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quad·ra·ture 英ˈkwɒdrəˌtʃʊə美ˈkwɑdrəˌtʃʊrAHDkwŏdʹrə-ch‹r' 高COCA⁹⁵²⁵⁸BNC⁸⁶⁶⁶⁰⁺⁹iWeb³⁵¹¹⁷ 基本英英搭配记法例句 n.数求面积;天矩;上下弦复数quadratures Noun: the construction of a square having the same area as some other figuretime quadrature90°时差, 90°…in quadrature with在相位上相差1/4周… quadrat-ure⇒n.数求面积;天矩;上下弦 On the basis of quadrature theory and dynamic characteristics, the amplitude detection and control theory for HRGhemispherical resonator gyro is studied in this paper. 基于正交理论和半球谐振陀螺的动力学分析,研究了半球谐振陀螺的振幅检测和控制原理。 iciba The differential quadrature method presented in this dissertation is applied to discretize the nonlinear model and the corresponding DQ form is obtained. 利用本文推广的微分求积格式得到了相应的非线性控制方程的 DQ形式; cnki The matrix method and axial tracing method were applied in the calculation of the measurement of buildings which had quadrature axes. 矩阵法及轴跟踪法是解决具有正交轴线这类问题的建筑实体的工程量计算方法。 cnki The receive technology of Ultra-Wide Band UWB signal is one of the key technologies of high-speed receiver. Quadrature receiver is typical scheme in high- speed receiver. 超宽带信号接收技术是高码率接收系统的关键技术之一,正交接收机是实现超宽带信号接收的典型方案。 cnki The system distortion is inevitable in wide-band analog quadrature receiver because of the existing of amplitude and phase errors, the performance of receiver become worse. 由模拟器件构成的宽带正交解调接收机会由于正交通道的幅相不一致性造成整个系统的失真,进而影响整个接收系统的性能。 cnki A new quadrature sampling technique for arbitrary bandpass signal within baseband sampling rate is presented. 提出了一种在基带采样率内对任意带通信号的正交采样技术。 cnki Analyze the quadrature demodulation and difference demodulation algorithm of MSK signal. 对 MSK信号,分析了正交解调和差分解调算法。 cnki As a key technology in digital quadrature demodulation system, the direct IF sampling filter with sharp cutting-off transition band can improve the performance of demodulation system. 中频采样是数字正交鉴相系统中的一项关键技术,具有锐截止特性的中频采样滤波器可以改善鉴相系统的性能。 dictall Based on polyphase filtering technology for digital quadrature transform, this paper presents a new algorithm for digital quadrature demodulation in SR through mathematical derivation. 文章基于多相滤波的数字正交变换技术,通过数学推导,提出了一种软件无线电中的数字化正交解调新算法。 dictall Correction coefficients can be received based on statistic average when importing a test signal. Then quadrature demodulation errors are realized. 利用在接收机输入端加入测试信号,基于统计平均的思想求出所需要的校正系数,然后实现正交解调误差的校正。 cnki Finally, some ways of MTI processing are compared in amplitude and phase unbalances of quadrature channels. 最后比较了几种 MTI处理方法对正交通道幅相不平衡度的要求。 cnki For the multipath delay spreading problem existing in the mobile communication systems, a parallel quadrature AM data transmission system with a number of overlapping sub channels is investigated. 针对移动通信系统中存在的多径延时扩展问题,研究了一种具有很多相互重叠子信道的并行正交调幅数据传输系统。 cnki In this paper, author given the construction of four point- quadrature rule of Cauchy principal value of an integral by parameter. 作者在本文中给出了一个柯西主值积分的参数优化四点求积公式。 iciba Program for using an IBM PC to read quadrature encoders through the parallel port requires bi-directional port and display position data on- screen. 计划使用 IBM的 PC阅读正交编码器通过并行端口需要双向端口和显示位置数据在屏幕上。 diycnc.org Set up quadrature cells in the domain. 设置域内的积分单元。 iciba So why are opposition and quadrature so significant? 那么,为什么冲位和正交意义如此重大? iciba The computation burden of the quadrature sampling and pulse compression is huge when the data rate is high and the time bandwidth product is not small. 在高数据采样率,特别是大时宽带宽积条件下,时域的数字正交采样和脉冲压缩包含大量的乘加运算。 cnki These extensions lead to generalized Gaussian quadrature formulas which have high algebraic precision. 这一推广导出了具有高阶代数精度的广义高斯求积公式。 dictall This paper introduces a new system for measuring the fluctuation of radar RF pulse series by using IF quadrature dual channel, and gives theoretic analysis of this system. 提出了一种利用中频正交双通道测量雷达发射机射频脉冲序列起伏的新的测量系统,并对此系统进行了理论分析。 cnki This paper presents a method for orientation estimation which combines the quadrature filtering with nonlinear diffusion. 提出了一种将正交滤波和非线性扩散相结合的取向估计方法。 cnki This paper presents a new quadrature method for singular integrals. 本文给出一种新的奇异积分求积方法。 cnki With electromagnetic theory of light, We found that the polarization of the light kept the same when the reflection of incident light satisfied critical reflection or dual- quadrature reflection. 应用光波的电磁场理论严格地推导了当入射光满足“临界反射”或“双正交反射”条件时,光的偏振态在反射过程不会发生改变。 cnki Quadrature receiver has widely been used in PD radar, but it is difficult to obtain perfect balance between I and Q channels when analog circuits are used. 在 PD雷达系统中,通常采用模拟方法进行正交双通道采样,但是其性能较差。 cnki Quadrature bi- channel transform is used widely in radar receiver along with the progress of digital technique. 随着数字技术的发展,正交双通道变换在接收机中得到了广泛的应用。 cnki Quadrature coherent detection can reserve all information of the complex envelope of signals, and it is therefore widely used in signal processing. 正交相干检波可以将复包络的所有信息进行保留,所以在数字信号处理中得到广泛应用。 cnki Quadrature sampling technique is widely used in the field of signal processing since it can reserve all information about the complex envelope of IF signal. 正交采样技术可以保留信号复包络的幅度、相位等信息,因此在信号处理领域中有着广泛的应用。 cnki |