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Aerospace and Electronic Systems Magazine, IEEE

Issue 9 • Date Sept. 2006

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Displaying Results 1 - 25 of 25
  • 13th Saint Petersburg International Conference on Integrated Navigation Systems

    Publication Year: 2006 , Page(s): 29 - 30
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  • Members

    Publication Year: 2006 , Page(s): 31
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  • 2006 IEEE Radar Conference

    Publication Year: 2006 , Page(s): 25 - 28
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  • AESS Meetings and Conferences

    Publication Year: 2006 , Page(s): 0_4
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  • IEEE Awards

    Publication Year: 2006 , Page(s): 25
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  • NATO Lectures: Nanotechnology Aerospace Applications - 2006

    Publication Year: 2006 , Page(s): 40 - 41
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  • Previous Pioneer Awards [2004 - 2005]

    Publication Year: 2006 , Page(s): 39
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  • Correspondence

    Publication Year: 2006 , Page(s): 0_2
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  • Awards of the Society

    Publication Year: 2006 , Page(s): 34 - 38
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  • IEEE Aerospace and Electronic Systems Magazine - Sept. 2006

    Publication Year: 2006 , Page(s): 0_1
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  • Table of contents - Vol 21 No 9

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

    Publication Year: 2006 , Page(s): 2
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  • Simulation system of telemetering and telecontrol for unmanned aerial vehicle

    Publication Year: 2006 , Page(s): 3 - 5
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (183 KB) |  | HTML iconHTML  

    The unmanned aerial vehicle (UAV) which is capable to observe the Earth has wide applications and large quantities, such as reconnaissance and surveillance, attack on the ground, fire-proof forest, and marine search and rescue, and so on. The system of simulation composed of tracking, navigation, telecontrol, telemetering, and flight control is introduced in this paper. The method of simulation on telemetering and telecontrol, tracking and position, and target observation and tracking is explained View full abstract»

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  • Radar modelling to improve CFAR performance in the littoral

    Publication Year: 2006 , Page(s): 6 - 11
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (357 KB) |  | HTML iconHTML  

    Littoral operation of radars poses severe signal processing difficulties due to the highly stressing, inhomogeneous clutter. This report describes an initial investigation into the feasibility of utilising site specific radar modelling to provide a localized estimate of the clutter statistics which can then be used to predict the required threshold to maintain a given false alarm rate. The technique has been applied to littoral clutter recordings obtained from the experimental S-band phase array radar, MESAR2. Results are presented for the technique in comparison with a conventional, non-adaptive, cell averaging CFAR. The paper concludes that significant performance enhancements are possible through the use of this new technique View full abstract»

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  • Air traffic control speech recognition system cross-task & speaker adaptation

    Publication Year: 2006 , Page(s): 12 - 17
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (352 KB) |  | HTML iconHTML  

    We present an overview of the most common techniques used in automatic speech recognition to adapt a general system to a different environment (known as cross-task adaptation) such as in an air traffic control system (ATC). The conditions present in ATC are very specific: very spontaneous, the presence of noise, and high speed speech. So, with a typical speech recognizer the recognition results are unsatisfactory. We have to decide on the best option for the modeling: to develop acoustic models specific to those conditions from scratch using the data available for the new environment, or to carry out cross-task adaptation starting from reliable HMM models (usually requiring less data in the target domain). We begin with a description of the main techniques considered for cross-task adaptation, namely maximum a posteriori (MAP), maximum likelihood linear regression (MLLR), and the two together. We have applied each in two speech recognizers for air traffic control tasks, one for spontaneous speech and the other for a command interface. We show the performance of these techniques and compare them with the development of a new system from scratch. We also show the results obtained for speaker adaptation using a variable amount of adaptation data. The main conclusion is that MLLR can outperform MAP when a large number of transforms is used, and MLLR followed by MAP is the best option. All of these techniques are better than developing a new system from scratch, showing the effectiveness of mean and variance adaptation View full abstract»

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  • Military digital avionics fiber-optic network design for maintainability and supportability

    Publication Year: 2006 , Page(s): 18 - 24
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (374 KB) |  | HTML iconHTML  

    The use of avionics fiber optics technology is becoming more prevalent. Optical fiber is immune to electromagnetic interference, gives increased bandwidth, saves space, and reduces weight. If used smartly, fiber optics technology can effectively "future-proof" avionics networks. The Boeing 777 PlaneNet program provided a textbook example of "how to" build and deploy fiber optic networks on commercial aircraft (Anderson and Beranek, 1998). Tactical aircraft, however, do not yet have history to draw upon for operational readiness, particularly in the area of aircraft squadron fiber optic network maintainability and supportability. Military aircraft fiber optic network designs must not only consider the harsh operational and maintenance environment, but also need to be deployed in a maintainable and supportable manner. The term maintainability defines how quickly, easily, and cost effectively an avionics fiber optic network design can return to operational status (whether by preventive or corrective maintenance). Mean time to repair (MTTR) is used to quantify and measure maintainability. Supportability, on the other hand, is the degree to which the avionics fiber optic network design characteristics minimize the logistics resources (people, skill levels, parts, publications, tools, test equipment, space) required to sustain the system's operational availability (AO) at an affordable cost throughout the life of the system View full abstract»

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  • September 2006 Distinguished Lecturers Program

    Publication Year: 2006 , Page(s): 32
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  • GSMs now vote!! [from the Editor-in-Chief]

    Publication Year: 2006 , Page(s): 33
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  • IEEE Aerospace and Electronic Systems Society Organization

    Publication Year: 2006 , Page(s): 42
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  • Distinguished Tutorials Program - an update

    Publication Year: 2006 , Page(s): 43 - 44
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  • 14th Saint Petersburg International Conference on Integrated Navigation Systems 2007 - Call for Papers

    Publication Year: 2006 , Page(s): 45
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  • IEEE AUTOTESTCON 2007 - Call for Papers

    Publication Year: 2006 , Page(s): 46
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  • Student Membership Apolication - 2006 IEEE Aerospace and Electronic Systems Society [advertisement]

    Publication Year: 2006 , Page(s): 47
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  • 2006 IEEE Aerospace and Electronic Systems Society - Membership application

    Publication Year: 2006 , Page(s): 48
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  • Directory of IEEE-AESS Personnel

    Publication Year: 2006 , Page(s): 0_3
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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
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tpace@sentech.dsci.com