phase-coherent signal 中文意思是什麼
phase-coherent signal
解釋
相位相干信號-
Presents the development of modern signal processing techniques, a new implementation method which realizes quadrature coherent detection by direct sampling of if signal generated during the implementation of traditional quadrature coherent detection with analog elements in the form of two parallel baseband channels where in phase ( i ) and quadrature ( q ) components of ceived if singnal where, the imperfect matching of the separate channels due to the analog elements results in high phase and amplitude which meets the needs for high performance radar signal processing, the elementary principles and the implementation process for each method and concludes from simulation results to compare their features and application conditions that the new approach can satisfy of the requirements of high performance sp
針對近年來提出的通過直接中頻采樣來實現正交相干檢波的方法，分析了其基本實現原理，並用統一的觀點解釋了迄今為止國內外基於此提出的各種實現方法；對每一實現方法的基本原理和實現過程都作了分析，並給出了計算機模擬結果；在此基礎上比較了各方法的性能指標及適應條件.理論分析和模擬結果證明，這一方法完全可以滿足高性能信號處理的要求 -
Based on the similarity of common reflection point trace gathers in one coherent zone, crs stack can focus more energy on the vicinity of the reflector, and therefore can obtain a high signal - to - noise ratio zero offset section by stacking events with the same phase
共反射面疊加利用了鄰近多個共反射點道集的相似性，提高了資料的覆蓋次數，從而壓制了隨機噪聲，增強反射波同相軸的連續性，大幅提高了地震資料的信噪比。 -
This thesis describes a all fiber optic accelerometer based on t - g double beam interferometer, the whole system include a coherent source whose wavelength is 1310nm, a flexural optic fiber disk act as sensing unit, photodetector, piezoelectric ceramic act as a phase modulator and signal processing circuit. the all fiber optic accelerometer described in the paper has many desirable engineering features which include : broad frequency response ; high sensitivity to measurands ; antielectromagnetic interference and small size
本課題研究的是一種基於泰曼-格林（ t - g ）雙光束干涉儀原理的光纖加速度計，系統主要包括：中心波長為1 . 31 m的ld相干光源、起傳感作用的光纖柔性盤、光探測器（ pin ） 、相位調制用的壓電陶瓷以及信號處理系統。 -
The method of broadband coherent interference suppression is presented by using the signal - phase - matching principle. the formulae of estimated signal form coherent interference are derived. the sensor space that must be satisfied is derived
提出了利用信號相位匹配原理的寬帶相干干擾的抵消方法，推導了存在相干干擾時的信號估計公式，推導了陣元間距必須滿足的條件。
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