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1)  PSK sequence
相位编码序列
1.
How to get the rules of phase shifting from the relative accumulation of single pulses is introduced first, and on the basis of which an approach to restoring PSK sequence is derived.
通过对PSK信号相位特性的分析,采用相关积累的方法充分利用单个脉冲所提供的相位跳变信息,成功提取出PSK信号相位跳变规律,在此基础上进行了相位编码序列的恢复。
2.
How to get the rules of phase-shifting from the coherent integration of single pulse is first introduced, on the basis of which an approach to restoring PSK sequence is derived.
文章首先研究了如何通过单脉冲相关积累从PSK信号中提取相位跳变规律,在此基础上给出了相位编码序列恢复方法。
2)  Coding sequence
编码序列
1.
Fourier spectra of 120 short coding sequences (<1 200 bp) show that not all coding sequences are characterized by 3 base periodicity.
对 12 0个较短编码序列 (<12 0 0bp)的Fourier频谱进行分析表明 ,3 碱基周期性在短编码序列中并不是绝对存在的 。
2.
The coding sequence of glial cell linederived neurotrophic factor (GDNF) was amplified from human genomic DNA by PCR method.
用PCR方法从人基因组DNA中扩增出胶质细胞源神经营养因子(GDNF)的编码序列,使它在E。
3.
In this paper,Drosophila melanogaster chromosomes intron and coding sequence as the study.
本文以果蝇染色体的内含子和编码序列作为研究对象,用信息参数D2分析两类序列沿着染色体的分布规律,并用多项式拟合分析染色体各类序列沿染色体的统计分布特征,分析D2参数的平均值在不同的染色体臂的分布特征。
3)  coding/noncoding sequences
编码/非编码序列
4)  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。
5)  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。
6)  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。
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参考词条