ocdma相干非相干_非相干系统是什么意思

1. 我们分析了利用Edge技术的非相干激光雷达风场测量系统以及使用圆锥扫描激光束的方式，连续4次对观测场内的大气进行视线速度测量的风场探测反演方法。

We analyzed the edge theory used in Doppler lidar system which employing incoherent heterodyne detection and the conical scanning manner known as velocity azimuth display.

2. 该方法有助于在具有非消多普勒能级结构的热原子系统中实现原子相干效应，为在更一般的原子系统中实现光速减慢和光信息的存储提供可能。

Our results are useful to realize the atomic coherence effect, slow light and light storage in diverse hot atomic systems.

3. 本文提出一种用非相干光系统识别采色图像的方法。

In this paper, we proposed a method of recognition of color image under incoherent light.

4. 本文目的是对多径传输的最佳系统在相位非相干接收时的质量进行估价。在接收机对信道的参数测量为理想的情况下，对路径数目N=2和N》1的两种情形进行了误差概率的计算。

The optimum structure for phase incoherent reception in the multipath transmission is discussed in this paper.

5. 模拟仿真了一种新型编码的光通信系统，系统采用了双二进制码(DB Duo-binary)电信号作为调制信号，激光脉冲作为载波信号，用非相干外调制技术作为调制方式。

A novel simplex optical communication system based on duo-binary code was designed and simulated.

6. 从物理学的角度讨论了细胞电激发光的相干性及外电场对生命系统和非生命系统的作用的区别，前者更重要的是信息作用，从而提示了研究外电场对细胞作用以及细胞与环境和细胞与细胞间通讯的新方法。

Some discussions are made on coherence of photon emission from the Cell population and on the difference of the effects of external fields on living system and on non-living systems. From point of view of physics, both have energy relationship, but the former is more informational that may open a new approach to study cell to environment and cell to cell communication.

7. 充分利用反辐射导弹被动导引头分辨角大不能抗两点源干扰这一弱点，给出了多点非相干有源诱饵系统诱骗反辐射导弹的方法。

The technology of cheating Anti-Radiation-Missile by multi-point non-coherent active decoy systems presented in detail by thoroughly taking use of the frailty of the Passive-Radar-Seeker of the Anti-Radiation-Missile of having a too-large identifying angle and can not counter the disturb of the two-point radiation source.

8. 从码字的非周期互相关函数出发，分析异步相干扩时光码分多址(OCDMA)系统的多址干扰(MAI)和差拍噪声(BN)。

Multiple-access interference (MAI) and beat noise (BN) in coherent time-spreading optical code-division multiple access (OCDMA) system are analyzed according to aperiodic cross-correlation function.

9. 本文分析了一个被相干和非相干泵浦的三能级原子系统的稳态增益和激光特性，得出产生无反转激光的条件和激光的强度。

The steady state gain and lasing in a closed coherently and incoherently pumped a three-level 2-type atomic system are analyzed. The condition of lasing without population inversion and the laser intensity are obtained.

10. 共焦扫描光学显微(CSOM)系统有透射式和反射式、相干光和非相干光荧光等类型。

Confocal scanning optical microscopy (CSOM) includes transmission type and reflection type as well as coherent incident light type and incoherent fluorescent light type.

11. 本章研究用非匹配高斯脉冲实现四能级准∧型系统中的相干布居转移。

The population transfer in a quasi-lambda four-level system driven by unmatched Gaussian pulses is investigated.

12. 尽管不考虑原子相干性和注入经典光场情况下非简并级联双光子激光器动力学行为已经有人研究过，但是到目前为止考虑了原子相干性和注入经典光场情况下系统动力学行为还没有人研究。

Although the dynamics of nondegenerate cascade two-photon laser was studied in the absence of atomic coherences and injected classical field, the dynamics of the system in the presence of atomic coherences and classical field has not been studied so far.

13. 非相干能量检测是频移键控技术的关键，系统采用线性调频信号作为载波信号，其匹配信号具有尖锐的能量峰值，易于检测、判决，以降低误判的概率。

Non-coherent energy detection was the key technique of frequency-shift keying modulation, so the system introduced Chirp signal as the carrier signal for its performance with sharp energy peak, easy to detect and judge to reduce the probability of error.

14. 最后，针对采用鉴频器的非相干解调给出了整个系统的实现方案。

Finally, the implement method of communication system applied noncoherent demodulation technique with frequency discriminator is discussed.

15. 回顾了我们新近提出的单通道菲涅耳数字全息光学系统，该系统能获得由非相干光照射的三维物体的全息图。

We review our recently proposed single-channel optical system for generating digital Fresnel holograms of3D real-existing objects illuminated by incoherent light.

16. 基于多焦点透镜的成像关系和光学实时器件，提出一种紧凑的非相干光学处理系统以实现实时数学形态变换。

A compact incoherent optical processor based on multifocus lenses and real-time devices is proposed to implement real-time optical morphological transforms.

17. 在共聚焦显微镜中，通过系统的归一化轴向光强半高宽与探测器有效半径和非相干光源有效半径的关系曲线，获得非相干光源照明下系统光学层析能力的变化规律。

Through the curve of half high width of normalized axial intensity via detector effective radius and incoherent incidence light effective radius, the optical sectioning property of confocal microscope was gotten.

18. 分析了非相干测速系统中测距音辅助捕获的实现方法，并分别讨论了ESA标准和CCSDS标准情况下非相干测速的实现方法。

The method for range tone acquisition in non-coherent velocity-measurement systems is analyzed. Finally, the realization of non-coherent velocity-measurement for ESA standard and CCSDS standard is discussed respectively.

19. 具有双极性的非相干OCDMA系统性能分析

Analysis for the Performance of a Non-Coherent OCDMA System with Bipolarity

20. 研究了随机M进制正交码直接序列扩频码分多址信号经过多径瑞利频率非选择性衰落，在非相干RAKE接收机中采用最大输出信噪比选择或最大输出选择分集接收时系统的性能；

Performance of M ary orthogonal direct sequence code division multiple access (DS-CDMA) signals over multipath Rayleigh fading channel with noncoherent RAKE receiver is examed. Two maximum selection diversity reception schemes, maximum signal to noise ratio selection and muximum output selection, are considered.