机载多功能信息显示技术研究

机载多功能信息显示技术通过综合不同功能的信息处理和显示,能够提供飞行员高效的飞行操作,提高飞行的安全保障能力。文章对机载多功能信息显示技术的核心功能,包括电子航图、空中交通信息、气象信息、航行情报信息的实现和关键技术进行研究,给出了相应显示界面的设计示意并在实际中得到了应用。     

民航导航台电磁环境测试过程及分析

0 引言 民航导航台是以各种地面和机载导航设备向飞机提供方位、距离和位置信息,以保障飞机在昼夜间各种气象条件下的安全飞行;负责指挥飞机的起飞、降落以及飞行高度、飞行速度等重要参数.     

利用DirectX技术再现载机飞行过程

在机载测量设备飞行试验中,载机的飞行姿态和航迹对设备的测量精度影响很大。本文研究了如何使用微软DirectX9.0中的Direct3D、DirectDraw、DirectSound等技术再现载机飞行过程,利用Visual C 和DirectX SDK实现了真实感较强的实时图形仿真。通过在地面PC机上重现载机飞行过程,可以减少试验飞行架次,降低试验成本。     

导航定位技术（卫星导航系统）（续8）

38飞机自主完好性监视 airborne autonomous integrity monitoring(AAIM)利用飞机上各种导航设备的冗余测量信息进行一致性检测，以判定导航信号完好性的一种技术。其原理与RAIM技术相似，但用于一致性检验的信号除了GPS导航信号外，还包括其他机载导航设备，如气压高度表、     

机载雷达地杂波仿真分析

分析了机载预警雷达的地杂波特性 ;针对影响地杂波的参数如载机的飞行速度、飞行高度以及载机飞行方向与雷达天线主波束方向的夹角等 ,进行了仿真分析。     

联合战术微波着陆系统机载信号处理

本文描述了联合战术微波着陆系统(TTMLS)机载角度接收机中的信号处理技术,即如何利用综合化数字电子设备设计技术和与飞机结构有关的天线,实现全天候进场和着陆引导.综合化电子设备能在飞机所处的一个极宽范围内检测MLS信号并进行信号处理,为整个军用飞行控制系统和飞机座舱显示给出水平、垂直和航距引导信息.该系统能保证陆海空三军及民用导航的兼容性.     

一个实用的飞机姿态线产生器

现代机载火控雷达下视显示器的屏幕显示内容,除了需要考虑具有类似地面雷达显示器上的相应功能外,往往还要考虑到适应空战及载机的实际需要,增添某些表征机上武器系统及载机飞行状况的“特色信息”。指示载机飞行姿态的显示信息——飞行姿态线就是其中较有代表性的一种。它可以指示出飞机与地平面的相对关系,使飞行员对载机的瞬时运动有一个比较直观的自我感觉,从而抓住有利战机,克敌制胜。     

机载多模雷达显示处理器

现代战术机载多模雷达系统可产生陆海测绘图象和武器制导图象,并显示空战中本机周围其它的飞机。该系统必须实时、准确、清晰地为飞行员和机上其他人员提供大量信息。可编程信号处理器(PSP)完成检测目标和产生地图图象的处理。这些系统包括一个专用的硬件单元,即显示处理器单元(DPU)。该单元作为PSP的附加设备,将信息格式化形成图象,在电视式显示监视器上显示。DPU也显示由其它飞机系统提供的专用符号和字母数字信息。 本文介绍一种显示处理器单元(DPU),为机载多模雷达系统产生显示图象。所述DPU的特点是在雷达没有信号发射时能进行显示更新。雷达图象一旦形成,由航空电子设备系统提供的信息可以改变显示图象的位置,按这种模式,载机不易遭受电子干扰。在正常工作期间,该特点还对显示清晰度有显著改善。 本文也讨论了机载多模雷达显示模式和产生显示画面的设备以及所采用的技术。     

总线与总线结构

0610302导航显示管理计算机的设计及关键技术〔刊,中〕/郑毓琦//航空计算技术.—2005,35(4).—53-56(L)导航信息显示管理计算机通过人机交互向飞机驾驶人员提供各种飞行状态及飞行指引参数,本文以某飞机测控平台辅助导航显示管理计算机设计实现为例,介绍了导航信息显示管理计算机的工作方式、工作流程并探讨了导航信息显示管理计算机的设计特点和关键技术。参40610303芯片数据总线用双低功率和串音免疫编码方案=Duallow-Power and Crosstalk i mmune encoding scheme foron-chip data buses〔刊,英〕/Z.Khan,A.T.Erdogan//Electronics …     

机载塔康无源自身导航可行性探讨

本文提出一种利用塔康机载接收机方位测量功能实现飞机电磁静默条件下无源自身导航的方案。该方案利用两台小型机载塔康设备接收机，分别接收地面两个已知位置坐标的塔康信标发射的方位信息，来推算飞机相对塔康信标发射机的相对位置，从而实现飞机的无源自身导航。     

Biomedical microsystems for minimally invasive diagnosis and treatment

Great significant progress has been made in the development of biomedical microdevices in recent years, and these devices are now playing an important role in diagnosis and therapy. This paper presents a review of applications of microelectromechanical systems (MEMS) devices for in vivo diagnosis and therapy, and endoscopic- and catheter-based interventions. MEMS technology has enabled the further development of advanced biomedical microdevices for use in the human body by integration of sensors, actuators, and electronics into small medical devices for use in the body. In this paper, we discuss three categories of such devices: navigation systems, sensors and actuators for catheters and endoscopes, and other minimally invasive techniques. A brief introduction to principles, device structures, packaging, and related issues is presented.     

Diamond transistor performance and fabrication

The author reviews some of the device properties of diamonds, as well as recently developed diamond device fabrication techniques for high-frequency, high-power transistors. Two advantages of diamond over other semiconductors used for high-frequency, high power devices are its high thermal conductivity and high electric-field breakdown. Homoepitaxial diamond has been grown by both plasma and hot-filament techniques. The device properties of homoepitaxial diamond produced by the hot-filament technique are reviewed. Much of the development necessary for the production of diamond devices already exists. Doping by homoepitaxy, diamond etching, device quality SiO₂-diamond interface, and ohmic contact technology are reviewed. The remaining problems are the development of large area single crystal diamond substrates, improvement of doping techniques, and refinement in ohmic contact technology     

基于智能接口的音频系统设计

在传统的底层硬件体系结构中,一个接口只能连接同种设备。在此,提出智能型接口技术的解决方案,使同一个接口可以连接异种异构设备,将音频系统与智能接口技术结合在一起,进一步完善了当前设备的应用,提高了现有资源的利用率。支持常用的USB存储设备和SD存储设备。     

IEEE standard 488 and microprocessor synergism

The assembly and use of more new and versatile instrumentation systems is now enhanced dramatically with the widespread application of IEEE Standard 488-1975, "Digital Interface for Programmable Instrumentation." This Standard interface provides an easy-touse high performance concept that links instruments, calculators or computers, and peripheral devices to function as automated instrumentation systems. Microprocessor technology applied to both smart instrumentation and the implementation of IEEE Standard 488's interface functions provides still further benefits to system designers and users. This article describes both the interface function concepts important to instrumentation systems and the roles played by IEEE Standard 488 and microprocessor techniques in support of these functional concepts. Microprocessor and IEEE Standard 488 interface techniques combine to provide designers and users with significant new tools for improved product performance, something neither technology alone could provide. In the near future, special LSI chips optimized to integrate the two technologies should further enhance the benefits for all concerned.     

Monolithic InGaAsP optoelectronic devices with silicon electronics

The interface between optoelectronic devices and microelectronic circuits is the crucial component in the further development of optical communications, calling for inexpensive mass-produced solutions. We present a procedure for how these diverse elements can be monolithically integrated. A stringent requirement is the compatibility with existing fabrication techniques of microelectronic circuits in silicon. We demonstrate the feasibility of our method by the monolithic integration of a photodetector, based on InGaAs-InP, with a three-stage MOS amplifier on a Si substrate in (100) crystallographic orientation. Basic performance figures (dark current, sensitivity) are comparable to those obtained with test structures on the native InP substrate. We show that the developed technologies can be extended to light-emitting diodes and laser structures displaying efficient electroluminescence     

RapidIO总线在组合导航系统中的应用

简要地从 RapidIO 的主要技术特点、体系结构、系统拓扑、协议层次和流量控制等方面对其进行分析,提出了一种基于 RapidIO 总线的组合导航系统的架构方案。通过指定高性能包交换互连技术,在系统内的微处理器、DSP、FPGA、通信和网络处理器以及外设之间进行数据和控制信息传输,RapidIO 架构消除了传统共享总线的瓶颈问题,极大地提高了系统整体性能。     

脑-机接口技术综述

脑-机接口是在人脑与计算机或其它电子设备之间建立的直接的交流和控制通道,通过这种通道,人就可以直接通过脑来表达想法或操纵设备,而不需要语言或动作,这可以有效增强身体严重残疾的患者与外界交流或控制外部环境的能力,以提高患者的生活质量.脑-机接口技术是一种涉及神经科学、信号检测、信号处理、模式识别等多学科的交叉技术.本文对脑-机接口技术的发展、研究现状、工作原理以及涉及的关键技术进行了较为详细地综述,在总结脑-机接口技术存在问题的基础上,探讨了该领域进一步研究的方向.     

一种模拟转发器标校方法的研究

概述了卫星导航系统的时间同步问题和卫星导航的设备零值及其标校问题。阐述了模拟转发器标校的工作原理,在此基础上对模拟转发器标校的关键设计技术进行了分析,并针对卫星导航系统提出了基于模拟转发器标校技术的设备零值标校平台,该平台能适应多种卫星导航设备的零值标校。基于模拟转发器标校技术的标校平台能实现发射和接收设备零值的完全分离,并可方便地实现标校自动化。通过与绝对标校和基准差分法标校的比较,该标校平台用于卫星导航系统的设备零值标校具有独特优势。     

Wireless User Perspectives in Europe: HandSmart Mediaphone Interface

HandSmart is one example of wearable device that can be used as a user interface for advanced mediaphones and it is based on MARISIL a Mobile Augmented Reality Interface Sign Interpretation Language. This paper will describe the interface and some of the applications of these new types of personal devices. The user-centered development methodology is discussed in brief at the end of the paper. Evolutions in technology have provided a variety of new opportunities for exploring and discovering virtual 3D worlds. Head-mounted displays and data gloves enable us to interact and immerse much better into the artificial generated 3D environment. Such devices have been advertised in the entertainment media and are recognized by the public as the symbols of virtual reality (VR). Augmented Reality that has the attribute of being more related to real world than VR by overlaying virtual sounds, feelings or visions onto our senses within the real world, can therefore extend our natural experiences. The authors believe that the new generation of mediaphones can embed these new techniques.     

Applying user-centred design for smartwatch-based pedestrian navigation system

ABSTRACT

The characteristics of a smartwatch impose several challenges regardig the design of a pedestrian navigation aid. This paper illustrates how landmark-based pedestrian navigation systems for smartwatches can be developed, considering the small screen sizes as well as the very limited interaction capacities of these wrist-worn devices. Particularly, by the use of a user-centred design approach, an initial user interface was developed, tested, and refined in two field experiments to create a final user interface. A combination of map view and direction view was proposed, where the map view provides an overview of the environment and route, while the direction view gives clear instructions (turning information) for decision points. The interface was further enhanced by the use of vibrations before decision points. In addition, landmarks were carefully considered and incorporated into both map view and direction view. The field experiments showed that these key features of the revised interface can effectively support pedestrian navigation via smartwatches.