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机载多目标攻击武器系统是当今航空武器系统研究的重点和发展的标志。该文论述了虚拟样机的概念及其在武器系统装备论证中的作用和意义,并研究了虚拟样机的基本设计技术。在给出机载多目标攻击武器系统总体和详细结构设计成果的基础上之上,文章进行了机载多目标攻击武器系统虚拟样机的设计研究,给出了样机的软、硬件结构。 相似文献
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讨论汽车电子向基于模型的设计和虚拟样机的转变。将虚拟样机与工作台实验进行比较,说明两的差异。描述了其他一些基于软件的模型技术,来说明有效模型。最后,对虚拟样机做了进一步讨论,给出了用基于模型的汽车安全系统设计的例子。 相似文献
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简要介绍了数字波束形成和正交相干检波的基本原理,以具体4X4单元的多波束平面阵天线原理样机为背景,阐述了在欠采样、正交相干检波、数字波束形成技术等方面进行的实验研究,给出了原理样机设计过程中的计算机仿真结果和实验结果,以及原理样机的组成、实现方法和测试结果。 相似文献
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地面数字多媒体/电视传输标准方案的进展 总被引:2,自引:1,他引:1
DMB—T标准方案历经了方案论证、系统仿真、样机研究、IC流片和产品机顶盒样机开发等多个研发阶段。经过多种形式的测试、评估和试验及充分验证,其性能先进,产权清晰,技术成熟,满足基本需求,产业化准备就绪。 相似文献
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在对激光测距/目标指示器原理样机中的激光器性能分析的基础上,对激光器的设计方案作了详细研究论证,激光器的测距实验表明,与激光器原理样机相比,动态效率,可靠性、机械及温度稳定性均有显著提高,完全满足总体设计的技术要求。 相似文献
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韩国的三星泰勒斯公司(STC)首次展示其三坐标相控阵多功能雷达(MFR)样机,此样机是为M—SAM项目而研制的。多功能雷达已于2004年中期完成。 相似文献
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Fifteen years ago, in 1970, the NHK (the Japan Broadcasting Corporation) forecast today's information society and started research and development of a high-resolution and wide-screen television system which we now call high-definition television (HDTV) system, to produce a new television system most suitable to the creation of "video culture of the future." Wide ranging studies have been carried out by NHK on the establishment of desirable picture quality, picture aspect, and signal standards for transmission. The provisional HDTV system proposed by NHK based on the result of many studies and the performances of the system are described. Early in 1984, the MUSE system has been developed by NHK and the desirable HDTV information can be compressed with 8 MHz and packed with this system. Thanks to the development of the MUSE system, there is the potential of HDTV broadcasting via satellite and early introduction of HDTV into package media such as video discs and videotapes. The NHK's HDTV system was designed to match many other applications. Many kinds of HDTV equipment have been developed in Japan and HDTV is approached and studied in the relation to various aspects such as electrocinematography, printing, and medicine. NHK has been working on the development of the entire broadcasting system of HDTV to unite the whole world into one "television community" in the coming generation by a worldwide single standard. Video engineers all over the world should be aware of the importance of every possible effort toward the establishment of a global HDTV system. 相似文献
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Mitsumine H. Noguchi H. Enami K. Ninomiya Y. Yamanoue Y. Yano S. Hanazato A. Okui M. 《Broadcasting, IEEE Transactions on》1996,42(3):200-207
We have developed an interactive multimedia system for the appreciation of three-dimensional art objects, such as porcelain and sculptures. With the system, the viewer is able to see a representation of the object from various directions as if holding it in his/her hands. He/she can enjoy the object images on high-quality HDTV (Hi-Vision) display, with supplementary audio and written information about the object. This system consists of (1) a video server, to store the HDTV images of the fine arts, which have been shot from various paths around the fine arts at 0.2 degree intervals; (2) a specially designed manipulator to select a desired image from the server; and (3) an HDTV or stereoscopic HDTV display, and accompanying spectacles. The HDTV video server can randomly access data at a video rate (1/60 sec), so as to quickly respond to the operations of the manipulator. The experimental system has been tested by many artists and scientists for operability and effectiveness, and has been confirmed as useful for art galleries and other educational institutions 相似文献
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1964年以来,HDTV一直作为下一代主要的电视系统进行研究和开发。HDTV要求高清晰度、高画质和大屏幕平板显示。数字高清电视和平板电视正在创造一个巨大的新市场。本文将描述HDTV显示的基本要求、PDP的性能以及PDP电视的信号处理和驱动的结构。同时论述了进一步改善图像质量的发展方向。 相似文献
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Hopkins R. 《Proceedings of the IEEE. Institute of Electrical and Electronics Engineers》1994,82(4):554-563
A public process has been in place in the United States for six years to establish an HDTV terrestrial broadcasting standard. The process, having moved through a planning phase, a competition phase, and an examination phase, has now entered a cooperation phase. Remarkable progress has been made-a testament to the process. During 1994 the American digital HDTV terrestrial broadcasting system will be tested, fully documented, and recommended to the FCC for adoption 相似文献
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A bi-channel HDTV transmission system has been developed that digitally filters the video signal in accordance with known spatiotemporal properties of the bi-channel visual of system. Differential processing of high and low spatial-frequency information yields several distinct advantages that include: compatibility with existing broadcast systems and improved spatial resolution for both moving and stationary HDTV images with a reduced bandwidth. 相似文献
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本文阐述了欧洲和日本的增强电视的发展背景,现状和存在问题,对中国应如何发展自己的增强电视提出了建议,分析了高清晰度电视系统标准参数制订中应该考虑的重要因素,对中国高清晰度电视发展政策做了归纳。 相似文献
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HDTV亮度信号二维频谱分析 总被引:3,自引:3,他引:0
在MPEG-2中已制定了有关HDTV的国际标准,世界上已经研制出不少HDTV产品,但对于HDTV亮度信号的二维频谱分析的研究不多,因此推导出HDTV亮度信号二维频谱及二维幅特性的数学模型及二维谱图形。 相似文献