给出了极窄带滤波器的具体实现方案。
An example of extreme narrow band low pass filter is also given in detail.
这张图片是由宽带滤波器和窄带滤波器所拍摄的照片所合成的。
The picture is a composite of images taken through both broad and narrow band filters.
提出一种基于全光纤有源环形腔结构的双可调谐窄带滤波器。
In this paper, a kind of dual tunable narrow bandpass filter is proposed based on the structure of all optical active fiber ring resonator.
这张拼贴图中所含的图片数据是通过窄带滤波器得到的，它只会传播氢原子发出的红光。
The mosaic includes image data taken through a narrow filter that transmits only the red light of hydrogen atoms.
PLL具有良好的窄带和跟踪特性，文中提出了基于PLL的窄带滤波器杂散抑制方法。
For the PLL has better performances in narrowband filtering and frequency tracking, the paper presents a new method which based on PLL accomplish the spuriousness restrained.
该算法结合解线调和窄带滤波器分离和估计各分量的参数的算法，可以一次提取多个尖峰值。
This algorithm combined with the algorithm estimating and separating parameters of each component using Dechirp Narrowband filter can pick up many peak value once from the WHT plane.
窄带滤波器的数据追踪的是星云中的原子，硫原子发出红光、氢原子放出绿光，而氧原子呈现蓝光。
The narrow band data traces atoms in the nebula, with emission from sulfur atoms in red, hydrogen atoms in green, and oxygen in blue.
但是，对于中心频率不断变化的CW脉冲信号，使用常规的硬件窄带滤波器很难实现对其跟踪滤波。
But to the CW pulse signal with changing frequency, it is difficulte to realize tracking filter with common narrowband filter.
利用传输矩阵法设计了一种适用于绿光波段的光子晶体窄带滤波器，并研究了影响滤波器特性的多种因素。
A photonic crystal narrow band filter at green light wave band is designed with optical transfer matrix method, and some factors affected are studied.
本文介绍适用于窄带滤波器的中心频率衍射补偿方法。实验表明，此方法可以有效地改善滤波器的阻带特性。
It is shown experimentally that a method available for compensating for the diffraction by centre frequency in narrow band filters can effectively improve their stopband characteristics.
该方法根据空间约束和导向矢量误差约束获得相应的窄带滤波器，并利用其对Capon滤波矢量进行滤波得到谱估计。
The estimator utilizes constraints on both the subspace and the errors of steering vectors to design a narrow filter. The filter outputs the spectral estimate with the filtering vector as its input.
这张哈勃影像是一组通过窄带滤波器拍摄到影像合成，影像中显现了由氮，氢，氧原子放射出的色彩，分别是红色，绿色和蓝色辉光。
The Hubble image is a composite of exposures through narrow-band filters, presenting emission from nitrogen, hydrogen, and oxygen atoms in the nebula as red, green, and blue hues.
提出一种新的自适应算法估计被噪声污染的正弦波信号的频率，依据IIR窄带滤波器和自适应FIR滤波器的级联，形成快速有效的自适应算法。
In this paper, based on a narrow IIR BPF cascaded by an adaptive FIR filter, a novel fast adaptive algorithm for sinusoid frequency detection in noisy environment is depicted.
这种结构的光子晶体可以用来制作超窄带滤波器和多通道窄带滤波器，有望在光通信超密度波分复用技术和光学信息精密测量技术中获得广泛应用。
The concept of quasiperiodic one-dimension photonic crystal nanometer film is proposed, and research finds that it can be applied to realize optic narrowband filter.
这种结构的光子晶体可以用来制作超窄带滤波器和多通道窄带滤波器，有望在光通信超密度波分复用技术和光学信息精密测量技术中获得广泛应用。
The concept of quasiperiodic one-dimension photonic crystal nanometer film is proposed, and research finds that it can be applied to realize optic narrowband filter.
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