signal phase shift

At present, many researches about all-optical wavelength converters only based on the signal modulation formats of binary amplitude shift keying ( OOK) and differential phase shift keying ( DPSK), but it is very few to the signal modulation format of polarization shift keying ( PolSK).

目前，全光波长转换器的研究主要集中在二进制振幅键控（OOK）和差分移相键控（DPSK）信号调制格式，对于偏振移位键控（PolSK）信号调制格式全光波长转换的研究很少。

Wireless signal propagated in the wireless channel will be affected by multi-path time delay spread, Doppler shift, angular spread and other characteristics of multi-path fading, leading to the received signal distortion in amplitude, phase and frequency.

无线信号在无线信道中传播，容易受到多径时延扩展、多普勒频移、角度扩展等多径衰落特性影响，导致接收信号在幅度、相位和频率上失真。

This paper introduces a digital phase shift signal generator. The generator is the system constructed by double CPU of man-computer interface template and phase shift generator template with the functions of detector and display.

介绍了数字式移相信号发生器，它是人机接口模板和移相信号产生模板的双CPU系统，模板之间采用串行通信，测量、显示功能齐全。

We take a correlation time-shift method which considers the phase-shift of signal to estimate the signal-to-noise ratio and it has a better result comparing with the methods mentioned the above.

在此基础上提出了相关时移法，该方法考虑了地震记录道间有效信号的相位变化，比起其它方法来更能得出好的结果。

The role of phase shifter is signal phase shift from another perspective.

移相器的作用是将信号的相位移动一个角度.