It's the key to measure the high precision time delay.
其关键技术是高精度的时延测量。
The main factor for ranging distance is high precision time delay.
时延测量精度是制约距离测量精度的主要因素。
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.
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。
Through lab simulator test and lake trial, the underwater signal processing module is proved to be satisfied with the system's demand and is with high time delay precision and reliability.
通过实验室的模拟器调试和湖试的验证，证明了水声信号处理模块符合系统要求，具备较高的时延估计精度及可靠性。
Through lab simulator test and lake trial, the underwater signal processing module is proved to be satisfied with the system's demand and is with high time delay precision and reliability.
通过实验室的模拟器调试和湖试的验证，证明了水声信号处理模块符合系统要求，具备较高的时延估计精度及可靠性。
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