查询词典 homodyne

This paper first reviewes the development history of receiver from simple to complex process, and compares with the characteristic of superheterodyne receiver,digital IF receiver and homodyne receiver.

本论文首先对无线电接收机从简单到复杂的过程回顾了接收机的发展历史，对超外差、数字中频和零中频接收机的特性进行了比较。

Analyses of measurement error of self-heterodyne/homodyne methods have been studied.

对延迟自外差／零差激光线宽测量方法进行了误差分析。

Using the way of homodyne coherent detection, a fiber laser Doppler vibrometer is designed and completed.

采用零差的相干探测方式，设计并实现了一套光纤结构的激光多普勒振动计。

Receiver 234 may be a heterodyne or a homodyne receiver may include a low intermediate frequency architecture.

接收机234可以是可包括低中频结构的外差或零差接收机。

The dissertation discusses the principle of interfereometer optic-fiber accelerometer using phase-generated-carrier and the homodyne detection technology in details.

论文详细阐述了相位载波干涉型光纤加速度计的基本原理和PGC零差检测技术。

In order to achieve the detection of amplitude and phase of the optical signal at the same time,a new homodyne coherent detection system was designed,including the scheme of optical align design and the realization of receiver data processing.

陈楚，黄春晖福州大学物理与信息工程学院，福建福州 350002为实现光信号幅度与相位的同时检测，设计了一种新型的零差相干检测系统，包括光路实现方案的设计和接收端数据处理的实现。

In this dissertation, the characteristics of Er〓 doped fiber ring resonators below and upper threshold, as well as homodyne method for measuring the laser's linewidth, is systemically analyzed by both theoretical and experimental ways.

本文对掺铒光纤环形腔在阈值以下、阈值以上多种工作状态中的特性及其与之紧密相关的零拍激光线宽测量方法，进行了系统性的实验研究和相关的理论分析。

The output central wavelength of fiber laser is about 1550nm.At the same time, the paper choose homodyne method for measuring laser linewidth.

本文的主要工作成果：(1)本文从理论出发研究光纤激光器，并制作了单纵模光纤激光器。

Using the autocorrelation function, the principal of homodyne method is explored. The relationship between delay time induced by delay fiber and characteristics of additive frequency-domain fluctuation affixed on homodyne beat noise photoelectric-current spectrum are intensively analyzed.

一、利用自相关函数研究了零拍法测量激光线宽的原理，重点考察了零拍光电流谱线上所附加的频域周期性波动，确定了该波动的频域周期与光纤延时线所产生的时延成反比。

Combining coherently beams from 19 Yb-doped fiber lasers using homodyne method to cntrol and tune phase,100kW of output power will be obtained.

标 签 非稳腔弯曲损耗大芯径掺镱光纤零差法 unstable cavity large core Yb-doped fiber laser homodyne method

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。