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Aerospace and Electronic Systems Magazine, IEEE

Issue 7 • Date July 2005

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Displaying Results 1 - 25 of 27
  • Ground penetrating radar VIY-2

    Page(s): 16 - 18
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (215 KB)  

    VIY-2 ground penetrating radar (GPR) with unique sounding possibilities and use simplicity is presented at this paper. VIY-2 GPR combines all units (synchronizer, transmitting and receiving modules, powering, and antenna system) into single case. The VIY-2 GPR communicates with computer via standard interface RS232 or USB1.0. Technical solutions utilized by the VIY-2 GPR reduce deployment time and simplify surveying process. The VIY-2 GPR design features and its components interaction are considered at this paper. Some field results are also presented here. The VIY-2 GPR design concept allows reducing the data acquisition time,, optimizing the time-varying gain control function, applying depth-stacking dependence, controlling the surveying window position and interference reducing by pulse repetition frequency randomizing. View full abstract»

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  • Teaching old tricks to new dogs [automatic test equipment]

    Page(s): 3 - 6
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (246 KB)  

    This describes why transferring test programs and fixtures from obsolete automatic test equipment (ATE) to new equipment are not as simple as it should be. No one would argue that technology has made major advances on test in the last 30 years. Today, speed, overall performance, computing power, and software tools are more sophisticated than 20 or 30 years ago, when the first ATE appeared. As these ATE now head for retirement and as the programs they support still have a long life to live, one would think legacy replacement with new ATE would be a simple task. Unfortunately, this is seldom the case. We realize that old ATE had a number of cards up their sleeves to deal with. For example, high voltage technology, lack of computer aided engineering (CAE) data, requirements for parametric tests, extensive usage of the guided probe, and many other aspects might be not so simple to be reproduced with modern, yet powerful, ATE. The paper shall identify the specific constraints involved with old technology and give examples of success stories where new ATE has been adapted to respond to the challenge. Paraphrasing (in reverse) and old saying, it is like "teaching old tricks to new dogs". View full abstract»

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  • Strapdown inertial navigation technology - 2nd edition - [Book review]

    Page(s): 33 - 34
    Save to Project icon | Request Permissions | PDF file iconPDF (159 KB) |  | HTML iconHTML  
    Freely Available from IEEE
  • VXI or PXI test system improvement using DSP

    Page(s): 7 - 10
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (225 KB)  

    The results of a study into the use of distributed digital signal processing (DSP) at the instrument level in a VXI and PXI based test system and the effects on test time. One of the limiting factors in testing mixed signal or analog devices using standard bus based instruments is the transfer speed from the instrument to the controlling computer of large amounts of waveform data. This is important as these types of tests use non-deterministic, quantized signals that must be mathematically processed to extract test information. This processing can either be done at the instrument or at the central controller. If the processing is done at the instrument then only the results are transferred to the controller. If the controller does the processing then the raw data must be transferred to and from the instrument. Using two instruments, one in VXI and one in PXI, this paper measures the effects of typical tests contesting the measurements as done in the central processor as opposed to a distributed DSP processor in each instrument For each acquisition instrument, tests were implemented by capturing the data and moving it to the controlling computer where it was processed to extract test results, or by using the instruments on-board DSP so only the final test results were set to the controlling computer. The study results show that a significant improvement in test time can be made by selecting "smart" instruments for the test system when using PXI or VXI based instruments. View full abstract»

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  • Buried cable sensor with intruder location

    Page(s): 11 - 15
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (312 KB)  

    A buried cable sensor has been added to the Intrepid family of outdoor perimeter intrusion sensors. The sensor with the trademarked name "MICROTRACK" is similar to the "MICROPOINT" fence sensor with precise detection location, sensitivity leveling, and free format zoning. Intruder location is accomplished with low-power ultra wideband frequency stepped radar driving the sensor cables. Target range resolution also allows the use of sensitivity leveling for each individual range bin. This will compensate for differences in soil conductivity along the length of the cable and for metal objects, which may be located in the near field radiation. The design of the MICROTRACK sensor was presented at the 2002 Carnahan Conference in Atlantic City. It has been described as FM-CW radar, however it differs from the generic form in that the frequency is stepped rather than continuously swept and phase code modulation is added to discriminate against interference. The wide bandwidth of the MICROTRACK sensor fills in the s typical of a single frequency radar and provides a more uniform field profile along the entire length of the sensor cables. This describes the testing that has been performed to characterize the system for different environmental conditions. Southwest Microwave, Inc. has procured an open field site of 31 acres of flat desert land for testing the buried cable. Another site in Canada is used for testing with an additional set of weather and soil conditions. Detection patterns, proximity to stationary objects, and various environmental factors will be discussed. Extensive measurements of both electric and magnetic fields along the length and perpendicular to the sensor cables show a detailed map of the multiple frequency surface wave. When the cables are buried, the uniformity of the field is degraded slightly but no deep s are observed. Site testing has confirmed major benefits of the MICROTRACK sensor: - Uniform Detection Zone - Elimination of Deep Nulls - Precise Target Location - Sensitivity Leveling. View full abstract»

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  • The cambridge aerospace dictionary - [Book review]

    Page(s): 35 - 36
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    Freely Available from IEEE
  • Fiber optic gyrocompass superluminescent fiber source

    Page(s): 19 - 20
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (127 KB)  

    The objective of this work is to establish the dependence of characteristics of the fiber optics gyrocompass with respect to the parameters of the superluminescent emission source based on doped optical fiber with rare earth elements, Superluminescent fiber source (SFS), argument the pumping rate election of the SFS to obtain characteristics limits of the fiber optic gyroscope sensibility. View full abstract»

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  • From the editor-in-chief

    Page(s): 37
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  • Signature recognition state-of-the-art

    Page(s): 28 - 32
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    A summarization of one of the most successful behavioral biometric recognition methods: signature recognition. Probably this is one of the oldest biometric recognition methods, with high legal acceptance. Technological advances have made possible new perspectives for signature recognition, by means of capturing devices which provide more than the simple signature image: pressure, acceleration, etc., making it even more difficult to forge a signature. View full abstract»

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  • Mm wavelengths complex Doppler analysis using dark field illumination

    Page(s): 21 - 27
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (336 KB)  

    Experimental results that indicate that at least two fundamental modes of Doppler generation are present when a rotating steel cylinder is broadside illuminated by radar. Improvised bistatic measurements at 77GHz are discussed and second order Doppler effects studied. Complex Doppler returns, consisting of two or more Doppler contributions, are decomposed and studied using empirical methods. In particular, ground illumination techniques are used to study Doppler in the shadow region of a cylinder of circumference 81 wavelengths. It is concluded that the complex Doppler response from the spinning cylinder consists of both direct (first order) and delayed (second order) Doppler components. Further measurements are proposed to study the delayed Doppler effect further. View full abstract»

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  • IEEE Aerospace and Electronic Systems Magazine

    Page(s): 0_1
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  • This month's cover...

    Page(s): 0_2
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  • Table of contents

    Page(s): 1
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  • In this issue - technically

    Page(s): 2
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  • International Radar Symposium 2005

    Page(s): 38
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  • Call for papers

    Page(s): 40
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  • Distinguished lecturers program

    Page(s): 41
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  • Call for papers

    Page(s): 42
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  • IEEE Aerospace & Electronic Systems Society Organization

    Page(s): 43
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  • Microwave & Radar Week in Krakow, Poland

    Page(s): 44
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  • IEEE Aerospace and Electronic Systems Society Chapters

    Page(s): 45
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  • 2006 CIE International Conference on Radar

    Page(s): 46
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  • Announcement

    Page(s): 47
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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.

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Meet Our Editors

Editor-in-Chief
Teresa Pace, PhD EE
Chief Engineer SenTech
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