The effect of survey noises on the identification precision of ITD method is analyzed.
本文从理论上论证了观测响应中的噪声对ITD法模态识别精度的影响。
At last, ITD method based on free acceleration response is used to identify mode parameters, frequencies and modal.
最后利用基于加速度响应的ITD法识别结构的模态参数：频率和振型等。
A practical procedure of Double-Least-Square approach in ITD method of modal parameters is programed and the simulataneous identification test is conducted.
本文编制了模态参数时域识别的双最小二乘法程序，并进行了模拟试验。
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