With this system, a varying frequency can be measured automatically in high sampling frequency, and the data are saved in a disk.

它能以较高的采样频率，对一动态变化的频率进行自动测量，并将数据存盘。

youdao

Besides, the target echo signal is often weak with strong noise, so data acquisition (DAQ) card should sustain high sampling frequency and resolution.

由于目标回波的低信杂比，需要采集卡具有较高的采样率和分辨率。

youdao