基于GPS载噪比下降的太阳射电暴检测方法

利用太阳射电暴影响全球定位系统(global positioning system, GPS)性能这一特征,提出一种基于GPS载噪比下降的太阳射电暴检测方法。首先计算观测地的太阳高度角,接着筛选出“降点”和“升点”用于确定单个观测地单颗卫星的波谷时间区间,最后综合多颗卫星和多个观测地得到太阳射电暴的检测结果。实验结果表明:太阳射电暴检出率随太阳入射角的增大而增大,在L2频段对600太阳流量单位(solar flux unit, SFU)以上的太阳射电暴检出率达到80%以上,在L2频段检出效果优于L1。该检测方法识别率高,成本低,不依赖于射电望远镜,能进行全天候实时的监测。

Detection method of solar radio bursts based on decrease of GPS carrier-to-noise ratio

Taking advantage of the influence of solar radio bursts on the performance of global positioning system (GPS), a detection method of solar radio bursts based on the decrease of GPS carrier-to-noise ratio is proposed. Firstly, the solar incidence angle of the observation ground is calculated, then the "falling points" and "rising points" are selected to determine the time interval of the trough of a single satellite from the single observation ground, and finally the detection results of the solar radio bursts are determined by integrating multiple satellites and multiple observation grounds. The experimental results show that the detection rate of solar radio bursts increases with the increase of the solar incidence angle, the detection rate of solar radio bursts above 600 SFU on the L2 frequency band reaches more than 80%, and the detection effect on the L2 frequency band is better than that on L1. This detection method has a high recognition rate, low cost, does not depend on the radio telescope, and can carry out all-weather real-time monitoring.