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1.
《现代电子技术》2015,(12):94-97
为满足多架飞机的实时监控需求,对实时遥测系统的结构和原理进行了研究,使用VC++开发工具以及MapX控件,开发了基于多目标的飞行电子地图软件。软件采用C/S结构设计,并应用MapX控件对Maplnfo地理信息系统进行二次开发。软件能显示多架飞机的位置信息、实时飞行轨迹和导航参数,使地面指挥员和监控人员能够同时地掌握所有飞行器的飞行状态,增强了导航信息的可读性和可视效果,满足了多目标综合监控的需求,对以后的型号试飞任务起到了积极的作用。  相似文献   

2.
介绍地理信息系统(GIS)技术和当前应用,以及Maplnfo软件与传统GIS技术相比在数字地图制作方面的优点,重点阐述了MapInfo在制作电子地图方面的实现方法。通过对MapX控件功能的描述,结合无人驾驶飞艇飞行航线的显示和设置需求,详细地论述了在VC中利用MapX控件开发数字地图显示功能的方法和设计思路,给出了软件设计的流程,实现了飞艇的当前位置、飞行航迹和飞行的动态过程在数字地图上的实时显示,并可在线设置、上传和下载飞行航线。  相似文献   

3.
介绍了在全国短波监测网络中测向定位功能模块的设计与实现。为了实现目标源的定位,系统采用自定义消息来实现命令的发送和数据的接收,采用对各监测站声音和频谱分别进行对比来保证所测信号的一致,利用关系数据库Or-acle保存实时数据,运用交会算法计算最佳目标源经纬度和误差概率椭圆,并将结果显示在以MapX为控件的电子地图上。  相似文献   

4.
李华贵  项志华  李玲  李鹏 《现代电子技术》2006,29(17):125-126,129
介绍了车辆导航定位系统中车载终端的硬件结构与组成原理。重点阐述了车载终端的显示技术,主要介绍了如何使用MapInfo MapX中的OCX组件及Visual C 编程,实现电子地图,并显示车辆的运动轨迹。应用电子地图的车辆导航定位系统具有实时位置与速度的确定、地图信息查询、行程回放及监控等功能。  相似文献   

5.
以实现车辆实时监控与调度管理为目的,详细描述了GPS(全球定位系统)车辆监控管理系统的设计与实现方法。GPS车辆监控管理系统主要由车载终端和监控中心两大部分组成,融合了GPS全球定位技术、无线通信技术和GIS(地理信息系统)三大关键技术。该系统的设计与开发采用了VC++6.0与MapX控件,以及强大功能的SQL Server数据库,通过GPRS(通用分组无线电业务)实现监控中心与车载终端的数据双向传输,可实现车辆监控、调度管理、轨迹回放与报警管理等功能。  相似文献   

6.
王仲满 《电子世界》2013,(10):136+139
在VB6.0编程环境下使用GIS开发工具的MapX控件开发温州旅游景点信息系统,主要包括电子地图的放大、缩小、漫游、选择、图层控制及旅游景点信息查询等功能。该系统可以满足游客对温州旅游景点进行方便查询的要求,具有良好的实用性和发展前景。本文阐述了该系统的功能结构及系统的实现。  相似文献   

7.
本文研究设计了基于互联网的物联网的船舶设备工况监控及报警智能处理系统,分析了系统的功能、给出了系统的整体设计架构,介绍了系统软件功能实现的具体方法。系统通过对船舶工况数据的实时采集、统计、计算、分析、传输,实现对船舶的远程实时监控,同时通过报警时现场照片的采集和传输,实现报警的船上和岸上同时诊断。该系统已装载在某海轮上使用,运行稳定性、可靠性良好,有效实现了船舶内部的智能化管理。  相似文献   

8.
吴永欣 《电光系统》2005,(1):11-12,37
论述了基于MapX控件和GPB导航数据构成的具有车辆导航、地理信息、地理分析和地理查询功能的GIS应用系统的设计和实现。  相似文献   

9.
在深入分析散射链路分析算法的基础上,对散射链路分析进行计算机实现的功能要求、实现方法进行了深入的研究,提出了散射链路分析系统设计方案,该分析系统基于公认的链路分析的数学模型和关键技术,通过采用MapInfo公司的地图控件MapX得到电子地图上的地形、障碍物等数据信息,由VC++编程实现了计算机自动进行散射信道的链路剖面图绘制和链路分析作业,取代了传统的手工作业方式。  相似文献   

10.
基于DDE与Winsock的WinCC数据通信   总被引:1,自引:0,他引:1  
刘红霞  屠袁飞 《通信技术》2010,43(7):207-209
根据生产系统的控制要求,设计了一种基于动态数据交换(DDE)和Winsock的并适用于生产运行环境下的实时监控系统。系统采用PLC为核心控制设备,并以交换机为主要通信设备,构建了控制网络。利用WinCC完成上位机HMI程序设计及数据采集功能,利用VB6.0完成数据通信程序设计。该设计应用DDE技术实现对WinCC的数据采集功能,并利用Winsock控件完成了发送数据到生产调度网的功能,从而搭建了工业现场的信息化管理平台。  相似文献   

11.
From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.  相似文献   

12.
The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.  相似文献   

13.
The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.  相似文献   

14.
Today, micro-system technology and the development of new MEMS (Micro-Electro-Mechanical Systems) are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.  相似文献   

15.
In order to diagnose the laser-produced plasmas, a focusing curved crystal spectrometer has been developed for measuring the X-ray lines radiated from a laser-produced plasmas. The design is based on the fact that the ray emitted from a source located at one focus of an ellipse will converge on the other focus by the reflection of the elliptical surface. The focal length and the eccentricity of the ellipse are 1350 mm and 0.9586, respectively. The spectrometer can be used to measure the X- ray lines in the wavelength range of 0.2-0.37 nm, and a LiF crystal (200) (2d = 0.4027 nm) is used as dispersive element covering Bragg angle from 30° to 67.5°. The spectrometer was tested on Shengnang- Ⅱ which can deliver laser energy of 60-80 J/pulse and the laser wavelength is 0.35 μm. Photographs of spectra including the 1 s2p ^1P1-1s^2 ^1S0 resonance line(w), the 1s2p ^3P2-1s^2 1S0 magnetic quadrupole line(x), the 1s2p ^3P1-1 s^2 ^1S0 intercombination lines(y), the 1 s2p ^3S~1-1 s^2 ^1S0 forbidden line(z) in helium-like Ti Ⅹ Ⅺ and the 1 s2s2p ^2P3/2-1 s622s ^2S1/2 line(q) in lithium-like Ti Ⅹ Ⅹhave been recorded with a X-ray CCD camera. The experimental result shows that the wavelength resolution(λ/△ 2) is above 1000 and the elliptical crystal spectrometer is suitable for X-ray spectroscopy.  相似文献   

16.
High purity organic-tantalum precursors for thin film ALD TaN were synthesized and characterized.Vapor pressure and thermal stability of these precursors were studied.From the vapor pressure analysis,it was found that TBTEMT has a higher vapor pressure than any other published liquid TaN precursor,including TBTDET,TAITMATA,and IPTDET.Thermal stability of the alkyl groups on the precursors was investigated using a 1H NMR technique.The results indicated that the tertbutylimino group is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.Thermal stability of TaN precursors decreased in the following order:TBTDET > PDMAT > TBTEMT.In conclusion,precursor vapor pressure and thermal stability were tuned by making slight variations in the ligand sphere around the metal center.  相似文献   

17.
This paper reviews our recent development of the use of the large-scale pseudopotential method to calculate the electronic structure of semiconductor nanocrystals, such as quantum dots and wires, which often contain tens of thousands of atoms. The calculated size-dependent exciton energies and absorption spectra of quantum dots and wires are in good agreement with experiments. We show that the electronic structure of a nanocrystal can be tuned not only by its size,but also by its shape. Finally,we show that defect properties in quantum dots can be significantly different from those in bulk semiconductors.  相似文献   

18.
A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.  相似文献   

19.
A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.  相似文献   

20.
An improving utilization and efficiency of critical equipments in semiconductor wafer fabrication facilities are concerned. Semiconductor manufacturing FAB is one of the most complicated and cost sensitive environments. A good dispatching tool will make big difference in equipment utilization and FAB output as a whole. The equipment in this paper is In-Line DUV Scanner. There are many factors impacting utilization and output on this equipment group. In HMP environment one of the issues is changing of reticule in this area and idle counts due to load unbalance between equipments. Here we'll introduce a rule-based RTD system which aiming at decreasing the number of recipe change and idle counts among a group of scanner equipment in a high-mixed-products FAB.  相似文献   

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