针对扫频方式对频偏捕获时间影响很大，本文给出了几种扫频方案，以缩短整体捕获时间。
Because swept modes have a great influence on capture time of frequency offset, several swept modes are given to reduce the overall capture time.
该捕获方法在捕获到同步长周期伪码的同时，也得到了多普勒频偏值的近似值。
Using this method, the synchronized PN code phase and approximation value of Doppler shift are got.
针对大频偏下高动态直扩接收机伪码捕获时间长的问题，提出了一种新的基于FFT相位精确估计频偏的改进方法。
A new code acquisition method based on phase difference correction of FFT is presented to solve the problem of long code acquisition time in high dynamic DSSS receivers having large frequency offset.
针对大频偏下高动态直扩接收机伪码捕获时间长的问题，提出了一种新的基于FFT相位精确估计频偏的改进方法。
A new code acquisition method based on phase difference correction of FFT is presented to solve the problem of long code acquisition time in high dynamic DSSS receivers having large frequency offset.
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