数字信号

Is a functional block diagram of a digital video receiver according to the present invention.

图6为本发明实施方式的处理数字视频信号的装置架构示意图，其为数字视频接收器。

The evaluation methods for digital filter ing effects used in Gamma ray logging are discussed.

探讨了γ射线测井信号数字滤波效果的评价方法，指出评价数字滤波效果的判别准则，应包括恢复地层真值的效果评价和跟踪地层突变能力的评价两个方面。

It with wired compares mainly has the cost to be low, carries conveniently, omits the wired wiring the worry; Specially is suitable to grasping the equipment the correspondence, the battery power supply equipment, the vehicles monitoring, the remote control, the telemetering, the small wireless network, wireless copies the table, the system, the plot messenger call, the industry data acquisition system, the wireless label, the status recognition, must contacts the RF smart card, the small wireless data terminal, the safe fire protection is systematic, wireless domain and so on in external guidance system, biological signal gathering, hydrometeorology monitoring, robot control, digital audio frequency, numeral image transmission the low power loss, the microminiaturization is the current wireless correspondence product then takes along the product in particular the urgent need and the key question.

它与有线相比主要有成本低，携带方便，省去有线布线的烦恼；特别适用于手持设备的通信、电池供电设备、车辆监控、遥控、遥测、小型无线网络、无线抄表、门禁系统、小区传呼、工业数据采集系统、无线标签、身份识别、非接触RF智能卡、小型无线数据终端、安全防火系统、无线遥控系统、生物信号采集、水文气象监控、机器人控制、数字音频、数字图像传输等领域中。低功耗、微型化是当前无线通信产品尤其是便携产品的迫切要求和关键问题。无线通信的另一个关键问题是数据传输的可靠性，这取决于诸多因素，如频率选择、同频干扰、传输距离、天线选择等，这些在设计无线通信系统时都要认真考虑和比较。

A modified schmitt trigger based relaxation oscillator is used to convert thermistor and hygrometer resistances into a frequency signal .

在前端运用基于施密特触发器为基础的松弛振荡器把温、湿度传感器的电阻值转换为频率的信号，从而把温度和湿度的变化转变为数字电路可以处理的频率信号的变化。

After make a deep research on robustness and imperceptibility of digital watermark for multimedia in this paper, the author figures...

将谐波恢复算法和基于混沌的弱信号检测方法成功地应用在数字水印系统中，为研究数字水印的鲁棒性和不可感知性提供了新思路。

So, a novel machine learning based digital blind audio watermarking scheme in the wavelet domain is proposed in this paper, which could find a reasonable balance between the robustness and inaudibility of the watermark, then have the better robustness and inaudibility.

本文正是将小波变换应用到音频信号的数字水印系统中，提出一种小波域上基于机器学习方法的新的数字音频盲水印算法，使其能在水印的鲁棒性和不可感知性之间寻找到合理的平衡点，从而具有更良好透明性和鲁棒性，并在音频作品的版权保护中能有一定的实用性。

It refers to stepper motor, hydraulic slide valve, position feedback loop combination in the design of internal hydraulic cylinder, connected to hydraulic oil source, all the functions directly through a dedicated digital controller, computer or PLC programmable logic controller A digital pulse signal to complete the length of vector control of high-tech products.

它是指将步进电机、液压滑阀、闭环位置反馈设计组合在液压缸内部，接通液压油源，所有的功能直接通过专用数字控制器、计算机或PLC可编程控制器发出的数字脉冲信号来完成长度矢量可控的高新技术产品。

The simulation results show that the denoising effects of the three methods are all superior to that o f Fourier transform, and the influence of colored noise can be eliminated effectively by bispectrum methods. That is very i mportant for reconstructing LoranˉC signal under the condition of small signalˉtoˉnoise ratio, and also lays the fou ndation for digital LoranˉC signal processing.

仿真分析结果表明，三种方法的去噪效果都优于传统的傅氏变换法，且双谱估计能够有效地去除色噪声的影响，对于小信噪比条件下的罗兰C信号的提取和恢复具有重要意义，也为复杂环境下对罗兰C信号的数字处理奠定了良好的基础。

Source Module to provide digital modulation module base-band and bit synchronization signal BS (in experimental circuit board connected Link without manual wiring).

信源模块向调制模块提供数字基带信号和位同步信号BS（已在实验电路板上连通，不必手工接线）。

The non-reference-signal's adaptive digital filter algorithm of multi-sensor data fusion in the course of adaptive filter can be done without reference signals. It can adjust convergence constant automatically, it can also be recurred with real gradient value. Thus the field to apply the adaptive filter is widened, the convergence speed of the adaptive filter is sped up, the weighted disadjustmend is decreased, so that the last error of mean square approaches its minimum value more.

这章研究的基于多传感器数据融合无参考信号的自适应数字滤波算法其在自适应滤波过程中具有不用参考信号与自动调整收敛因子及使用实际梯度值进行递推的特点，这样不仅可扩大自适应滤波的使用范围，而且还使自适应滤波的收敛速度加快有效地减小权失调，从而使最后的均方误差更接近于其最小值。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。