LEO satellite communication system has the properties of larger power dynamic range, larger and faster changed doppler frequency shift and rapid fluctuation compared to ordinary communication system.
相对于一般的通信系统而言，低轨卫星通信系统具有信号动态范围大，多普勒频移大且变化速度快，信道起伏剧烈等特点。
The working processes of the frequency-tracking phase-shift PWM controlled full bridge power supply load series resonant type DBD ozone generation power system are analyzed.
系统的分析了频率跟踪移相PWM控制全桥供电的串联谐振负载式DBD型臭氧发生器电源系统的工作过程。
The maximum Doppler frequency shift is an important parameter which affects the performance of the OFDM system.
在OFDM系统中，影响其性能的一个重要参数就是最大多普勒频移。
The study shows that the steady locking range is approximately twice than that of master-slave locking system and the frequency of the locked lasers may shift.
研究表明，系统稳定锁定的范围比主—从式锁定系统大了将近一倍，锁定后两激光器的频率可能会发生移动。
In the communication of multiplex system, the DS signal exists Doppler frequency shift for the high dynamic situation of aerocraft.
在复合系统通信中，飞行器的高动态使扩频信号存在多普勒频移。
The electro optic sampling system constructed with the multiple frequency phase shift scanning method was introduced.
分析了倍频移相扫描法的工作原理，介绍了用倍频移相扫描法构成的电光采样测量系统。
The measurements utilize a dual-channel system to detect the relevant frequency shift. The AFP antibody is immobilized to the crystal surface via protein a.
实验采用双通道系统进行频率变化的测定，并采用蛋白a在晶体固定afp抗体。
Aimed at the demand of intelligent data management for UM71 frequency-shift capacitance online measurer, a data support system is designed and developed.
针对UM 71移频电容在线测试仪测量数据智能化管理的要求，设计、开发UM 71移频电容在线测试仪数据支持系统。
At the last, we designed a UM71 track signal parameters detecting system base on TMS320F2812, and implemented part functions of the frequency-shift track signal detecting.
最后我们以TMS320F 2812为核心设计了UM 71轨道信号的参数检测系统，并部分实现了移频轨道信号的检测功能。
In the paper, a novel instantaneous frequency measure method, which is applicable for the frequency measure system of frequency hopping radar, is presented according to the digital phase-shift theory.
本文根据时钟数字移相原理，提出了一种新的瞬时测频方法，适用于捷变频雷达测频系统。
In a mobile environment, ICI is mainly caused by Doppler frequency shift. While, when combined with CDMA, Multiple Access Interference (mai) is another key factor affecting system performance.
在移动环境下，ICI的产生主要由多普勒频移引起，同时，与CDMA结合后，CD MA系统本身的多址干扰(MAI)也是影响系统性能的关键因素。
The carrier phase shift technique based parallel back-to-back PWM converter is used on the direct-drive wind power system, with a switching frequency as low as 1 kHz.
直驱型风力发电系统需要全功率变流器，在现有器件功率水平以及开关频率等诸多因素制约下，变流器直接并联的方式具备结构简单、模块化设计、易扩展的优点。
Test results demonstrate that this system can increase the accuracy of railway frequency-shift signal detection effectively, and has high integration level and reliability.
测试结果表明本系统能有效地提高铁路移频信号检测的准确度，具有高集成度和高可靠性。
With the accelerating of the speed, frequency-shift signal detection system established based on traditional detection method is facing great challenges in China.
随着我国铁路的提速，基于传统检测方法建立的移频信号检测系统面临着极大的考验。
We find that dispersive properties inside the micro-cavity lead to frequency shift of the defect modes. The defect modes can be amplified as optical gain is introduced into system.
另外，当通过复介电常数的虚部引入光学增益后，我们发现缺陷模在增益介质中被放大，其阈值特性和缺陷折射率的密切相关。
An underwater acoustic modem system is built by employing DSP Software based on M-ary frequency-shift-key (MFSK) modulation and non-coherent detection.
采用DSP软件方法，研制了一套基于MFSK调制和非相干能量检测的水声调制解调系统。
An underwater acoustic modem system is built by employing DSP Software based on M-ary frequency-shift-key (MFSK) modulation and non-coherent detection.
采用DSP软件方法，研制了一套基于MFSK调制和非相干能量检测的水声调制解调系统。
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