heterodyne receiver

Atmospheric Coherence length and its effects on a laser heterodyne receiver

大气相干长度及其对激光外差接收机的影响

Lastly , the best receiving aperture of a laser heterodyne receiver is discussed briefly .

最后简单讨论了激光外差接收机的最佳接收口径。

An ECE measurement system with heterodyne receiver on the HT-6B Tokamak

HT－6B上的ECE外差接收系统

The diagnosis of Tokamak electron cyclotron radiation by GaAs Schottky diode heterodyne receiver

GaAs肖特基二极管外差接收系统用于托卡马克电子回旋辐射的诊断

Installation and Debugging for Supersonic Heterodyne Receiver

超外差式收音机安装调试指导

As the key techniques in Synthetic Aperture Ladar ( SAL ), balanced optical heterodyne receiver technology is studied in this paper .

本文对合成孔径激光雷达（SyntheticApertureLadar，简称SAL）中光外差平衡接收技术进行了研究。

Supersonic heterodyne receiver Com parison of the Traveling-wave Ultrasonic Motor with the Ultrasonic Motor Using Longitudinal and Torsional Vibration Model

超声波外差式接收机行波型超声电机与纵扭型超声电机的比较

A set of 5-channel heterodyne receiver system for measuring the ECE signals of the HT-6B tokamak plasma is described .

本文介绍了在HT－6B上使用的一套五道外差接收机系统，它用于该装置的ECE信号测量。

This paper introduces the developing trends of radio receiver , analyses the demerits of traditional heterodyne receiver and the developing prospect of new-type zero IF receiver .

介绍了无线接收机的发展，分析了传统外差式接收机的弊端和新型零中频接收机的发展前景。

This dissertation chooses received directly system , at the same time makes the simple introduction to the heterodyne receiver , and then carries on the preliminary analysis on optical antenna .

本文选用的是直接检测接收机的实现方案，同时对外差接收机也做了简单介绍，并对光学天线的类型和各自的结构特点进行了初步的分析。

The results indicate that the effects of atmospheric turbulence on the heterodyne receiver at a horizontal path are significant , but the effects at a slant path are much smaller .

结果表明大气湍流对水平光程上的光学外差接收机的影响很大，而在斜程上湍流的影响要小得多。

To reduce noise figure and improve receiver sensitivity , the heterodyne receiver model have become more widely available in the communication system . The rejection to image frequency interference has become the last problem for a low-noise receiver .

为了降低系统噪声系数，提高系统接收灵敏度，超外差式的接收机模型在越来越多的通信系统中被广泛的使用，实现整机低噪声、抗干扰的最后难题就是对镜频干扰的抑制。

Secondly , the paper analyzes the basic structure of several receivers , including heterodyne receiver , zero-IF receiver , low-IF receiver and mirror suppression receiver . Then through analyzing their respective strengths and weaknesses and the actual needs , we select the heterodyne receiver structure .

第二章分析了接收机的几种基本结构，包括超外差接收机、零中频接收机、低中频接收机和镜像抑制接收机，并通过分析其各自的优缺点和实际需求选择了超外差接收机结构。

Study on Polarization Independent Heterodyne Balanced Receiver

与偏振无关的相干光外差平衡接收技术研究

The set is composed of two PZT tilted 45 ° relative to each other and a microcomputer . The feedback signal is obtained by sampling the IF envelope of twice heterodyne at receiver .

控制装置由两个互成45°的PZT与单片微机构成，反馈信号由接收端二次外差中频包络采样获得。