详细讨论了误码发生服从泊松分布的条件下 ,以实际误码个数除以传输的总码数来估计误码率这种方法的估计特征 ;给出了测量结果的精度、可靠性与测量时间内平均误码个数及测量时间的关系 ,可为实际测量中测量时间的选取提供参考 The characteristics of estimating the bit error rate (BER) using the number of actual errors divided by the total number of transmitted bits are discussed in detail under the condition that the errors occur under Poisson distribution. The accuracy, reliability, The relationship between the average number of errors and the measurement time in the measurement time can provide a reference for the selection of the measurement time in the actual measurement