【摘要】 在已知固定地面距离的发射站和接收站之间的扫频斜向探测技术能够获得电波传播群时延对频率关系的斜测电离图。由于传输斜测信号的媒质是电离层 ,因此斜测电离图包含了探测距离上电离层状态的有用信息 ,可以通过对这种电离图的反演提取电离层的状态信息。采用Rao对返回散射电离图的反演算法和解不稳定问题正则方法的结合对斜测电离图进行了反演。该方法能够克服Rao算法的不稳定性 ,获得较好的反演结果 ,展示了在处理实际斜向探测电离图的应用前景。更多还原

【Abstract】 An Oblique Ionogram is a plot showing the group path or time delay against operating frequency when using swept frequency obliquely sounding between the transmitting and receiving site. The Oblique Ionogram contains useful information regarding the state of the ionosphere over the range of the signals traverse. So it can be inverted to obtain the useful state information about the ionosphere. Based on the method presented by Rao and the norm method to solve the unstable question, the Oblique Ionogram has been inverted in this paper. The stability of the method presented by Rao was improved in some extent, and a better inversion result was obtained, showing the ability of this method in inverting the actual Oblique Ionogram.更多还原