中纬度电离层E层不均匀体的激发机制和时空演化特征与突发E层、背景风场、电子密度梯度和重力波调制有着直接联系，是目前空间天气学研究的热点之一，不仅具有重要的科学意义，且具有工程应用价值。开展多手段、多参数、多时空尺度的综合立体观测是研究这一科学问题的有效方式。本项目旨在利用位于我国中纬度地区的VHF电离层相干散射雷达、MST雷达、流星雷达、电离层垂测仪、全天空成像仪和Fabry-Perot干涉测风仪对武汉上空的电离层E层不均匀体进行联合观测，在高度上覆盖了中高层大气和电离层，在数据上包括了中纬度地区电离层E层不均匀体生成和演化的关键参数。在对探测数据分析的基础上，研究中纬度地区电离层E层不均匀体的时空演化规律；总结中纬度地区E层不均匀体的统计特征；探讨大气波动和背景电离层参数的影响，深入开展中纬度地区电离层E层不均匀体物理机理研究。

The excitation mechanism and spatial-temporal characteristics of mid-latitude ionospheric E region irregularities are strongly related to the sporadic E layer, background wind, electron density gradient and atmospheric gravity waves, which is one of the hot topics in the subject of space weather. The research of ionospheric irregularities is quite important not only for scientific research but also for engineering application. In consequence, multi-instrument and multi-parameter observational research is a effective means for solving this scientific problem. This proposal aims at joint observations of mid-latitude ionospheric E region by utilizing the VHF ionospheric coherent radar, MST radar, meteor radar, ionosonde, all-sky imager and Fabry-Perot interferometer. The height covers up atmosphere and low ionosphere region. The observational data includes the key parameter of E region irregularities. Based on the analysis of the experimental data, the temporal and spatial evolution of the irregularity will be studied. The statistical feature of the mid-latitude ionospheric irregularity will be summarized. The effect of background atmospheric waves and ionospheric parameters on the irregularity will also be discussed. Consequently, the formation mechanism of mid-latitude ionospheric E region irregularity will be analyzed in depth.