Proceedings of 14th Digital Avionics Systems Conference最新文献_第5页

RF coupling measurements on passenger aircraft avionics exposed to cavity-mode excitation 空腔模激励下客机航空电子设备射频耦合测量

Proceedings of 14th Digital Avionics Systems Conference Pub Date : 1995-11-05 DOI: 10.1109/DASC.1995.482933

D.M. Johnson, M. Hatfield, G. Preyer

{"title":"RF coupling measurements on passenger aircraft avionics exposed to cavity-mode excitation","authors":"D.M. Johnson, M. Hatfield, G. Preyer","doi":"10.1109/DASC.1995.482933","DOIUrl":"https://doi.org/10.1109/DASC.1995.482933","url":null,"abstract":"The performance of avionics installed in aircraft which fly through high-intensity electromagnetic environments is an increasingly important issue. The authors have completed the second phase of testing of the electromagnetic reverberation characteristics of a transport aircraft. A part of this testing was the measurement of the coupling of radio-frequency (RF) energy to selected avionics boxes of a decommissioned Boeing 707 aircraft and a simulated avionics box when exposed to cavity-mode excitation, The aircraft avionics boxes were instrumented to measure the RF energy coupling to: (1) an interior component lead and (2) an interior wire leading to the aircraft wiring harness connector plug. The simulated box was instrumented to measure RF coupling to an interior component lead. Tests, conducted on a 707, included excitation of the aircraft within the avionics bay, cockpit and passenger cabin, utilizing mode-stirring techniques. Follow-on tests were and continue to be performed in the Mode-Stirred Chamber (MSC). The aircraft and MSC tests are intended to demonstrate that the RF coupling characteristics of the actual and simulated avionics boxes measured within the MSC constitute valid descriptions of the RF coupling characteristics of the same boxes when installed in the aircraft. Data obtained on one of the avionics boxes during testing on the aircraft and in the will be presented.","PeriodicalId":125963,"journal":{"name":"Proceedings of 14th Digital Avionics Systems Conference","volume":"2639 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127483473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Developing integrated hardware-software reliability models: difficulties and issues [for digital avionics] 开发集成的软硬件可靠性模型:困难和问题[用于数字航空电子设备]

Proceedings of 14th Digital Avionics Systems Conference Pub Date : 1995-11-05 DOI: 10.1109/DASC.1995.482829

M. Boyd, C. Monahan

引用次数: 12

Autolanding a 737 using GPS and Integrity Beacons 使用GPS和完整性信标自动着陆737

Proceedings of 14th Digital Avionics Systems Conference Pub Date : 1995-11-05 DOI: 10.1109/DASC.1995.482940

C. Cohen, H. S. Cobb, D. Lawrence, B. Pervan, J. Powell, B. Parkinson, G. J. Aubrey, W. Loewe, D. Ormiston, B. McNally, D. Kaufmann, V. Wullschleger, R. Swider

{"title":"Autolanding a 737 using GPS and Integrity Beacons","authors":"C. Cohen, H. S. Cobb, D. Lawrence, B. Pervan, J. Powell, B. Parkinson, G. J. Aubrey, W. Loewe, D. Ormiston, B. McNally, D. Kaufmann, V. Wullschleger, R. Swider","doi":"10.1109/DASC.1995.482940","DOIUrl":"https://doi.org/10.1109/DASC.1995.482940","url":null,"abstract":"Differential GPS and miniature, low-cost Integrity Beacon pseudolites were used to carry out 110 successful automatic landings of a United Boeing 737-300 aircraft. The goal was to demonstrate Required Navigation Performance including accuracy and integrity-for Category I11 Precision Landing using GPS. These autopilot-in-the-loop flighe tests using GPS Integrity Beacons (low-power, ground-based marker beacon pseudolites placed under the approach path) furnish evidence that GPS can provide the full performance necessary to meet the stringent specifications of Category 111. It has been demonstrated that Integrity Beacons can provide consistent accuracies on the order of a few centimeters. But perhaps even more important, this centimeter-level accuracy coupled with the built-in geometrical redundancy provided by Integrity Beacon ranging provides an exceptional level of intrinsic system integrity. This integrity is calculated to be easily better than the required one part in a billion probability of missed detection. Passenger safety is improved significantly because this level of integrity is achieved independently from ground-based monitors through Receiver Autonomous Integrity Monitoring (RAIM). For the flight tests, the GPS receiver and single-channel navigation computer calculated precise positions and calculated glide path deviations. An analog interface provided ILS localizer and glideslope signals to the autopilot. The 737 was equipped with a dual-channel flight control system which was previously certified for Category IIIA landings. The autolands were performed through touchdown without rollout guidance, The series of 110 automatic landings were carried out at NASA's Crows Landing facility in California over a four-day period during the week of October 10, 1994. A laser tracker was used as an independent means for characterizing flight performance. The feasibility demonstration was sponsored by the FAA.","PeriodicalId":125963,"journal":{"name":"Proceedings of 14th Digital Avionics Systems Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132686564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

A human factors approach to the development and evaluation of the graphical weather service 图形气象服务发展与评价的人为因素方法

Proceedings of 14th Digital Avionics Systems Conference Pub Date : 1995-11-05 DOI: 10.1109/DASC.1995.482838

A. T. Lind, A. Dershowitz, D. Chandra, S. Bussolari

引用次数: 1

New roles for aeronautical charts through electronic display media 电子显示媒体对航海图的新作用

Proceedings of 14th Digital Avionics Systems Conference Pub Date : 1995-11-05 DOI: 10.1109/DASC.1995.482839

D. Hannon

引用次数: 1

Attitude and articulation control for the Cassini spacecraft: a fault tolerance overview 卡西尼号航天器姿态和关节控制:容错概述

Proceedings of 14th Digital Avionics Systems Conference Pub Date : 1995-11-05 DOI: 10.1109/DASC.1995.482828

G. Brown, D. Bernard, R. Rasmussen

引用次数: 51

Assessing the capabilities of military software maintenance organizations 评估军事软件维护组织的能力

Proceedings of 14th Digital Avionics Systems Conference Pub Date : 1995-11-05 DOI: 10.1109/DASC.1995.482914

M. Schrank, A. Anderson, M. E. Bisignani, G.W. Boyce

引用次数: 4

Software development tools for embedded systems 嵌入式系统的软件开发工具

Proceedings of 14th Digital Avionics Systems Conference Pub Date : 1995-11-05 DOI: 10.1109/DASC.1995.482917

S. Kapur, C. Sriprasad

{"title":"Software development tools for embedded systems","authors":"S. Kapur, C. Sriprasad","doi":"10.1109/DASC.1995.482917","DOIUrl":"https://doi.org/10.1109/DASC.1995.482917","url":null,"abstract":"Software quality and availability (completion) is highly impacted by the tools used in each stage of development. By focusing on tools issues, this paper increases the developers' focus to formulating a sound software development environment. The starting point of system software development is requirement analysis and design. Once the system is defined, its functions are allocated to distinct hardware or software items, and interfaces between these items are defined. Software requirement analysis is the process of specifying software function, performance, interfaces and design constraints. The next stage is preliminary design. This is followed by detailed design that may be represented graphically or in a combination of programming language. The design is then taken up for implementation which involves writing code for all units and testing them individually. The final stage is integration and software component level testing. Tools for embedded system development include: cross compilation systems, in-circuit tools, simulators, debuggers etc. The features, benefits and tradeoffs of these tools, and how they apply to each stage of software development, are examined. This will provide the designer with a comprehensive suite of software development tools that support embedded designs.","PeriodicalId":125963,"journal":{"name":"Proceedings of 14th Digital Avionics Systems Conference","volume":"48 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134073280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Comanche Modular Controls and Displays System 科曼奇模块化控制和显示系统

Proceedings of 14th Digital Avionics Systems Conference Pub Date : 1995-11-05 DOI: 10.1109/DASC.1995.482841

K. Nerius

{"title":"Comanche Modular Controls and Displays System","authors":"K. Nerius","doi":"10.1109/DASC.1995.482841","DOIUrl":"https://doi.org/10.1109/DASC.1995.482841","url":null,"abstract":"The current RAH-66 Comanche ScouVAttack Helicopter in development for the U.S. Army uses an advanced Controls and Displays architecture coupled to an all glass cockpit. Advanced Mission Computers (MCs) drive state of the art crew station displays. This combination provides unmatched targeting capability while reducing the pilot's and copilot's workload. Each Crew Station (see Figure 1) consists of two primary display elements, a color 640 x 480 pixel Active Matrix Liquid Crystal Display (AMLCD) called the MultiFunction Display (MFD) and a monochromatic 640 x 480 pixel AMLCD MFD. Side by side mounting of the two units in each crew station provides maximum display surface within a limited field of view. Data transmitted to the MFDs includes artificial flight instrument displays, digital map data for navigation and threat avoidance, and high resolution FLIR images for automated and manual threat targeting. Two AMLCD Multi-Purpose Displays (MPDs) with embedded graphics generators augment the MFDs. The MPDs, situated to the lower left and right of the MFDs, provide situational data on weapons status, radio selection, and system health. They also provide a MILSTD-1553 interface to the Flight Control Computers to provide a limp home vertical situation display capability in the event both mission computer systems fail. A dedicated Display Graphics Subsystem (DGS) hosted in the MCs generates the video images for the MFDs. The DGS is a three SEM-E module set - a Graphics Module (GM) with embedded Intel i960 processor and custom graphics engine Application Specific Integrated Circuits (ASICs), a Video Distribution Module (VDM) that merges graphics with digital map or sensor images and outputs the composite video over fiber-optic links to the MFDs, and a Map Generator Module (MGM) that creates moving terrain plan and paper chart images. The modules are programmed using a high level Display Graphics Language (DGL) that permits the user to develop and maintain display formats with a simple yet powerful interface.","PeriodicalId":125963,"journal":{"name":"Proceedings of 14th Digital Avionics Systems Conference","volume":"628 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113982112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The general aviation technology revolution 通用航空技术革命

Proceedings of 14th Digital Avionics Systems Conference Pub Date : 1995-11-05 DOI: 10.1109/DASC.1995.482831

F. Williams

引用次数: 1