This paper has discussed the way of probing Dopplershift signal based on crossed phase detecting method in detail and introduced each function circuits briefly.
本文详细的论述了依据正交相位检测法提取多普勒频移信号的方法，并对各部分实现电路作一简要的介绍。
2
Their main function is to simulate the satellite signal from the really satellite on the satellite orbit through changing code phase, Dopplershift, carrier and signal-to-noise ratio.
其主要功能就是通过改变码相位、多普勒频移、载波和信噪比来模拟卫星轨道上真实卫星发射的信号。
3
The acquisition performance of the system had been analyzed in detail with phase error of PN sequences, Dopplershift and background noise taken into consideration.