US-Poland Research on High-Latitude Ionospheric Scintillation (Aeronomy)

这项由伊利诺伊大学香槟分校的K.C. Yeh博士和波兰科学院空间研究中心放射物理实验室的Andrzej W. Wernik博士合作的美国-波兰研究项目的目标是研究卫星无线电信标闪烁。这些研究将提供有关电离层不规则结构的信息。近年来对太阳风、磁层和电离层之间耦合过程的研究引起了高纬度电离层研究活动的增加。过去的闪烁测量合作项目是在位于斯匹次卑尔根的波兰极地站进行的。利用这些数据，研究人员将：(1)更广泛地研究从该站可获得的极光、极帽和极尖区域的闪烁形态；(2)对高纬度闪烁进行模拟，避免了在高纬度明显不满足的假设，即电子密度的波动是随机的，其谱沿磁场和跨磁场具有相同的形式，并与观测结果进行比较；(3)将非线性系统研究方法应用于闪烁和原位电子密度数据。本研究将更全面地描述高纬度闪烁形态，完善闪烁理论，获得更多关于高纬度电离层不规则结构的信息。这个电子和计算机工程项目通过使美国和东欧的顶尖专家在共同感兴趣和能力强的领域结合互补的人才和汇集资源，实现了推进科学知识的计划目标。

The objective of this U.S.-Poland research project between Dr. K.C. Yeh of the University of Illinois Champaign-Urbana and Dr. Andrzej W. Wernik of the Radiophysics Laboratory, Space Research Center, Polish Academy of Science is to study satellite radio beacon scintillation. These studies will provide information about irregular structure of the ionosphere. Recent interest in coupling process between the solar wind, magnetosphere and ionosphere has lead to an increased activity in the high-latitude ionosphere studies. Past cooperative projects on scintillation measurements have been at the Polish Polar Station at Spitsbergen. Using these data, the researchers will: (1) Study more extensively the morphology of scintillation in the auroral, polar cap and polar cusps regions accessible from the Station; (2) Model the highlatitude scintillation avoiding assumptions apparently not satisfied at high latitudes, namely that fluctuations of the electron density are random with a spectrum which has the same form along and across magnetic field, and compare with observations; (3) Apply the approach used in the nonlinear system studies to scintillation and in-situ electron density data. This research will obtain fuller description of the high-latitude scintillation morphology, to improve the scintillation theory, to gain more information about the ionospheric irregular structure at high latitudes. This project in electrical and computer engineering fulfills the program objective of advancing scientific knowledge by enabling leading experts in the United States and Eastern Europe to combine complementary talents and pool resources in areas of strong mutual interest and competence.