modulation system的例句大全

The response speed of the micro deformable mirrors is rapid, which can meet the needs the of the real time modulation of the adaptive optical system.

微变形镜的响应速度快，能够很好地满足自适应光学实时动态校正的要求。

Analysis and Compensation of Nonlinear Modulation Factor of FM CW Ranging System

FM-CW测距系统调频非线性作用的分析和补偿

In the area of aerospace telemetry, Pulse Code Modulation/ Frequency Modulation ( PCM/ FM) system is one of the main plans in strategic weapons and rockets because of its high noise resistance, high flexibility.

在航天遥测领域中，PCM/FM传输体制抗噪声性能强、灵活性高，是国内外战略武器和火箭等的主要遥测手段。

Through the experimental test on integration of modulation circuit and demodulation circuit, it indicates that there is high signal-to-noise ratio in the system.

通过对调制驱动电路和接收解调电路组成的激光通信链路的实验测试，表明所设计的光端机具有良好的信噪比。

Modulation of BOC for Galileo system using chaotic CDMA spreading spectrum

基于混沌扩频CDMA的伽利略卫星定位系统BOC调制技术

A new current detection method is introduced aimed at lower bridge arm modulation when motor is operating at six states. Thirdly, system hardware and software is designed and debugged bases on theory results.

针对三相六拍两两导通且下桥臂开关管调制方式提出了新型电流检测方案。再次，针对理论分析的结果，对系统硬件电路及软件代码进行了设计与调试。

The modulation of Galileo Satellite Navigation System's signal is analyzed in this paper, especially, the basic principle of the BOC and ALTBOC is analyzed in detail.

总结了伽利略卫星导航系统各信号的信号调制方式、各频段的信号调制体制，特别是BOC调制及ALTBOC调制技术的基本原理。

In conventional single-carrier modulation, the system complexity will increase greatly due to the multi-taps equalizer used in high data rate wireless communication.

因此在利用传统的单载波调制方式进行高速率无线通信时需使用多抽头均衡器，从而使系统的复杂度大大增加。

A New Integrated Spread-Spectrum System of Communication and Wireless Location with Eight Phases Space Time Modulation

一种新型八相时空调制扩频通信定位综合系统

FPGA Design of OFDM Modulation Symbol Generator Based on DAB System

一种数字音频广播系统的正交频分复用调制符号生成器的FPGA设计

Designing of Real-Time Data Collection System for Digital Amplitude Modulation Broadcast Transmitter in 10 KW Medium Wave

10kW中波数字调幅广播发射机的实时数据采集系统设计

In communication system, channel encoding is an efficient way to improve reliability, and on the other hand, modulation is a necessary step to turn digital signal into signal which can transmit easier in the channel.

在通信系统中，信道编码是提高系统可靠性的有力手段，调制是把数字基带信号转换为便于信道传输的信号的必要步骤。

Logarithmic Transformation to Joint Power Spectrum can enhance the intensity of high frequency component, improve the modulation degree, weigh down the zero-order diffraction, and increase the recognition efficiency of joint transform correlation system.

为增强联合功率谱的高频成分，改善其调制程度，可对功率谱进行对数变换，从而有效保留更多的高频成份，压低零级衍射光斑，提高联合变换相关器的识别能力。

Under a certain deliver distance and the light power, the different sub-carries number to exist a best optical modulation index, making the system's carrier-to-noise ratio biggest.

一定的传输距离和发射光功率情况下，不同的子载波数存在一个最佳的光调制指数，使得系统载噪比最大；

The analytic results on system CNR ( Carrier-Noise-Rate) and the computer simulation show that the system CNR can be improved greatly by utilizing the wavelength controlling and increasing the optical modulation index.

仿真结果表明，通过实施波长控制技术和增加光调制指数等措施，可以有效提高系统载噪比。

Furthermore, the expression of stationary bit error rate of system output corresponding to equiprobability quaternary pulse amplitude modulation ( PAM) input signals was deduced.

给出了当输入信号为等概率的四进制脉冲幅值调制（PAM）时，系统输出理论渐近误码率计算公式。

Application Research of Pulse Width Modulation Technology on Hydraulic System

液压脉冲宽度调制技术的应用研究

Pulse width modulation implemented in position servo system of mobile antenna

移动天线位置伺服系统的正弦波脉宽调制方法

The system can be applied to CATV shell or modulation transmission module of cable modem.

本系统可以用于有线电视信道中各种数字传输方式的研究，稍加修改也可以作为有线电视数字机顶盒或电缆modem系统的调制发送模块。

Pulse width modulation is difficulties and focus in the inverter control system. This task in-depth study of several digital SPWM generation methods ( including the tangent approximation sampling method and the secant approximation sampling method).

脉冲宽度调制技术是逆变控制系统设计的难点，本课题深入研究了几种SPWM的数字化生成方法（包括切线逼近采样法和割线逼近采样法）。