Intense solar radio burst events in the L-band are one of the potential factors affecting the stability of navigation and communication. To address this, Yunnan Observatories, Chinese Academy of Sciences, and National Space Science Center, Chinese Academy of Sciences, have specifically developed the Langfang L&S-band Precision Solar Radio Flux Telescope, which conducts real-time monitoring of 8 frequency points in the L-band and 2840 MHz (i.e., the F10.7 index) in the S-band. The system adopts real-time calibration technology, which switches the antenna and matched load to access the receiver in real time, and uses the noise power difference between the antenna input signal and the 50Ω matched load as observation data. This reduces the receiver gain variation caused by temperature and other factors, and improves the stability of observation data. Currently, the telescope is in good operating condition. Through 1333 days of continuous observation, the correlation coefficient between its key space weather indicator data (F10.7 index) and international data reaches 0.95. During this period, multiple events of solar radio bursts affecting navigation signals have been captured. This verifies the effectiveness of the radio telescope in monitoring key space weather indices and provides technical support for long-term services to space weather users in the future.
DownLoad: