... Electron frequency drift 电子频移 frequency drift compensation 频移补偿 AFDR Automatic Frequency Drift Rejector 自动频率漂移抑制器 ...
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多普勒频移补偿：大的多普勒频移会引起载波同步及伪码捕获性能的下降。
Doppler compensation techniques: the large Doppler frequency offset can case the performance degraded in PN and carrier synchronizing.
因此，可以只在或主要在信道状况足够好的情况下才进行多普勒频移补偿。
Thus, the Doppler shift compensation is implemented only or mainly in good enough channel conditions.
基于提高声场水平纵向相关的频移补偿方法，提出了一种声场波导不变量的计算方法。
A method of calculating the waveguide invariant based on the frequency-shift compensation method, which is used to improve the longitudinal correlations of acoustic fields, is developed in this paper.
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