The performance test of W-band coherent frequency synthesizers is shown at last.
并对由各模块级联而成的W波段相参频率源进行了测试。
Frequency synthesizer module is a very important part in the radar system, which provided coherent frequency source.
频率综合模块是雷达重要部件之一，为整部雷达提供相参频率源。
The research on W-band coherent frequency synthesizers is mainly about scheme chosen, development and test of the components, which constitute coherent frequency synthesizers.
W波段相参频率源技术研究中，主要是实现相参频率源所需要的各个模块方案的选取，各个模块的设计、加工与测试。
In the method, the target reflected signal is generated by the way of coherent video simulation and the Doppler frequency of target is simulated on video.
本方法对目标回波信号采用了相干视频模拟法，在视频上模拟目标回波的多普勒频率。
The study shows that both kinds of solitons are all unstable, and we find the stability of polychromatic partially coherent optical spatial solitons is affected by light frequency.
研究表明不论是准单色还是多色的部分相干空间光孤子在传输过程中都不是严格稳定的，并且多色光孤子的稳定性受到频率的影响。
If two light waves are coherent, the waves have the same frequency, and the peaks and troughs of light waves are exactly aligned with one another.
如果两束光是相干光，那么它们具有相同的频率，并且相互间的波峰和波谷步调一致。
The significance and possibility of the use of stimulated Brillouin scattering of a mixed liquid media in tuning laser frequency and generating tunable coherent ultrasonic radiation are discussed.
讨论了利用混合介质受激布里渊散射效应调谐激光频率和产生可调谐相干声辐射的可能性及意义。
Measured results indicate that the receiving areas vary greatly with the frequency of the incident wave and the microwave coherent effect is obvious.
测量结果表明，接收截面随着入射场的频率变化波动很大，微波相干效应十分明显。
This paper worked on TDE in the cases of only one frequency and coherent components in the source based on the correlation TDE method.
以相关法为例，分别研究了仅有一个频率成分时和含部分相干成分时同源信号的TDE。
When it is realized by using the analog devices, the conventional quadrature coherent detector may result in the large image frequency errors.
传统的正交相干检波器由模拟器件构成，存在较大的镜频误差。
Because the coherent light has a consistent frequency and wavelength, itis used as a reference with which to measure the differences in the reflected light.
相干光具有稳定的频率和连续的波长，所以用来作为参照，以衡量不同反射光之间的差异。
Time domain synchronous averaging can reduce the signal not coherent to rotation frequency effectively, and extract the repetitive signals directly related to machine operation condition.
而时域同步平均可以有效衰减与回转频率无关的干扰，提取与工作状态直接相关的周期信号。
Best frequency relation is given between IF coherent oscillating source and clock frequency of full coherent radar.
给出了全相参雷达频率源的中频相干振荡源及时钟频率之间的最佳频率关系。
The plasma microwave radiation, as a novel high power microwave(HPM) source, has gotten more attention in recent years for its merits of broadband, coherent emission and tunable frequency.
近年来，等离子体微波辐射作为新兴高功率微波源，因其具有频带宽、相干和可调谐等优点，因而受到国际上的广泛关注。
With coherent detection, radio frequency (RF) signal can be recovered with simultaneously suppressed second-order distortion and third-order intermodulation.
通过相干检测的方式，可以恢复出不受二阶和三阶干扰的射频信号。
It is of very important military application value to research the coherent processing mode of radar in the state of frequency agility.
研究雷达在捷变频状态时的相参处理方式具有重要的军事应用价值。
Coherent optical beam formation is a new wideband radio frequency beam-forming technology, which is based on optical interference, diffraction principle and optical Fourier transformation.
相干光学多波束形成技术是根据光学的干涉与衍射原理，利用光学傅里叶变换而实现的一种新型的宽带射频多波束形成技术。
So the influence of high-frequency noise is analyzed by the analysis of power spectra, coherent structure, probability distribution of time series and differences of them.
针对这些现象，从谱、相干结构、时间序列本身的概率分布和标量差的概率分布，分析了高频噪声的影响。
With the increase of the average photon number of the coherent light field, the oscillation frequency of the atomic population inversion increases correspondingly.
随相干光场平均光子数的增加粒子数反转的振荡频率增大；
Light that is of one frequency, with the waves in step is called coherent light.
单频率且波同步的光叫相干光。
We refer the formation of coherent patterns to local frequency shift of chemical waves induced by the inhomogeneity.
我们将有序斑图形成的原因归结为缺陷导致的化学波频率的改变。
The squeezing of the single mode cavity field is influenced by the driving field Rabi frequency, the cavity-mode frequency detuning from that of a coherent external field and the cavity decay rate.
单模腔场的压缩性质受到外加驱动场的拉比频率，腔模频率与外加相干场频率的失谐量以及腔场衰减速率的影响。
A new blind frequency offset estimation method based on cyclic prefix and virtual subcarriers in coherent optical orthogonal frequency division multiplexing (CO-OFDM) system is presented.
在相干光正交频分复用系统中，本文提出了一种新型的基于循环前缀和虚载波的盲频偏估计方法。
In the past 20 years, the imaging technique of ultrasound imaging equipment has made much progress in harmonic imaging, coherent imaging, Doppler imaging and frequency spectra analysis.
近20年来，超声成像设备在电脑超声成像技术，谐波成像技术，相干处理成像技术，多普勒频移成像技术，回波频谱分析技术等方面取得了重大进展。
This paper presented a new counter-countermeasure method, known as two way anti frequency coherent method, to counter the noise frequency modulation disturbance.
该文针对接近白噪声的小指数调频干扰提出一种新型反干扰的方法：两路倒频相关法。
In order to attain the goal of using multi scale frequency divided data for interpretation, the paper applied the wavelet multi resolution analysis to detect the coherent data volume.
为了达到多尺度分频解释的目的，本文将小波多分辨率分析应用到相干体提取过程中。
With a phase grating located at Fourier frequency plane, optical image subtraction is obtained as a result of the coherent superposition of the zeroth and the first order of the diffracted light.
置一位相光栅于相干光学处理系统频谱平面，利用其零级与一级衍射光的相干迭加实现图象相减。
The frequency spectrum and the coherent function of the signal were analyzed.
分析了信号的频谱及相干函数。
An estimation method of direction of arrival (DOA) for UWB based on frequency modeling cannot deal with coherent sources.
基于频域模型的UWB到达角估计方法只能解决非相干源问题，因此提出了一种改进的估计方法。
The method in which coherent accumulation is carried out after the echo is compensated by a Doppler frequency shift is introduced.
提出了一种先对回波信号进行多普勒补偿后再进行相干积累的方法。
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