Based on the correlation principle, an algorithm to decomposite the damped free vibration signals of a two degrees of freedom system with close natural frequencies is put forward.

摘要基于单率成分的自由衰振动响应信号的相关性原理，提出了率密集成分的两耦合振子自由衰振动响应信号的解耦算法。

This homotopic method is an approximate analysis method, which can be more used for analyzing other behavior of the sea surface temperature anomaly of the atmosphere-ocean oscillator model.

本同伦法近似的的解析法，它能进步分析海-气振子的海表温度异常的其他性态。