传感器利用注入结电流直接调频的半导体激光(LD)产生外差干涉,从而实现了干涉相位的线性检测。
A heterodyne interference is caused by a frequency modulation of a laser diode (LD) with a ramp injection current, and a linear phase detection is realized.
FIR数字滤波器以其良好的线性相位特性被广泛使用于现代电子系统中。
In the modern electrical system, FIR digital filter is widely favorable for many applications due to its well linear phase characteristics.
与基于相位-坐标关系的非线性小数重合法相比,该算法的数学表述更加明晰,应用也更加方便。
Compared with the nonlinear excess fraction method based on phase coordinate relations, this algorithm is clearer mathematically and more convenient for applications.
并利用图像质心不变的假设,解决了线性相位引起的图像方位位置偏移问题。
More, based on the assumption that image cancroids is changeless, we resolve the image azimuth shift problem caused by linear phase errors.
本文提出并详细说明了用最优化方法设计线性相位数字滤波器的原理和方法。
The Principle and design methods for linear phase digital filter with optimization design were presented in this paper.
这些电池调整线性和执行小的相位调整。
These adjust the linearity and carry out small phase adjustments.
特别是线性系统,相位响应有其严格的定义和意义。
Its phase response has strict definition and meaning especially for linear system.
与一般干涉仪相比该系统也因相位压缩而使工作的线性范围扩大了220倍。
Compared with common interferometers, the linearity range of this system was enlarged by 220 times for phase compress.
信道化接收机可以满足这些要求,但传统的模拟信道化接收机存在相位非线性和各信道间幅度增益不一致等缺点。
The channelized receiver covers these characteristics, but the traditional analog channelized receivers have the limitations, that is phase non-linearity, the amplitude gain non-consistent and so on.
本文提出了一种设计等波纹线性相位FIR陷波滤波器的优化算法。
This paper presents an optimal algorithm for designing linear phase equiripple FIR notch filters.
关于高温超导线性相位滤波器的研制国内还未见到相关报道。
There is no report about HTSC linear phase filters in our country now.
首先介绍了线性相位FIR滤波器的四种情况,然后在此基础上设计了一种应用多重交换算法来处理心电信号的陷波滤波器。
Four types of linear phase fir filters are introduced at first, then of this basis a notch filter for processing ECG signal is designed by using multiple exchange algorithm.
在不满足DPCA条件时,采用在多普勒频域乘以线性相位的方法来实现平动补偿。
When the DPCA condition is not satisfied, the error of sampling position can be compensated by a linear phase in Doppler frequency domain.
本文对宽调谐高线性低相位噪声的VCO进行了设计研究。
This paper mainly deals with VCO with wide tuning, high linearity range and low phase noise.
简单回顾了数字滤波器的结构和设计,详细讨论和比较了线性相位FIR滤波器的三种设计方法。
Reviewed the digital filters' structure and design concisely. Discussed and compared three design methods of linear phase FIR filter particularly.
本文重新导出FIR滤波器实现精确线性相位特性的条件。
The condition for implementing FIR filters with exact linear phase is derived once again in this paper.
在反射系数白噪、子波最小相位的假设下,研究基于线性反演的地震反射系数和子波同时估计问题。
Assuming white noise reflectivity and minimum phase wavelet, the estimation of them simultaneously by linear inversion algorithm is studied.
同时,本文还在实验中发现了,相位响应的线性化程度会随着驱动频率的提高而降低。
Furthermore, it is found out in the experiments that the degree of phase response linearization of liquid crystal modulator decreases with driving frequency increasing.
高频线性输运系数的宏观测量不会破坏这种相位关联。
The macroscopic measurement of high-frequency linear transport process does not destroy this interference effect.
另外,由于考虑了线性相位约束,滤波器组的通带平坦性约束变得更为简单,简化了设计算法。
Additionally, due to the linear phase constraint, the constraint on the passband flatness becomes simpler and the design algorithm is significantly simplified.
全相位数字滤波器(APDF)是一种新型的线性相位滤波器。
The All phase Digital filter (APDF) is a new type of linear phase filter.
本文研究了SA W线性调频信号的相位噪声对雷达发射机性能的影响。
In this paper, influence of SAW linear FM signal phase noise on radar transmitter is analyzed.
推导了三种载波相位观测量线性组合的模型:宽巷组合、窄巷组合和无电离层延迟的组合。
Three kinds of models of carrier phase observation value linear combination are deduced such as wide lane, narrow lane and free ionosphere.
提出一种用非线性晶体的相位共轭特性记录扫描全息图的方法。
A method of recording a scanning hologram with the phase conjugate property of nonlinear crystal is presented.
讨论了准相位匹配(QPM)技术中的非线性光频转换谐波振幅方程和谐波转换效率。
The harmonic amplitude equation and the generation efficiency of nonlinear optical frequency conversion(NOFC)in quasi-phase-matching (QPM) were discussed.
讨论了单输入单输出非线性最小相位系统的动态输出反馈镇定。
The paper discusses dynamic output feedback stabilization of minimum phase nonlinear systems with single input and single output.
通过数值模拟,得到了随机相位误差对不同啁啾量的线性啁啾光纤光栅的影响。
With the help of computer simulation, the effects of random phase errors on the fiber Bragg gratings with different chirps are compared.
理论分析表明,该现象可以用光克尔效应和热光非线性效应共同作用下的附加相位孔对入射光束的衍射行为来解释。
This phenomenon can be explained by the diffraction effect of the Gaussian beam from the laser induced phase hole in the nonlinear medium caused by Kerr effect and thermo optic effect.
研究表明,在高阶色散下,正负五阶非线性的存在仍然分别对交叉相位调制不稳定性起加强和削弱的作用;
The results show that, in case of high-order dispersion, the positive and negative quintic nonlinearity also intensifies and weakens the cross-phase modulation instability, respectively.
但是,由于非线性自相位调制效应的影响,在其它参数相同条件下,正色散时的ISI限制距离比负色散时要长得多。
But for the influence of self phase modulation, the ISI limited distance of positive dispersion is much longer than that of negative dispersion.
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