DFT-Code acquisition method can estimate Doppler shifts while searching PN phase.It is necessary to increase the number of DFT points to keep the frequency error in the range of trace loop.

• DFT伪码捕获算法在进行伪码搜索的同时估计多普勒频偏,为了满足捕获精度要求,需要增加DFT点数,但随着运算点数的增加硬件实现难度成倍增长。