分别考虑了振幅误差和相位误差两种情形。
The amplitude errors and the phase errors are considered, respectively.
合成孔径声呐成像中,主要通过自聚焦校正剩余相位误差。
In synthetic aperture sonar imaging, the residual phase error is mainly corrected via autofocus.
同步以及运动误差会引入相位误差,本文中提出了相位误差模型。
A phase error model, in which the time synchronization error, frequency synchronization error and motion error are considered, reveals the sources of phase errors.
自聚焦主要由两个重要步骤组成,即相位误差估计和相位误差校正。
Autofocus generally encompasses two distinct steps, i. e. phase error estimation and phase error compensation.
分析了如何划分子测绘带以便分别处理,以抑制高阶相位误差的影响。
The principle of determining the width of sub-swath is discussed to suppress the high order phase error.
分析了基准信号相位发生误差的原因,并给出了相位误差的分布情况。
The reasons to the error of phase of postulate signal are analyzed and the distribution of the drift of phase is given.
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。
This thesis deals with the algorithms of carrier frequency offset and phase error for MPSK signal.
通过改进型的透镜设计,补偿了传统COBRA透镜天线的相位误差。
The improved COBRA lens horn compensated phase error with a modified COBRA lens.
该方法的特点是所用设备简单,载波频率稳定和无相位误差积累影响。
The advantages of this system are that the equipment used is simple, that the carrier frequency is stable and that no affects of phase-error accumulation exist.
对相位移测量技术中的条纹强度量化所引起的相位误差进行了定量研究。
The effect of the quantization of the fringe intensity on the phase error in phase shifting measurement is formulated.
详细分析了过去用硬件测相位误差大的原因,提出软件测相位差的方案。
A new software method of measuring phase is decided for the reason of large error of hardware method, which is analyzed in detail.
文中针对秩一相位估计算法存在的缺陷提出了一种改进的相位误差估计器。
By considering the shortcomings of the ROPE algorithm, an improved phase error estimation algorithm is proposed.
通过设置计数器的K值,可改变电路的最大相位误差及同步建立时间等性能。
The Max phase error and synchronization build time can be changed through the setting of different K.
给出了一种实现此算法的干扰机结构,并提出了减小非线性相位误差的方法。
One of the jammer structures which can realize the algorithm is given and the method for reducing nonlinear phase errors is presented.
方法采用相位敏感方法消除相位误差,保存反转恢复序列中磁化矢量的极性。
Methods The phase sensitive method was used to remove the phase errors and restore the polarity of theinversionrecovery data .
提出了一种基于高阶统计量分析的相位误差估计算法,用于SAR图像自聚焦。
In this paper, a new method of phase errors estimation based on higher order statistics is proposed for SAR imagery autofocus.
通过数值模拟,得到了随机相位误差对不同啁啾量的线性啁啾光纤光栅的影响。
With the help of computer simulation, the effects of random phase errors on the fiber Bragg gratings with different chirps are compared.
针对基于电容分压原理的电子式电压互感器的相位误差,提出了相位补偿方案。
Aiming at the phase error of the electronic voltage transformer (EVT) with capacitive divider, a phase compensation scheme was proposed.
然后分析了时域极坐标算法存在残余视频相位误差的原因及其对成像结果的影响。
Then, the origin and the effect on imaging of time domain polar format algorithm residual video phase error are analyzed.
研究结果表明,可以在了解相位误差分布的情况下,利用统计方法设计最佳接收机。
The simulation results show that it is possible to design optimal receiver by statistical method after finding out the statistical distribution of the phase error.
当相位梯度算法挑选的散射点不是孤立散射点时,导致相位误差估计的准确性下降。
If the scatter selected in phase gradient algorithm(PGA) algorithm is not isolated, the accuracy of the phase error estimation will be degraded.
在实施莫尔条纹细分中,两路信号的相位误差将影响计量光栅的测量位移时的精度。
In morie strip division, the phase error between two signals will affect the measurement precision.
基于雷达回波信号的PGA算法是在时域估计和校正系统相位误差的一种方法,算法较简单。
PGA algorithm based on radar echo signal is one method of estimating and correcting phase error in time domain, and its algorithm is simple to use.
在接收端解调过程中,该频率同步误差会引入一定的相位误差,进而影响下一步的成像处理。
Phase errors is introduced in echo demodulation process because of the frequency synchronization error, and then, the final focus result will be deteriorated.
通过对COAA算法采用变步长迭代提高二次相位误差估计的精度和速度,增强算法的实用性。
To improve the phase error estimation precision and speed, modified iteration step is used, resulting in more effective application of COAA.
三大同步中,相位同步误差直接影响SAR复影像的相位误差,从而影响系统的高程测量精度。
The error of phase synchronization among the three synchronizations will affect the phase error of SAR SLC image directly, and influence the elevation measurement precision sequentially.
研究了相位误差累积因子、信号分量阶次和平均段数等参数对时域同步平均信号幅值的影响规律。
The influencing rules on Time Synchronous averaging signal are achieved by Phase Error Accumulation Factor, component order and averaging number.
秩-相位估计(ROPE)是一种性能较好的相位误差估计器,正被广泛地应用于SAR图像处理。
The rank one phase estimation (ROPE) algorithm is a good estimator for phase error widely used in SAR.
分析结果表明,MS K信号因载波相位误差而造成的误码性能恶化介于BPSK与QPSK之间。
The results illustrate that the deterioration of error performances of MSK signal caused by false carrier phase is between that of BPSK and QPSK.
分析结果表明,MS K信号因载波相位误差而造成的误码性能恶化介于BPSK与QPSK之间。
The results illustrate that the deterioration of error performances of MSK signal caused by false carrier phase is between that of BPSK and QPSK.
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