These years, it is the latest research subject that GPS timing frequency calibrating data has been conducted by using Kalman filter technology in order to increase accuracy.
利用卡尔曼滤波技术对GPS定时校频数据进行处理提高精度，是国际上近几年的最新研究课题。
The synchronization techniques for burst packet transmission mode OFDM systems is studied, including timing, frequency offset estimation and channel estimation.
本文主要研究适用于突发OFDM传输系统的同步技术，包括定时、频偏估计和信道估计。
Sample timing, frequency, and location should be carefully selected based upon their relationship to the operation performed.
根据与所进行操作的联系，选定样品周期、频率与位置。
Sample timing, frequency, and location should be carefully selected based upon their relationship to the operation performed.
根据与所进行操作的联系，选定样品周期、频率与位置。
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