Research the digital quadrature demodulation.

数字解调技术及其实现。

So why are opposition and quadrature so significant?

那么，为什么冲位和正交意义如此重大？

Quadrature Mirror Filters (QMF) are a new type filter system.

正交镜象滤波器组(QMF)是一种新型的滤波系统。

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。

The quadrature mirror filter (QMF) is very effective in the aspect.

这种滤波器在重建信号方面非常有效。

Today, the planet Jupiter is at eastern quadrature - or 90 degrees east of the sun.

今天，木星处于东方正交，即与太阳呈90度夹角。

Analyze the quadrature demodulation and difference demodulation algorithm of MSK signal.

对MS K信号，分析了正交解调和差分解调算法。

Gauss quadrature and minimum residual displacement method (with iteration) are used in the analysis.

采用高斯积分，利用最小残余位移法进行迭代计算。

The performance analysis of quadrature correlation detection algorithm for DS-SS signal is presented.

本文给出了直接序列扩频信号正交分路周期相关检测算法的性能分析。

A test method of torque synchro rotor quadrature axle damping short-loop loss and current was introduced.

介绍力矩式自整角机转子交轴阻尼短路环损耗和电流的一种测试方法。

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。

The techniques of quadrature processor based on the polyphase filters are important part of software radio.

基于多相滤波的正交处理器技术是软件无线电技术的重要组成部分。

In particular, the arbitrary higher order squeezing of the quadrature operators in these states is studied.

具体研究了在这种奇偶相干态中正交算符的任意阶压缩性质。

Quadrature phase shift keying(QPSK) signaling is employed to make efficient use of the available bandwidth.

传输信号采用正交相移键控调制方式，以有效利用有限通信带宽。

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。

The quadrature drift and control were specially introduced and quadrature drift components equation was deduced.

文中重点介绍了正交漂移及其控制，推导出正交漂移分量的数学模型。

At the same time, we refrain mirror frequency effectively with the method of digital quadrature modulation (DQM).

同时，由于采用了数字正交调制，从而有效地提高了镜频抑制。

Quadrature couplers are an excellent way for power distribution due to a high isolation and high power capability.

正交耦合器是一个很好的方式，具有配电，高分离和高功率的能力。

The speed and accuracy of digital quadrature sampling and pulse compression is also verified based on ADSP-TS101 .

在ADSP TS101上，验证了这个算法实现数字正交采样和脉冲压缩的速度性能和精度。

Differential quadrature method (DQM) and local differential quadrature method (LDQ) are a kind of meshless methods.

微分求积法(DQM)与局部微分求积法(LDQ)是无网格法的一种。

In quadrature elements, variations of material properties are simulated by adopting material parameter of Gauss point.

在积分网格中，取高斯点的材料参数来模拟材料特性的变化。

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。

The state space method coupled with the technique of differential quadrature (SSDQM) was presented for plane stress problems.

针对平面应力问题，提出了利用状态空间法和微分积分法的混合解法（SSDQM）。

This paper presents mechanical quadrature methods for solving the boundary integral equations of nonlinear boundary value problems.

本文提出了解非线性边值问题的边界积分方程的高精度机械求积法。

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。

A method to design efficient radar wideband digital quadrature demodulation receiver is described. The design condition is also given.

描述了一种高效的雷达宽带正交接收机的全数字设计方法，给出了设计条件。

QAM (Quadrature Amplitude modulation) has been widely used in various digital communication systems due to its high modulation efficiency.

正交幅度调制(QAM)具有较高的调制效率，被广泛应用于各种数字通信系统中。

Quadrature phase method is one of the important methods in directional blood flow information detection using Doppler ultrasound techniques.

正交相位法是超声多普勒技术中提取双向性血流信息的一种重要方法。

The reasons for inducing quadrature error and offset error are analyzed and the expressions of quadrature error and offset error are induced.

分析了正交误差和失调误差产生的原因，推导了正交误差和失调误差的表达式。

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。