查询词典 waveform digitization

The key of this technology is to use the intermediate frequency signal digitization and the I/Q demodulation in the radar and the communications domain as well as the digital signal processing technology.

技术的关键是采用雷达、通信领域中的中频信号的数字化和I/Q复解调及数字信号处理技术，从而大大地降低了成本、提高了系统的稳定性、灵活性和一致性。

The log and litho log ic section intelligent digitization software has been developed to meet the requirement of production and research.

为满足生产及科研的需要，开发了测井曲线图和岩性剖面智能数字化软件。

This study aimed to compare and research the three different digitization models of local TV news production.

本研究系在比较研究国内电视新闻产制数位化的三种模式。

It includes hardware equipments and foundational theory of the image digitization. This paper expatiates on some digital image processing technologies that the inspecting system may apply to the research and analysis of the collected glass-crack image. Using neighborhood average method and median filter retrains the image noises and make the image edge smooth. Then protract the histogram of the gray image, get the threshold of this image, utilize the threshold method and gray-level slice method to get a binary image, and detect the image edge. Finally calculate the area and perimeter of the glass-crack image, and use the circularity to judge whether this image is a glass-crack image.

本文重点阐述了研究和开发这套玻璃瓶裂纹检测系统所应用到的一些数字图像处理技术，并应用这些技术和方法对采集的裂纹图像进行了处理和分析：应用邻域平均法和中值滤波法来抑制图像的噪声，使图像的边缘平滑；然后绘制出处理过图像的灰度直方图，得到该幅裂纹图像的阈值，利用阈值法和灰度级切片法对裂纹图像进行二值化处理，得到其二值图像，并对图像进行了边缘检测；最后计算出裂纹图像的面积和周长，利用圆形度指标来判断该图像是否为裂纹图像。

Firstly, the paper analyzed the characteristics of movie video's digitization from the angle of movie noumenon.

首先，从电影本体的角度分析数字时代电影影像的数字化特点。

It has integrated GIS incorporating image manipulation and handling, on-screen digitization, data editing and analysis.

该软件集成了GIS一体化图像操作和处理，屏幕数字转换，数据编辑和分析功能。

This article is used to simply introduced the digitization,network and intelligentize of a large Public Address System,and the solution of digital P.A. System that based on Ethernet.

system 『摘要』本文对数字化、网络化、智能化大型公共广播系统做了简要介绍，介绍了以标准以太网为平台的数字化公共广播系统的实现方案。

The instrument simultaneously sample for three phase voltage and current. Rotary photoelectric coding switch and LCD are used for human-computer interaction. it makes the interface compact and efficient. Utilizing the function of positive and negative edge trigger of the programmable counter array unit in MPU, signal zero-cross is captured for the phase detected based on double way. The software synchronism sampling method based on real-time parameter self-optimizing minishes period truncation error, and the measurement accuracy is improved. The digitization power measure imports traditional two-unit and three-unit methods and expands application range of the instrument. The capacity is discriminated by soft ware table-look-up on the load loss. The value of a quantity is converted to the value when reference temperature (75 ℃) from test temperature.

该仪器具有以下特点：仪器对三相电压电流同时采样；基于旋转式光电编码器和液晶显示屏的人机交互界面简洁而高效；可编程计数器阵列PCA"捕获"信号的过零点用于双向过零平均鉴相，得到准确的相位差和周期；基于实时参数自寻优的软件同步采样，有效地减小了周期截断误差，提高了测量准确度；数字化功率测量引入了传统的二表法和三表法，扩展了仪器的使用范围；实际容量根据负载损耗用软件查表的方法来判别；测量值已从试验温度折算到了参考温度(75℃)时的值。

The author unites PC, traditional ultrasonic－ testing device, high－ speed data acquisition card and software together as a system. This system can finish A,B,C and P scanning, determine velocity in the tested material ,measure the height, show the defect pictures inside and recognize the defect, etc. The digitization, picturization, intelligence and automation of the testing are realized.

该卡与传统超声探伤仪， PC586计算机以及高级编程软件可非常方便的构成智能化超声检测系统，具有 A、 B、 C、 P扫描、声速测定、厚度测量、图象显示以及缺陷识别等功能，实现了超声检测的数字化、图象化、智能化、自动化。

This design is based on the angle designed in digitization and describes the principle of the pulsimeter.

本设计采用锁相环100倍频方案，将人体脉搏跳动次数通过脉搏传感器采样、放大、整形成标准方波。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。