Frequency offset locking technology is widely applied in laser heterodyne detection and laser radar, which is of great value.
偏频锁定技术广泛应用于激光的外差探测、激光雷达等方面，具有重要应用价值。
Frequency offset tracking is one of the key technologies that affect OFDM systems' performance.
频偏跟踪是影响到OFDM系统性能的关键技术之一。
The relation of frequency Offset to temperature is studied.
研究了机抖激光陀螺抖动偏频量与温度之间的关系。
Numerical analysis and simulations show that this algorithm reduces the computational complexity significantly for the estimation of large frequency offset while maintains a good performance.
理论分析和仿真表明该算法在保证估计精度的同时，可显著降低大频偏估计的计算复杂度。
Carrier frequency offset is one of the key problems in OFDM system.
载波频率偏移是OFDM系统实现的关键问题之一。
The offset of carrier frequency can cause interference between subchannels in a multicarrier system.
对于多载波系统，载波频率的偏移会导致子信道之间产生干扰。
But OFDM is very sensitive to frequency offset and phase noise, so synchronization is the key problem for OFDM system.
但是OFDM技术对频率偏移和相位噪声很敏感，所以同步是OFDM系统中的关键问题。
This paper investigated the timing and frequency offset estimation algorithm of OFDM burst transmission systems.
本文研究OFDM分组传输系统的符号同步与频偏估计算法。
The study shows that the algorithm can complete frequency offset tracking in AWGN channel and multipath fading channel.
研究表明，该算法既能在AWGN信道中也能在多径衰落信道中完成频偏跟踪工作。
Police traffic radar USES the theory of Doppler speed detection to measure the offset of the frequency.
雷达测速仪是利用多普勒测速原理，获得运动目标的频率偏移信号。
In satellite mobile communications, Doppler frequency offset is a negative factor that couldn't be neglected.
在卫星移动通信中，多普勒频偏是一个不能忽视的消极因素。
The synchronization techniques for burst packet transmission mode OFDM systems is studied, including timing, frequency offset estimation and channel estimation.
本文主要研究适用于突发OFDM传输系统的同步技术，包括定时、频偏估计和信道估计。
In this paper, the pilot subcarriers on two consecutive OFDM symbols are utilized for joint frequency offset correction and channel estimation.
基于连续OFDM符号上的导频子载波，给出了联合频率偏移纠正和信道估计方法。
The estimation of the coarse frequency offset and timing is one of the key technology in the uplink multiuser OFDM system.
上行链路中的粗频偏及定时估计是多用户OFDM系统的关键技术之一。
With increasing of Doppler frequency offset, status of channel doesn′t hold stabilization for long and whole correlation of false codes hasn′t satisfied require of channel estimation.
随着多普勒频偏的增大，信道状况无法长时间保持平稳，伪码的完整相关已经不能满足信道估计的要求。
However, OFDM is sensitive to timing and frequency offset, so how to overcome this limitation is one of the main directions of the research on OFDM.
但OFDM技术对定时和频率偏移敏感，如何克服这个缺点是OFDM技术研究的主要方向之一。
Due to the obvious impact of frequency offset on PN sequences, based on the FH sequence, a symbol synchronization scheme with a conjugate symmetric training sequence is proposed.
针对频偏对PN序列相关性影响比较明显的问题，提出了一种利用FH序列构造的具有共轭对称性质的训练序列进行符号同步的方案。
This thesis deals with the algorithms of carrier frequency offset and phase error for MPSK signal.
本文主要研究MPSK信号的载波频偏和相位误差的估计和恢复算法。
The emphasis is put on the effect of frequency offset and partial correlation of GOLD sequence on parameters.
主要考虑了频偏和GOLD码部分相关对参数选择的影响。
Doppler effect causes not only carrier frequency offset, but also symbol expansion or compression for wideband acoustic communication signal.
多普勒不仅造成宽带水声通信信号的载波频率偏移，而且引起码元符号的展宽或压缩。
The research contents mainly consist of symbol rate estimation, carrier frequency offset estimation, modulation recognition and blind demodulation.
研究内容主要包括：符号率估计、载波频偏估计、调制方式识别以及盲解调等。
OFDM (Orthogonal frequency Division Multiplexing) systems are sensitive to frequency offset, which will degenerate the system performance.
正交频分复用(OFDM)通信系统对频率偏移比较敏感，容易导致系统性能急剧下降。
To reduce the impact of carrier frequency offset in OFDM system, this thesis designs a new carrier frequency offset estimation scheme for OFDM system.
为了减小正交频分复用系统受频率偏差的影响，在OFDM系统中设计了一种新的载波频偏估计算法。
So frequency offset must be removed prior to demodulation.
因此，解调前必须去除频率偏差。
One of the principal disadvantage of OFDM is sensitivity to frequency offset.
OFDM的主要缺点是对载波频率偏差很敏感。
How to eliminate the two problems is the main task of the research of OFDM. In this thesis, we mainly discuss the problem of frequency offset estimation.
如何克服这两个问题是OFDM技术研究的主要方向之一，本文主要是研究OFDM技术中的频率偏差估计问题。
Through changing some parameters such as type, frequency, amplitude, offset, and so on, it can get the amplitude eigenvalue that corresponding with the cycle signal and the stochastic signal.
它可以通过改变信号的类型、频率、幅值、偏移量等参数值求取对应的周期信号和随机信号的幅值特征值。
The orthogonal multicarrier modulation, which is the main character of OFDM, determines that it is very sensitive to both timing synchronization error and carrier frequency offset.
OFDM系统自身的正交多载波调制特点，决定了其对定时误差和载波频率偏差十分敏感。
The waveform is generated by MAX038. It is very convenient to adjust the frequency, duty cycle and offset voltage of the waveform by changing parameters of the corresponding pins of the chip.
使用MAX038波形发生芯片产生波形，通过修改MAX038相应引脚的参数方便地实现输出波形的频率和占空比及偏置电压参数的调节。
Gradual rigidity leaf spring has variable rigidity feature, that causes little or nearly no change on offset frequency.
渐变刚度钢板弹簧具有刚度可变的特性，可使偏频变化很小或接近等频特性。
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