RANDOM ERROR DISTRIBUTION EVALUATION METHOD AND EVALUATION DEVICE

摘要

It is possible to quantitatively judge the compatibility of a digital signal "a" to the Poisson distribution. A digital signal "a" having a predetermined error ratio E and random error data is divided into 10 measurement units each having the number of data Na decided according to the error ratio. The measurement units are acquired for a predetermined number of samples "n". Measurement is performed by using the number of errors contained in each of the measurement units as a measurement value k. The generation frequency f is calculated for each of measurement values k1 to km so as to calculate the Poisson distribution function having the measurement value as a variable. The coupling degree between the Poisson distribution and the generation frequency distribution of the respective measurement values is decided by using the Chi-square goodness of fit test.