Using the Multi-chains Loran-C signals to implement the independent UTC synchronization is the second approach, which is relied on the Coincidence Rule among TOCs of different Loran-C chains.

第二条途径是根据不同罗兰c链的TOC的重合规律，研究利用多链罗兰c信号实现自主toc同步。

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Since the synchronization error is independent of information signal, the chaotic modulation for large amplitude and fast varying information signals can be achieved.

由于同步误差与信息信号无关，从而实现了大幅度、快时变信息信号的混沌调制通信。

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