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Aerospace and Electronic Systems Magazine, IEEE

Issue 10 • Date Oct. 2006

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Displaying Results 1 - 25 of 26
  • IEEE Aerospace and Electronics Systems Magazine - Oct. 2006

    Publication Year: 2006 , Page(s): C1
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  • [Front cover]

    Publication Year: 2006 , Page(s): nil1
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  • Conference committee

    Publication Year: 2006 , Page(s): nil1
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  • Table of contents - Vol 21 No 10

    Publication Year: 2006 , Page(s): 1
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  • In this issue

    Publication Year: 2006 , Page(s): 2
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  • Nostradamus: An OTH Radar

    Publication Year: 2006 , Page(s): 3 - 11
    Cited by:  Papers (11)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (6791 KB)  

    ONERA, funded by the French Ministry of Defence has conducted the realization and experimentations of the Doppler Skywave OTH radar called NOSTRADAMUS. One of the main characteristics of Skywave OTH radar is the dependence to the ionosphere for successful operation. The use of the HF band allows Skywave OTH radar to bounce radio waves from the ionosphere, receiving tiny signals back from reflecting surfaces as the sea, islands, ships and aircraft. The knowledge of the behavior of the ionosphere in a real time configuration is of primary importance because it influences on the choice of frequencies. Radars systems require developing a real-time frequency management system (FMS) using prediction program or measurements supplied by vertical or oblique sounders. The French OTH radar concept has been developed and implemented so that the radar could be completely autonomous with respect to others "ionospheric information providers." This paper presents the NOSTRADAMUS system, the frequency management system, and shows some results obtained during the past years View full abstract»

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  • Automatic Understanding of ATC Speech

    Publication Year: 2006 , Page(s): 12 - 17
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1360 KB) |  | HTML iconHTML  

    In this paper we make a critical revision of the state-of-the-art in automatic speech processing as applied to air traffic control. We present the development of a new ATC speech understanding system comparing its performance and advantages to previously published experiences. The system has innovative solutions such as detecting the air/ground language spoken by air traffic controllers in an international airport with two official languages and the ability to adapt to new situations by automatically learning stochastic grammars from data, eliminating the need to write expensive and eternally incomplete grammars. A relevant new feature is the use of a speech understanding module able to extract semantically relevant information from the transcription of the sentences delivered by the speech recognizers. Two main assessment objectives are pursued and discussed throughout the paper: the effects of human spontaneity and the lack of linguistic coverage in understanding performance. The potential of this technology, ways of improvement, and proposals for the future are also presented View full abstract»

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  • From Mercury to Pluto: A Common Approach to Mission Timekeeping

    Publication Year: 2006 , Page(s): 18 - 23
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1193 KB) |  | HTML iconHTML  

    The successful launch of the New Horizons spacecraft for a rendezvous with Pluto and Charon and the continuing progress of the MESSENGER spacecraft toward Mercury now positions mankind to unlock mysteries of our solar system from Mercury to Pluto and beyond. Both missions, though very different in concept, use the same generic timekeeping system design. This paper explores how we maintain time on these spacecraft and how we establish on the ground the correlation between spacecraft time and Earth time. It further reviews the sub-millisecond correlation accuracy that has been demonstrated for the MESSENGER mission and the time accuracy we expect to achieve for that mission at Mercury and for the New Horizons mission at Pluto-Charon View full abstract»

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  • Review of Airport Surface Movement Radar Technology

    Publication Year: 2006 , Page(s): 24 - 27
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2772 KB) |  | HTML iconHTML  

    Runway incursion is defined by the FAA as "any occurrence at an airport involving an aircraft, vehicle, person or object on the ground that creates collision hazard or results in a loss of separation with an aircraft taking off, intending to take off, landing or intending to land." A summary of how severe this problem is can be found in a 2001 hearing before the Subcommittee on Aviation. Surface movement radar (SMR) technology has evolved over the years as part of an effort to mitigate runway incursion risks and enhance airport capacity. Surface movement surveillance systems of various types have been installed in major airports as early as the 1960s, and have kept evolving. The most recent system currently being deployed in the US by the FAA is the airport surface movement detection equipment model X (ASDE-X) system. In this system, unlike previous systems, the surface movement radar is just one of several sensors that are used in addition to transponder multilateration and GPS-based position reports, referred to as automatic dependent surveillance - broadcast or ADS-B; however, the SMR is a key subsystem. This paper contains an overview of the state-of-the-art SMR technology and provides an introduction on the use of radar technology for this commercial application. It focuses on the architecture, characteristics and technology of the radar sensor, the characteristics of the clutter and how it affects the performance, effects of multipath, automatic detection and comparison of several sensor architectures. Sensis Corporation has recently completed the testing of a new, improved SMR, which is now part of ASDE-X system. This paper summarizes the main features of this radar View full abstract»

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  • Inspection of Internal Structure of Walls by Subsurface Radar

    Publication Year: 2006 , Page(s): 28 - 31
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (4058 KB) |  | HTML iconHTML  

    This paper deals with the application of ultra-wide band time-domain subsurface radars, equipped with special signal processing techniques, to realize non-invasive image testing of the building walls' internal structure that are made with brick, stone, concrete, reinforced concrete, and other construction materials. There are two normally associated problems: qualitative and quantitative, considered. Limitations and shortcomings of radar imaging, due to inherent physical features as well as signal processing improving the quality of radar images, are discussed. Actual field data are used to illustrate applications of subsurface radar for non-destructive testing of walls' internal regions View full abstract»

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  • Conference Report High-Efficiency Energy, Power, and Travel Reported at 4th IECEC

    Publication Year: 2006 , Page(s): 32 - 38
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  • Overview of AESS Publications

    Publication Year: 2006 , Page(s): 39 - 40
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  • From the Editor-in-Chief

    Publication Year: 2006 , Page(s): 41
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  • Fred Nathanson Memorial Radar Award Nominations Wanted

    Publication Year: 2006 , Page(s): 41
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  • Warren D. White Award for Excellence in Radar Engineering Nominations Wanted

    Publication Year: 2006 , Page(s): 41
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  • In this issue

    Publication Year: 2006 , Page(s): 42
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  • [Commentary]

    Publication Year: 2006 , Page(s): 42
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  • IEEE Annual Election

    Publication Year: 2006 , Page(s): 42
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  • 2007 International Waveform Diversity & Design Conference

    Publication Year: 2006 , Page(s): 43
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  • IEEE Aerospace & Electronic Systems Society Organization

    Publication Year: 2006 , Page(s): 44
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  • Harry Rowe Mimno Awards for 2004 & 2005

    Publication Year: 2006 , Page(s): 45
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  • Distinguished Tutorials Program

    Publication Year: 2006 , Page(s): 45
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  • Distinguished Lecturers Program

    Publication Year: 2006 , Page(s): 46
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  • 40th Annual IEEE International Carnahan Conference on Security Technology

    Publication Year: 2006 , Page(s): 47
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  • Directory of IEEE-AESS personnel

    Publication Year: 2006 , Page(s): nil2
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Aims & Scope

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.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Teresa Pace, PhD EE
Chief Engineer SenTech
SenTech, LLC - A DSCI Company
12601 Research Parkway
Orlando, FL 32826
(407) 207-1900 ext: 2102
(407) 450-0929 (BB)
tpace@sentech.dsci.com