coherent demodulator 中文意思是什麼
coherent demodulator
解釋
相干解調器- coherent : adj. 1. 緊密地結合著的；凝聚性的。2. （話等）有條理的，首尾一貫的；一致的。3. 【光學】相干的，相參的。
- demodulator : 反調器
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Quadrature coherent demodulator
正交相干解調器 -
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，基於對目前gmsk信號盲載頻偏差估計方法的分析和比較，根據第五章提出的頻差估計思想，提出一種寬估計范圍、高精度的gmsk信號頻差估計方法。 -
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
然後，結合系統中各主要部分的任務，詳細介紹了信號處理的各個步驟：通過實驗比較，並結合接收信號的特點，選用帶通濾波器、比例放大器、相干檢波等技術對信號進行預處理；然後對獲得的多卜勒信息進行采樣和頻譜分析；最後，用比較直觀的形式顯示數據結果，以及時準確地告警。
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