该方法较之传统方法具有在线载波检测、断点位置确定精度较高、操作简便等优点。
The new system features with on line carrier detection, higher accuracy, and easier operation as compared with the traditional one.
首先是“载波感测”。以太网站先检查“以太”是否空载,如果检测到信号了就排队等候自己的发送机会。
First of all, Ethernet stations check to see if the ether is idle (carrier sense) and wait if they sense a signal.
载波相位周跳检测与修复是实现GPS高精度定位的难点之一。
Detecting and repairing GPS carrier phase cycle skip is a challenge for precise GPS position.
理论分析和仿真实验证明,在负信噪比条件下该方法可有效提高对DS-SS信号载波的检测能力。
Then we detect and estimate the carrier frequency of negative SNR DS-SS Signal have done. Theoretic analysis and simulation prove the validity of the arithmetic.
探讨如何进行射频载波抵消以及检测放大器互调失真信号。
How to cancel carrier and detect the intermodulation distortion signal of power amplifier will be discussed.
为改善传感器的性能,微弱光强信号的检测需要载波调制和双光路补偿。
To improve its performance, a carrier modulation and double light route compensation are necessary for detecting faint optical power signals.
数字化相位生成载波(PGC)方法是实现光纤干涉仪大动态范围、高精度信号检测的主要手段。
Digital phase generated carrier (PGC) is the key method for larger dynamic and high sensitivity detection of optical fiber interferometers.
本文分析了振铃检测、DTMF编解码和电力线载波的原理及实现方案。
This paper analyzes the ring detection, DTMF codec and power line carrier and the realization of the principle of the program.
在空间载波条纹位相检测中,滤波函数的选择对解调相位的精度和速度起着决定性的作用。
The property of digital filters for spatial phase detection significantly influences the accuracy and the speed of phase demodulation.
方案中提出了:相关搜索、FFT检测信号载波的方法,解决了低信噪比、大频差条件下扩频码的同步捕获难题;
The method was Correlate search and FFT carrier detection, which could solve the problem of the capture of the spread spectrum code under the condition of low SNR and big frequency offset.
用于检测隐藏活动目标的超宽带雷达就是基于基带无载波极窄脉冲的,有着广阔的应用前景。
Ultra wideband radar, using the promising and novel radio technology in detecting hidden targets, has a broad application prospect.
数字电视信号的调制是用载波信号的某些离散状态来表征所传送的信息,在接收端只对载波信号的离散调制参量进行检测。
Digital TV signal modulation is a message transmitting method which is expressed by some discrete states in carrier wave. Only carrier wave modulating parameter is detected.
深入研究了周跳检测与修复的原理,并且基于载波相位三差方程进行周跳检测与修复算法的研究。
With the help of carrier phase triple differential observation, the theory of detecting and recovering cycle slips is researched and an algorithm is developed.
本发明涉及到工业控制领域,尤其涉及到一种运用电力线载波通讯模块传递报警信息的气体检测报警系统。
The invention relates to the field of industrial control, in particular to a gas detection alarm system using power line carrier communicating module to transfer alarm information.
载波恢复中高精度的频偏检测与跟踪是高性能锁相位环路实现的必要条件。
High precise measuring and tracking of carrier frequency-deviation is necessary to the realization of a high performance phase locked loop in carrier recovery.
PSK非相干解调法将经延时半个载波周期的接收信号与原接收信号相加,检测出两相邻码元载波相位变化情况,从而解调出数字信息。
Non coherent demodulation for 2PSK detects relation of carrier wave phase of the interval symbol by the (half period of carrier wave) delay and the adder, then the data is demodulated.
主要分析和研究了该干涉仪的泄漏检测原理、泄漏源定位方法以及载波对传感器性能的影响。
The measuring principle and the leaking source location method for the detection system are analyzed, and the influence of the carrier on the performance of the system is researched.
对适用于干涉型光纤水声传感器阵列的PGC(相位载波)调制—解调单元光纤水声传感器进行了研究,分析得出了光纤水声传感器PGC检测新的带宽要求;
This paper presents the research on the interferometric fiber-optic sensor's PGC scheme which is suitable for the construction of the acoustic sensor array.
对适用于干涉型光纤水声传感器阵列的PGC(相位载波)调制—解调单元光纤水声传感器进行了研究,分析得出了光纤水声传感器PGC检测新的带宽要求;
This paper presents the research on the interferometric fiber-optic sensor's PGC scheme which is suitable for the construction of the acoustic sensor array.
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