Based on field geological observation and the preserved Quaternary offset, the authors discovered active faults since Quaternary in Jimo hot spring basin.

根据野外地质观察和第四系的断错，在青岛即墨温泉盆地发现第四纪以来活断层。

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In terms of FFDP and velocity aberration compensation theory, a new method of using dihedral Angle offset for compensating velocity aberration in large observation range is put forward.

根据远场衍射模式和速差补偿理论，提出了一种在较大观测范围内二面角速差补偿方法。

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Then influences of frequency offset and observation interval on symbol timing recovery system under this circumstance were studied.

针对这一特点，研究了加入卡尔曼滤波后频偏及观测时间长度对定时系统性能的影响。

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