在低仰角的情况下，海面的杂波振幅特性满足对数正态分布。本程序就产生这样的杂波-At low elevation, the sea clutter amplitude characteristics to meet the lognormal distribution. This procedure resulted in such a clutter

响应面法计算结构的可靠度.已知极限状态方程，变量服从对数正态分布，变量均值和标准差已知。-Response surface methodology to calculate the reliability of structures known to limit state equation, variables lognormal distribution, the mean and the standard deviation is known variables.