The key technique of this new filter is how to achieve the extreme narrow band-pass width and a slight deviation of central frequency.
如何实现极窄的通带宽度和极小的中心频率偏差是研制中所解决的关键技术问题。
The filter used a kind of general structure, whose central frequency located nearby the rotation speed to reduce the unbalance vibration.
该陷波滤波器采用通用式结构，其中心频率分布在转子转速附近以抑制不平衡振动。
The phase balance of the central frequency can ensure the accuracy of the correlation phase, and the residual phase error will only reduce the coherency.
实现信道中心频率的相位精度就可以保证干涉相位的精度，而通道内的残余相位差只会引起干涉相关度的降低。
Estimation of Doppler central frequency has an important effect to accuracy of fixed position in the fixing approach with no reference points for ocean SAR.
在无参考点海洋sar定位方法中，多普勒中心频率估计对定位精度有着重要的影响。
In radar signal processing systems, the central frequency and bandwidth of clutter must be accurately estimated to suppress clutter and prevent target whitening.
在雷达动目标检测等处理中，为了有效抑制杂波，并防止目标白化，首先需要对杂波谱中心和谱宽进行有效的估计。
The method which combines cross correlation detection with chaos theory to detect the weak signals relative to central frequency in overvoltage monitoring is proposed in the paper.
提出将互相关检测和混沌理论相结合应用于过电压监测中的频率跟踪，检测相对于中心频率极小的微弱信号。
The effect of Signal-Noise-Ration (SNR) to the estimation of Doppler central frequency has been studied using theoretical method and simulation technique, and results are given in curves.
该文从理论和仿真两个角度研究了信噪比对多普勒中心频率估计的影响，给出了多普勒中心频率和信噪比的理论及仿真关系曲线。
The effect of Signal-Noise-Ration (SNR) to the estimation of Doppler central frequency has been studied using theoretical method and simulation technique, and results are given in curves.
该文从理论和仿真两个角度研究了信噪比对多普勒中心频率估计的影响，给出了多普勒中心频率和信噪比的理论及仿真关系曲线。
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