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| Abstract: | A new radio spectrometer, Solar Broadband Radio Spectrometer (SBRS) with characteristics of high time resolution, high-frequency resolution, high sensitivity, and wide frequency coverage in the microwave region is described. Its function is to monitor solar radio bursts in the frequency range of 0.7–7.6 GHz with time resolution of 1–10 ms. SBRS consists of five `component spectrometers' which work in five different wave bands (0.7–1.5 GHz, 1.0–2.0 GHz, 2.6–3.8 GHz, 4.5–7.5 GHz, and 5.2–7.6 GHz, respectively). A combination of multi-channel and scanning techniques is adopted. The component spectrometers are attached to different antennas which are separately located at Beijing, Kunming, and Nanjing. Close attention was paid to solve the problems of sensitivity, dynamic range, interference-resistance, data acquisition, and handling a large amount of data. The SBRS was put into operation in the 23th solar maximum activity period, and has proved itself to be a valuable instrument for the study of solar bursts in microwaves. |
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