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Aerospace and Electronic Systems Magazine, IEEE

Issue 7 • Date July 1996

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Displaying Results 1 - 9 of 9
  • Reality today was fantasy yesterday

    Publication Year: 1996
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (247 KB)  

    A short review of the background and press-reported evolution of the conception, reduction to practice, and everyday use of electronic tracking bracelets for criminals known as the Crime Deterrent Transponder System (CDTS). View full abstract»

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  • "Multitarget-Musitisensor Tracking; Principles and Techniques" [Book Review]

    Publication Year: 1996
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | PDF file iconPDF (369 KB)  
    Freely Available from IEEE
  • Neural networks in nonlinear aircraft flight control

    Publication Year: 1996 , Page(s): 5 - 10
    Cited by:  Papers (14)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (540 KB)  

    This paper describes an approach for incorporating a neural network with real-time learning capability in a flight control architecture. The architecture is also applicable, in general, for the control of processes described by nonlinear differential equations of motion in which there exists a control for each degree of freedom. The main features are that the defining equations of motion for the process to be controlled are poorly known with respect to their functional forms, and that the functional forms, themselves, may undergo sudden and unexpected variation. It is well known that such systems are difficult to control, particularly when the effect of the control action enters nonlinearly. Numerical results based on 6DOF simulations of a high performance aircraft are presented to illustrate the potential benefits of incorporating neural networks as a part of a flight control system architecture View full abstract»

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  • The radiant angle of GPS satellite antenna affecting the applied altitude of GPS in a space vehicle

    Publication Year: 1996 , Page(s): 35 - 38
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (320 KB)  

    In this paper, the advantages and development of GPS applied in a space vehicle are introduced first. Then, the software employed to calculate the applied altitude of GPS in a space vehicle is explained. The detailed software flowchart is also given, and the process of choosing used GPS satellites is described in detail. In order to study the receiving condition in a space vehicle, we also make a simulating calculation with our software. The results of receiving GPS satellites over a certain place are given. The paper has not only the value for using GPS in a space vehicle, but also the significance for an aircraft whose navigation system is GPS View full abstract»

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  • The status of qualification of a new separator system for advanced aerospace battery cells

    Publication Year: 1996 , Page(s): 27 - 30
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (324 KB)  

    A nickel cadmium cell system which utilizes a polypropylene separator impregnated with polybenzimadazole, and which shows promise of providing an aerospace battery with performance equivalent to Super NiCd, and yet is more cost effective, is described. Background information, cell construction information, detailed test program information and data, and status of qualification are given View full abstract»

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  • Neural networks: implementations and applications

    Publication Year: 1996 , Page(s): 11 - 16
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (504 KB)  

    Artificial neural networks, also called neural networks, have been used successfully in many fields including engineering, science and business. This paper presents the implementation of several neural network simulators and their applications in character recognition and other engineering areas View full abstract»

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  • Unmanned space vehicle navigation by GPS

    Publication Year: 1996 , Page(s): 31 - 34
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (744 KB)  

    In this paper, flight-path deviation in the navigation of unmanned space vehicles by global positioning system (GPS) is analyzed. A new method to calculate flight-path deviation by means of coordinate transforming is presented and the software of navigation and control is designed. This software is practical and effective for navigation by GPS with some characteristics including high-speed, high accuracy, real-time positioning and the use of digital mapping technique View full abstract»

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  • DGPS-based aircraft flight guidance/test system

    Publication Year: 1996 , Page(s): 23 - 26
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (448 KB)  

    The utilization of the GPS system for Aircraft Flight Guidance/Test (AFGT) is a research project in China. The paper describes the concepts and the technical realization of such a system, including three components: ground subsystem, on-board subsystem and data communication link using TDMA technique. The purpose of the proposed AFGT system is to calibrate and verify performance of an on-board radar. Therefore, it must meet the requirements of evaluation of radar performances in several areas: accuracy, coverage range, and others. The AFGT System's displays are separately: a Moving Colored Digital Map on which flight trajectories, waypoints, and heights of aircrafts are clearly marked; and a Polar Coordinate Figure on which the bearings, headings, and distances of aircrafts relative to the origin of the ground control center are shown. The AFGT may monitor and guide several aircrafts flying in the pointed airspace. It support airport surface surveillance and air traffic control at the terminal area. A real-time software package RTTEST, which includes tracking display software and on-flight test software for radar evaluation, has conducted simulation with satisfactory position accuracy View full abstract»

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  • Commercialization of advanced batteries

    Publication Year: 1996 , Page(s): 17 - 22
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (476 KB)  

    Mader & Associates has been working as a contractor for the South Coast Air Quality Management District (District) as well as domestic and off-shore battery developers for the past several years. During this period, it has performed various assessments of advanced battery technology as well as established the Advanced Battery Task Force. The following paper is Mader's view of the status of battery technologies that are competing for the electric vehicle (EV) market being established by the California Air Resources Board's Zero Emission Vehicle (ZEV) mandate. The ZEV market is being competed for by various advanced battery technologies. And, given the likelihood of modifications to the Mandate, the most promising technologies should capture the following market share during the initial 10 years: lead-acid-8.4%; nickel metal hydride-50.8%; sodium nickel chloride-7.8%; and lithium ion-33.0%. However, today there is much less certainty associated with EV market prediction due to changes in the ZEV regulations View full abstract»

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The IEEE Aerospace and Electronic Systems Magazine publishes articles and tutorials concerned with the various aspects of systems for space, air, ocean, or ground environments.

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