关于台阵记录分析中相似衰落法的可用性

本文在被测场为多维各向异性并存在混乱运动的情况下,导出了Pǜtter时差矢量图中的等概率椭球面与Briggs-Phillips-Shinn的相关函数特征椭球面之间的几何联系及有关的关系式,从而阐明了相似衰落法与相关分析法具有共同的理论基础。文中还对原有的相似衰落法提出了一些改进办法。在这种改进中,用等概率椭圆代替Pütter直线,因而能用简单的几何作图法迅速而又相当精确地确定相关分析法所能确定的全部欲求的物理量。此外,在作图过程中,物理图象直观,还可直接检验所测物理量的可靠性和精度。

ON THE APPLICABILITY OF SIMILAR FADING METHOD FOR ANALYSIS OF THE RECORDS OBTAINED BY CLOSE-SPACED RECEIVERS

In this paper, having taken into account the effects of random motion as well as anisotropy, the author derived simple analytic formulae expressing the geometrical parameters of equi-probability surface in Putter's plot of the ends of time-vectors in relation to those of equi-correlation surface introduced by Briggs, Phillips and Shinn. These formulae bring out the basic identity of the models used in the similar fading method and the correlation method. Therefore, based on these formulae, the author suggested a very quick and convenient graphical approach; it is nearly as simple as that of Piitter and yet vigorous enough to determine accurately all the parameters which can be determined by the elaborate correlation method. Moreover, in the cases for which the correlation method is not fully valid, the measured parameters of this simple method can be checked directly in accordance with the intuitive clarity of the geometrical picture in the course of drawing it.