为了实现水下载体高精度的定位，GPS声纳浮标需解决两个方面的技术难点：高精度的系统时钟同步和定位信号的高精度时延估计。
As for the high precision positioning of underwater targets, the GPS sonobuoy technique has two bottlenecks: high precision system clock synchronization and high accuracy time delay estimation.
该系统采用了片同步技术实现了采样后高速数字信号的可靠锁存，采用高精度的时钟管理芯片和设计合理的时钟路径对时钟抖动做了严格控制。
The Chip-Sync technology has been used to ensure the latch of high-speed signal, and we use high accuracy clock management chips and design reasonable clock way to strict control the clock jitter.
海底大地电磁仪为满足上述要求，其内部配备了高精度时钟源、姿态检测器件以及与海底电磁信息采集相关的自动信号测量与存储电路。
In order to solve the problems above, the high-precision clock, detecting posture device and automatic measurement circuit are equipped in Marine magnetotelluric instrument.
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