设计了使用永磁频差电动机的自动平衡头。
An automatic balancing head is introduced, in which a PM frequency difference motor is used.
由于外差或频差效应，能够得到多普勒频率。
The Doppler frequency can be obtained as a heterodyne or beat effect.
接着，本文还就到达频差定位系统进行了研究。
Secondly, the Frequency Difference of Arrival (FDOA) Location System has b.
该算法利用并行方法估计有频差时的载波相位。
Firstly the carrier phase with frequency offset is obtained with a parallel method.
提出一种适合软件无线电的载波相位和频差估计算法。
An algorithm suitable for carrier phase and frequency offset estimation in software radio is proposed.
标签LFMCW雷达非线性剩余频差过零检测周期图。
LFMCW radar nonlinear residual frequency errors zero crossing detection periodogram.
在数字通信系统中，发送端和接收端的载波往往存在一定的频差。
In a digital communication system, usually there exist carrier frequency offset between the sender and the receiver.
本文通过叶片模态试验获得叶片失谐频差，进而获得叶片失谐参数。
It can obtain mistuned frequency difference of blades by a modal test, and then get the mistuned parameters.
在此基础上，基于MMSE准则计算载波相位的轨迹，得到频差和初始相位。
Then the phase trajectory is estimated based on MMSE criterion, and the frequency offset and initial phase can be achieved.
结果表明，用该算法可以精确估计载波相位和频差，有效地降低系统的误码率。
The simulation for QPSK shows that the algorithm can estimate the carrier phase and frequency offset accurately and reduce the system BER effectively.
为避免传统光强差稳频方式的缺陷，提出了四频差动激光陀螺小抖动稳频方法。
To overcome the disadvantages of light intensity difference frequency stabilization, the dithering frequency stabilization for four frequency differential laser gyro is studied in this paper.
因而该方法具备了相差法检测灵敏度高和频差法受被测流体声速变化影响小的特点。
So this technique has high sensitivity which phase difference method has and is hardly affected by the variation of the sound speed of the fluid, just as frequency difference method is .
小管径频差法超声波流量计的测量精度受各种因素的影响，因而获得较高精度比较困难。
The precision of the ultrasonic flowmeter with small tube diameter and frequency difference method is affected by several factors, so to gain more accuracy is difficult.
在接收端主要研究了频差校准、位同步和均衡等关键技术，其中重点放在了均衡技术上。
On the receiving end, mainly studies the key technologies of Calibration frequency difference, Synchronization and adaptive equalization, of which adaptive equalization has been emphasized the most.
提出了一种频差估计的新算法，该算法结合观测序列的周期图和自相关函数进行频率估值。
A simple algorithm for frequency offset estimation is proposed, which estimates the frequency offset with the periodogram and the correlation function of the observation samples.
计算了规则波和波群中系泊浮筒漂移运动的时间历程，讨论了其运动与波高、频差的关系。
The time history of drift motion of mooring buoy in regular wave and wave group is calculated. The relation between drift motion and wave height or difference of frequency is discussed.
可估计的载波频差范围是大的，约为符号率的，并且算法所需的计算负载非常低，适合数字硬件实现。
Its estimation range is large, about of the symbol rate, while the algorithm proposed requires a very low computational load and is very easy to implement with digital hardware.
该方法将GPS作为频率基准，间接得到了铷钟相对于与GPS的频差，避免了使用昂贵的高分辨计数器。
In the method, GPS is looked on as reference and the frequency difference between the Rb clock and GPS may be obtained indirectly, and the expensive high-resolution counter may not be needed.
采用集成电路实现舰船电站自动频载调节，从理论上分析了并联运行机组间的有功功率分配以及频差调节原理。
In this paper, we theoretically analyses the distribution of the active power and the regulation principle of the frequency differences between the parallel operating generators.
本文中所研究的基于单片机的自准同期并网装置能够精确的测量出两侧的电压、频率、频差以及相位角的变化。
The Quasi-synchronizing parallel devices based on SCM can measure the change of the voltage, frequency and different phase in this article researched.
避免由于压差、频差和相角差太大，使的合闸时，发电机组电枢绕组电流过大，对发电机组联轴系统产生冲击。
The phase and frequency between the system and generator must be small enough to ensure minor current in the armature winding of generator, avoiding the impact to the coupling shaft.
仿真试验表明，该方法能够精确地估计调频非线性剩余频差，具有较高的运算效率，并给出了一个实际试验结果。
Simulations demonstrate that this method provides an accurate estimation of nonlinear residual frequency errors with high computation efficiency. An experimental result was also given.
笔者采用数字手段去测取超声波信号的频差，通过频差法可得出流体的平均速度，进而获得高含沙量流体的流量。
A digital signal processing way is established to obtain ultrasonic signal frequency shift in the test of high sand content fluid flow.
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.
本文介绍一种加快频率合成器跳频速度的新方法，该方法能确保环路的初始频差在快捕带以内，使环路迅速捕获锁定。
This paper will discuss a new way to speed frequency hopping of frequency synthesizer. This way will assure that loop circult is locked in a very short time.
利用计算机仿真方法详细分析不同噪声环境下，载波频差对码跟踪环路输出、码相位差对载波跟踪环路等因素的影响；
Then the influence of carrier frequency error on code loop and influence of code phase error on carrier loop in different noise are discussed in simulation.
本文研究了收发双方存在载波频差时利用累积量实现调制分类这一实际问题，提出一种改进的基于累积量的信号分类算法。
An improved algorithm for classification of MDPSK signals based on cumulants is presented in this paper, which is robust to the error of the carrier synchronization.
分析了在相同数据和随机数据扩频调制条件下接收信号信噪比估计的计算方法，并对于有频差情况下的计算方法进行了说明。
The two cases of pilot modulated data and random modulated data were theoretically analyzed, and the calculating method was also presented when the frequency offset existed.
要求电网与发电机组在允许的压差、频差条件下，在导前合闸角到来时，发出并网指令，使发电机组平滑无冲击的并入到系统电网中。
When the phase of closing breaker is coming, the device sends out the dictation to put the dynamo into the power system smoothly and rapidly.
要求电网与发电机组在允许的压差、频差条件下，在导前合闸角到来时，发出并网指令，使发电机组平滑无冲击的并入到系统电网中。
When the phase of closing breaker is coming, the device sends out the dictation to put the dynamo into the power system smoothly and rapidly.
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