强震前电磁辐射显著变化现象已被越来越多震例记录到，这为地震监测预测提供了一种可能。本项目基于数字化地磁ULF秒值观测数据，分析数据预处理方法及异常信息提取新技术，研究发生在中国大陆地区的强震震例（一般地区6级、重点危险区5级以上），总结与分析震前电磁辐射所显示的各种波形、频谱特征及场强变化特点等；利用HHT、极化、偏振主轴计算等方法提取强震前可靠的电磁辐射异常信息；通过数值模拟方法，建立电磁波仿真模型，探索电磁辐射异常场产生、孕育及传播机理，为强震的监测预测尤其短临预测提供依据与参考。

More and more electromagnetic radiation changes have been recorded before strong earthquakes, it has been provided a possible way for earthquake prediction. We base on the data of geomagnetic ULF(Ultra-Low Frequency) , using the new method of abormalies extraction, research earthquakes (Ms≥6 in general areas,Ms≥5 in risk areas) in mainland China, summarize and analyse the electromagnetic radiation's waveforms, spectrum characteristic and variational characteristics of geomagnetic field intensity before earthquakes.Using HHT, polarization, polarization axis calculation to extract the anomalies of electromagnetic radiation before strong earthquakes.Using the numerical simulation method, we build a electromagnetic radiation simulation model,simulate the anomalies of electromagnetic radiation.Through the simulation,we hope to find reference evidence for strong earthquake prediction,especially for impending earthquake prediction.