1) phase coding
相位编码
1.
In order to further improve the precision and efficiency of prestack depth algorithm, the paper introduced a relief surface-based prestack depth migration algorithm of synthetic shot records, in which the basic idea is to use phase coding method to produce synthetic shot records, realizing prestack depth migration of mu.
为了进一步提高叠前深度算法的精度和效率,本文介绍一种基于起伏地表的合成炮叠前深度偏移方法,其基本思路是采用相位编码方法产生合成炮,实现多炮叠前深度偏移,提高了计算效率;用波动方程波场延拓取代浅地表的高程静校正,提高了偏移成像精度。
2.
Phase coding patterns of MPSK (multiple phase shift keying) are recogniged based on the phase mutation values which are determined by computing the error energy of adjacent code elements in MPSK.
通过计算多相编码信号（ＭＰＳＫ）相邻码元间的误差能量的方法来确定相位突变值，从而达到对ＭＰＳＫ信号相位编码规律的识别。
3.
A new quantum key distribution scheme is proposed to realize both phase coding and time coding based on two unbalanced Mach-Zehnder interferometers.
提出了一种在双马赫-曾德尔干涉仪量子保密通信系统上同时实现时间编码和相位编码的混合量子密钥分发方案。
2) phase encoding
相位编码
1.
A new method for prestack depth migration of areal shot records with phase encoding;
一种新的相位编码面炮记录叠前深度偏移方法
2.
A new OCDM technology of QPSK coherent phase encoding in time domain;
QPSK时域相干相位编码的OCDM新技术
3.
In this paper, an encoding method is proposed for improving the resolution of rotary encoder-phase encoding method.
本论文对输出信号为正弦信号的增量式编码器提出一种细分方法—相位编码细分方法,从原理上进行了深入的分析,井设计了硬件电路。
3) phase code
相位编码
1.
A method of phase code named SZ code to mitigate range ambiguity applied on a pulse Doppler weather radar is introduced.
描述一种被称为SZ相位编码的解距离模糊方法在脉冲多普勒气象雷达中的应用。
2.
An improvement on linearity stepped frequency(SF) radar waveforms——The phase coded stepped frequency(PCSF) radar waveform was proposed.
提出了脉内相位编码脉间频率步进(phase coded stepped frequency,PCSF)雷达信号,这是对一般脉冲线性频率步进(stepped frequency,SF)信号的改进。
3.
For biphase code and Taylor quadriphase code signal,when the method of traditional frequency domain suppression is adopted,the RMS of echo signal at any point may be different.
相位编码信号是在雷达中广泛使用的一种脉冲压缩波形。
4) phase-coded
相位编码
1.
Based on research on interference technique of pulse compression radar, this paper depicts the mathematical model of linear frequency modulation pulse compression radar and phase-coded radar, the frequency-shift interference models are also constructed, besides, the effect of interference is analyzed.
在对脉冲压缩雷达干扰技术进行仿真研究的基础上,描述了线性调频脉冲压缩雷达和相位编码雷达的数学模型,建立了对线性调频脉冲压缩雷达和相位编码雷达的移频干扰模型,分析了干扰对雷达系统的影响并对此进行了仿真研究。
2.
A compound modulation signal composed of stepped-frequency(SF) and phase-coded(PC) signal for low probability intercept(LPI) radar is given.
针对低截获概率雷达设计了一种相位编码和步进频率复合调制信号,这种复合信号兼有相位编码信号和步进频率信号的优点,又弥补了各自的缺点。
3.
BBADCP adopts phase-coded signal and estimates the Doppler frequency with covariance technology to make it having very high precision but accompanying velocity ambiguity in current velocity measurement.
宽带声学多普勒海流剖面仪采用重复相位编码信号和复协方差方法进行频移量的估计。
5) phase coded
相位编码
1.
The signal characteristics of Phase coded radar, including spectral expansion, pulse compression, low peak power, distance Dopple coupling and Doppler sensitivity etc.
介绍相位编码雷达信号的各种信号特征 ,如频谱扩展、脉冲压缩、低峰值功率、距离 -多普勒耦合、多普勒敏感等 ,分析这些特点对电子侦察、干扰的影响。
2.
Radar waveforms that can using pulse compression technology are linear frequency modulation,nonlinear frequency modulation,phase coded pulse.
采用脉冲压缩技术的雷达信号形式主要有线性调频、相位编码和非线性调频信号等。
补充资料：相位编码
相位编码
磁共振成像术语。磁共振成像中，为确定所选层面内自旋的位置，90°射频脉冲后间隔一段时间，在与层面选择梯度垂直的方向再施加一个梯度磁场(相位编码梯度)，使沿该梯度方向自旋的相对相位发生变化。磁场越强，自旋进动频率越快，因此较强磁场中自旋偏转的角度比较弱磁场中自旋偏转的角度要大。经层面选择后，相位编码和梯度编码可共同确定层面中自旋的位置。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条