查询词典 noncoherent

Up to now, the performance analysis of noncoherent space-frequency coding whose receiver does not know the channel state information and the methods to reduce the encoding-decoding complexity have not been solved, and this has constituted a bottleneck of the research of noncoherent space-frequency coding.

非相干空频码具有接收端不需要知道信道信息的特点，而到目前为止，针对非相干空频码的性能分析和如何降低编译码复杂度的问题还没有得到很好的解决，这些问题已成为研究非相干空频码的瓶颈。

Many nanotwins were formed in this triangular region. HREM observations showed that nanotwinning dislocations were nucleated at noncoherent twin boundaries with the local stress concentration, and the nucleation is related to the dislocation dissociations at the boundary ledges. The proceeding of these nanotwins is the homogenous shears of 1/6 [11〓] twinning dislocations, which is that the trailing 1/6 [112] twinning dislocations repel the leading twinning dislocations to proceed in the (111) planes. Therefore, twinning dislocations at the twin tip appear to be on one side of twin, forming a noncoherent twin boundary with a semilenticular shape.

在此三角区域内发现许多纳米孪晶的存在，通过高分辨电镜手段观察到纳米孪晶中的孪生位错是在具有原位应力集中的非共格入射孪晶界上形核的，纳米孪晶的形核与界面的台阶位错及其位错分解反应有关，纳米孪晶的行进是1/6[11〓]孪生位错均匀切变机制，即每一个（111）孪生面上对应一个孪生位错，其中拖尾的1/6[11〓]孪生位错将会推动领先的孪生位错行进，于是在形变孪晶头部位置的孪生位错排列常常出现在形变孪晶的一侧界面，形成一个半透镜状的非共格孪晶界。

Proceedings from the theory of geometric optics,the condition adaxial noncoherent imaging of Fizeau opticalsynthetic aperture imaging system is derived to achieve diffracion limited performance over a finite field of view,and the conclusion is that the angular magnification of the individual telescope must be equal to the linear demagnification factor.

从几何光学理论出发，详细推导了斐索型光学合成孔径成像系统的近轴非相干成像条件，即子望远系统的角放大率等于系统的线性缩放因子。对于焦平面上的像点而言，合成孔径成像系统可等效为一个带有特殊形状孔径光阑的望远系统，这要求该孔径光栏的开口形状和位置分布与合成孔径成像系统各子系统孔径大小和位置分布相一致。

In the last lew years of the seventies, the fault tree of the noncoherent system was applied in the reliability analysis of complex systems.

七十年代末期，非相干系统失效树已开始应用于复杂系统的可靠性分析。

Based on the Maximum Likelihood receiver principle,Coherent-Noncoherent integration is analyzed. It has serious square loss Characterization, especially in real data. Differentially coherent integration algorithm which is frequently used in spread spectrum communication is analyzed in detail for high sensitivity signal detection.

基于最大似然接收机原理，详细分析了相干-非相干(Coherent-Noncoherent)积分算法，表征出该算法在高灵敏度条件下由于非相干次数增加带来的平方衰减，实测数据的分析证实了这个问题更为严重。

The energy calculation of the noncoherent despreading/demodulation signal was extended into vector norm calculation based on the equivalence property theory of vector norm in the orthogonal codes spread spectrum system.

依据向量范数等价性原理，将正交码扩频系统中非相干解扩解调信号的能量计算推广为向量范数的计算。

An Unscented Kalman Filter based noncoherent detection method for Chaos-Shift-Keying communication system is proposed in this paper.

摘要基于UKF算法，该文提出一种CSK通信系统的非相干检测方法。

Some methods to improve the system's output SNR by coherent or noncoherent operating are also discussed.

最后讨论了用相干或非相干处理来改善系统输出信噪比的方法。

The simulation results show that the proposed method is superior in resolving noncoherent signal.

仿真实验表明新算法不仅估计精度高而且能够处理的信号个数可大于阵元个数。

A method and apparatus for decoding an orthogonally encoded data signal in a noncoherent receiver system.

非相干接收系统中对正交编码数据信号进行解码的方法及装置。

Among which is the mindset, perceptions and moralities of those who accept mini- military tasks for economic gains.

其中最重要的是心态，观念和道德的人谁接受小型军事任务的经济收益。

In time course imaging, activity peaked 2 days after coronary ligation.

在时程成像检测，活性峰值在冠脉结扎后2天。