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幅度概率分布(Amplitude Probability Distribution——APD)是电磁干扰测量中的一个最新测量参数,它针对电磁干扰的随机性,采用了统计方法,从而能较好地反映出所测干扰的特性。本文较为全面地介绍和讨论了APD统计测量参数方面的内容。包括该参数的定义、测量方法等内容的简述,并较为详细地讨论了APD与其他传统测量参数(平均值V_(aue)、有效值V_(rms、m)准峰值V_(qp)、形状系数V_d)间的相互求解,以及该参数在预测通讯系统性能降级上的应用等内容。并从APD的概念及APD的测量方法出发,提出了该测量参数所存在的缺点。
Amplitude Probability Distribution (APD) is one of the most recent measurement parameters in electromagnetic interference measurement. It takes a statistical approach to the randomness of electromagnetic interference and can better reflect the characteristics of the measured interference. This article describes and discusses the APD statistical measurement parameters in a more comprehensive manner. Including the definition of the parameter, the measurement method and so on. The APD and other traditional measurement parameters (averaging V_ (rms, m) quasi-peak V_ (qp) Coefficient V_d) mutual solution, as well as the parameters in predicting the performance degradation of communication systems and so on. Based on the concept of APD and the measurement method of APD, the disadvantages of this measurement parameter are proposed.