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- amplitude phase errors 幅相误差
- This shows that the amplitude and phase error has important effect on ASLC. 理论分析和仿真结果表明幅相误差对自适应旁瓣对消系统具有重要的影响,必须加以克服。
- Chapter 2 discusses digital beamforming (DBF) of phased array radar and the amplitude and phase errors. 第二章介绍了相控阵雷达的数字波束形成,并对接收机的幅相误差进行了分析。
- The results show that the phase error of the vector measurement is zero, and amplitude error can be eliminated, and the error caused by D/A is much lower than a LBS. 结果证明,相位测量的理论误差为零,幅度测量的理论误差可用修正系数消除,且D/A有限字长引起的误差远小于一个LBS。
- The effect of amplitude distortion, phase distortion, a mplitude and phase error on the performance of receiver is discussed in this pap er, and a method of digital correction is proposed. 仔细分析了幅度失真、相位失真、幅相不一致性等对接收机性能的影响,提出了数字域校正的方法。通过计算机仿真,表明了该方法的可行性。
- Unbalance of amplitude phase in radar receiving channels and mismatch of frequency characteristic within channel band may affect the sidelobc level and output signal-to-noise(SN)ratio of digital beam forming(DBF)seriously. 雷达接收通道间的幅相不一致与通道带内频率特性失配对DBF(数字波束形成)的副瓣电平及输出信噪比有很大影响。
- As one of the key techniques in inverse synthetic radar(ISAR),autofocus is to eliminate the phase errors caused by the target radial motion. 自聚焦是ISAR成像中的一项关键技术,其目的是消除目标和雷达的径向运动引起的相位误差。
- In this paper, a new method of phase errors estimation based on higher order statistics is proposed for SAR imagery autofocus. 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。
- Abstract: The effects of undulator phase errors on the Free Electron Laser small signal gain is analyzed and discussed. 摘 要: 对波荡器位相误差对自由电子激光小信号增益的影响进行了分析讨论。
- Besides, this paper presents some means to decrease the interchannel phase errors via system hardwares and imaging algorithm. 同时给出了在系统硬件方面以及成像处理中减小通道间相位误差的一些措施。
- Methods The phase sensitive method was used to remove the phase errors and restore the polarity of theinversionrecovery data . 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。
- Computer simulation results show that the proposed method can reduce the array phase errors and improve the DOA estimation performance of MUSIC algorithm. 计算机仿真结果表明,该方法可以明显地减小阵列相位误差对MUSIC算法DOA估计结果的影响。
- APSK Amplitude Phase Shift Keying 幅相键控
- This paper presents the effect of carrier phase error on MC-CDMA performance in downlink mobile communications. 该文对下行无线通信信道中MC-CDMA系统的载波误差性能进行了研究。
- The phase error between the segments was extracted from the interferograms mismatching. 子镜间相位误差通过干涉图形间的不匹配性进行提取。
- Undulator rms phase error is expressed as function of the magnet peak field distribution. 摘 要 :给出了波荡器位相误差的函数式, 可由磁场峰值分布直接计算波荡器位相均方根误差。
- The gain and phase error calibration for Linear Equi-spaced Arrays (LEA) is considered in this paper. 该文研究均匀直线阵幅度和相位误差校正问题。
- By means of shimming,the filed integral and phase error can be reduced as much as possible. 磁场的垫补和测量方法由原来的整体测量改为分段进行,垫补的使用使各段积分场及位相误差都尽可能小。
- The effect of the quantization of the fringe intensity on the phase error in phase shifting measurement is formulated. 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。
- Sound waves are measured by their amplitude. 声波是根据其振幅来测量的。