跟踪信号

一种增强波导多层光盘跟踪信号的方法

An Approach To Enhance Tracking Signal for Waveguide Multilayer Optical Disk

通过短程滤波网络，实现了特征跟踪信号的提取；

In the short - range filter , feature tracking signal is extracted .

此方法是根据跟踪信号不断调整加权系数，以此提高预测精度

AWES adjust the smoothing factor continuously according to anterior prediction errors .

另一方面，尽管GPS接收机具有一定的抗干扰能力，但干扰功率达到一定值时，GPS接收机并不能正常捕获和跟踪信号。

Secondly , despite the fact that the GPS receiver has certain anti-interference capability , when the interference power reaches certain level , the GPS receiver can not acquire and tracking the signal normally .

文章给出了CCD在动态数据采集过程中实时跟踪信号的变化来调整采集速度和信号增益的方法。

This paper is on the methods of CCD on the adjustment in collecting speed and signal gain by tracing signal changes at real time in the course of dynamic data collecting .

本设备是一种用于控制WT-1卫星接收天线自动跟踪信号的先进装置。

This device is an advanced equipment used to control WT-1 receiving antenna to track satellite signals automatically .

该方法将自适应Funnel滤波器（AFF）和滑动Goertzel算法（SGA）结合起来，能够精确地跟踪信号的频率，计算相位差。

This method combining the adaptive Funnel filter ( AFF ) with sliding Goertzel algorithm ( SGA ) can accurately track the signal frequency and calculate the phase difference between two signals .

该算法利用QR分解或Givens旋转代替直接SVD跟踪信号子空间进行盲信道估计，在估计性能基本不变的情况下，极大地降低了运算量。

The algorithm makes use of the QR factorization or the Givens rotation instead of directly SVD to track signal subspace to estimate channel blindly . Without performance penalty , this algorithm reduce the computational complexity significantly .

通过采用最小均方误差（LMS）自适应算法，跟踪信号的相位信息，获取PCM/DPSK信号相位突变点，根据DPSK调制原理，实现信号的解调。

The method tracks signal 's phase information by LMS algorithm , and gets skip position of signal 's phase , thus realizes the demodulation for PCM / DPSK signal according to the regulation of modulation of the signal .

利用磁场传感器收集焊接自动跟踪信号

Signal Collection for Welding Automatical Track with Magnetic Sensor

自跟踪信号的传递及提取

Transfer and Demodulation of Auto - Tracking Signal

一种直接跟踪信号子空间特征成分的新算法

A Novel Principal Component Analysis Subspace Tracking Algorithm

一种同频双脉冲水声跟踪信号体制下深度信号检测方法

A depth signal detection method based on single-frequency double-pulse underwater acoustic tracking signal system

单脉冲雷达动目标跟踪信号处理机

Moving Target Tracking Processor in Monopulse Radar

为了提高模型的自适应能力，初步探讨了跟踪信号的选择；

For increasing the adaptability of models , the choice of tracking signal is discussed .

建立一个基于匹配跟踪信号分解技术的低速率视频编码器框架。

A low bit-rate video-coding scheme based on matching pursuit is built in this section .

针对波导多层光盘的特点，提出了跟踪信号增强的方法，该方法通过控制光盘内层信息面的反射率来提高聚焦和信道跟踪信号的强度。

The signal enhancement is achieved by adding reflect layers and controlling the reflectivity on the information surfaces .

好的，美国人激活了他的跟踪信号。收到，跟进。

OK , so , the American has activated his tracking beacon . - Roger that . Move in .......

本文针对这一情况，首先分析了用户星天线指向跟踪信号，并设计单轴天线控制器。

In this paper the track pointing signal of user satellite is studied , and a SISO controller is designed .

就“光学跟踪信号源”、“虚拟装备”、“全面评估”等问题作一讨论。

This paper describes the applications such as signal source for optical tracking , virtual equipment , over all assessment etc.

为了跟踪信号在不同时刻的频率变化情况，需要估计其瞬时频率。

It is necessary to estimate the instantaneous frequency of a signal in order to track its frequency variation with time .

运用锁相环技术使采样频率同步跟踪信号频率，提高采样数据计算的准确性。

The use of phase-locked loop technology makes the sampling frequency synchronously follow the signal frequency and improves the calculation accuracy of sampling data .

该算法首先将语音信号进行小波变换，利用小波系数去噪，然后选择小波部分子带跟踪信号的能量变化以分割语音与静音。

Wavelet transform is first employed to denoise , and the cross correlation between the wavelet coefficients in two sub bands is then used to extract pure speech duration .

仿真结果表明，在有谐波干扰的情况下，数字锁相环方法可以准确地跟踪信号频率的变化和计算相位差。

The simulation results show that the digital method based on phase locked loop can track the change of signal frequency and calculate the phase difference accurately when there are harmonic disturbances .

它包括以下几个过程：定向暂态细胞对图像的暂态特性进行响应，输入到定向短程滤波器中，通过竞争信号的作用有选择性的放大特征跟踪信号。

It is the result of several processing stages : Directional transient cells respond to image transients and input to a directional short-range filter that selectively boosts feature tracking signals with the help of competitive signals .

运用半光斑成像的光学原理获得跟踪信号，跟踪信号由高精度两象限光电二极管进行拾取、然后采用专门的差动电路进行信号调理，并且采取闭环控制调节激光光强而自适应不同表面的测量。

Tracking signal is obtained by using the principle This signal is acquired by high precision Dual-element photodiode , and then conditioned by special differential circuit . Closed loop control is employed to adjust the intensity of laser in order to measure the different surface automatically .

而对交通信号灯，则用Kalman滤波跟踪交通信号灯的灯板和灯区域。

For the traffic light , the board and lamp of the traffic light are tracking by the Kalman filter .

LQR控制器用于倒立摆的控制模式，保持摆锤稳定在竖直向上不稳定状态点附近，使小车位移跟踪给定信号。

The LQR controller uses the pendulum control mode to keep the pendulum near the vertical up unstable state points and gives signals of car displacement tracking .

本文进行了PID控制算法以及模糊控制算法对系统阶跃响应的对比研究，提出采用增量式PID算法能较好地跟踪给定信号，而采用模糊控制算法能进一步提高系统的动态性能。

The contrasts to step respond between PID control method and fuzzy control method are studied . The given signs can be precisely followed when PID control method acts , however , the system dynamic performance can be further improved when fuzzy control method has effect .

通过采用硬件与软件结合的锁相环技术和双缓冲技术，用CPLD、AD和FIFO实现一种时序严格、由硬件自动完成数据采集的电路，能够自动跟踪转速信号的变化，实现整周期采样。

The phase-locked loop and double buffer technique adopt the method which , combines hardware with software . A circuit which has a strict time order and can automatically acquire data is realized by using CPLD , AD and FIFO .