在环境激励下的大型结构的动力特性分析时，直接使用由此获取的数据来进行结构模态参数识别往往精度较差。随机减量技术用平均和数理统计的方法，将环境激励的响应中提取自由衰减振动响应。 计算量小，处理速度快，应用成本低。

Packet : RDT.txt filelist

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