The remote sensing satellite earth station is composed by antenna, feed subsystem , servo subsystem, receiver, station manage subsystem, modulator, demodulator, recorder and quick view equipment.

遥感卫星地面站主要由天馈线、伺服分系统、接收分系统、站控分系统、调制器、解调器、记录设备和快视设备等构成。

This paper designed a full digital modulator and a full digital demodulator for the millimeter wave communication machine based on the soft radio theory.

本文利用软件无线电的思想为毫米波保密通信机设计了一个全数字的调制解调器。

Digital and analog systems need an interpreter in order to understand each other. and that's where the modem (short for Modulator DEModulator) comes.

数字系统与模拟系统之间需要有一个转换器，以便使两种系统相互理解。调制解调器的作用就在于此。

The paper provides a new thought and solution based on the research of the IF modulator and demodulator of Software Radio.

本文在对软件无线电中频调制解调器研究的基础上，提出了一种新的思路和解决方法。

The products include the head end transmission equipments as adjacent modulator, demodulator, mixer;

邻频调制器、解调器、混合器等前端传输设备；

High stability PLL-modulator and high sensitivity receiving demodulator are introduced.

介绍了高稳定锁相调制和高灵敏度的接收解调。

Realizes V. 29 signal basic modulate and demodulate procedure which includes square root raised cosine rolling-off shaping filter and orthogonal channel signal modulator and demodulator.

分别实现了V．29信号基本调制解调过程，包括平方根升余弦滚降脉冲成形技术的滤波器实现，以及对信号的正交调制与解调过程。