广义Digisonde漂移分析原理

本文给出一种广义Ｄｉｇｉｓｏｎｄｅ漂移分析，取消了ＤＤＡ的假设限制，使Ｄｉｇｉｓｏｎｄｅ漂称测量能应用于更为复杂的运动形式，如电离层研究中的剪切、辐散或辐辏等运动形式。文中阐述了ＧＤＤＡ的原理并给出一些模拟实验结果。

THE PRINCIPLE OF GENERALIZED DIGISONDE DRIFT ANALYSIS

he utility of Digisonde Drift Analysis (DDA) is demonstrated recently in the polar region ionospheric convection measurements. However, the assumption of uniform velocity in the field of view of sounder made in DDA is not always correct. Therefore a Generalized Digisonde Drift Analysis (GDDA) is introduced that is not limited to the condition of uniform velocity and thus makes it possible that the Digisonde drift measurement can be used in the complicated ionospheric motion analysis such as velocity shears, divergence and convergence. The main concept of GDDA and some promising simulation results are presented in the paper.