coherent demodulator meaning in English

相干解调器

Quadrature coherent demodulator
正交相干解调器
Firstly , the theory and the architecture of hardware system are described , secondly , the steps of the signal processing are discussed in detail . based on the experiments and the characteristics of the signal , we pre - process the signals with band - pass filter , proportional amplifier and coherent demodulator . after sampling and analysis doppler information , we display the final results distinctly to alarm in time
然后，结合系统中各主要部分的任务，详细介绍了信号处理的各个步骤：通过实验比较，并结合接收信号的特点，选用带通滤波器、比例放大器、相干检波等技术对信号进行预处理；然后对获得的多卜勒信息进行采样和频谱分析；最后，用比较直观的形式显示数据结果，以及时准确地告警。
The frequency offset estimation algorithms for gmsk signal are also discussed and a frequency offset estimator with larger estimation range and higher accuracy is proposed . two kinds of synchronization structures are compared with each other . at last , the synchronizer described above and a differentially coherent demodulator compose a blind gmsk receiver
其次，基于对目前gmsk信号盲载频偏差估计方法的分析和比较，根据第五章提出的频差估计思想，提出一种宽估计范围、高精度的gmsk信号频差估计方法。