自然激励技术法，用互相关函数代替脉冲响应函数。-Natural excitation technique method using cross-correlation function instead of the impulse response function.

用互相关法求相对剩余静校正量；并用时差统计法或相关函数统计法分离，最后可求出记录道的绝对剩余静校正量。-Using cross correlation method the relative residual statics and separated by the difference method or statistical correlation function statistics of the last track can be obtained an absolute resi

Clustering analysis based on Euclidean distance, Very suitable for the study using computer vision, Including the generalized cross-correlation function GCC time delay estimation.