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22 research outcomes, page 1 of 3
  • publication . Article . 2008
    Open Access
    Authors:
    Francesca Giordano; Alberto Marini;
    Persistent Identifiers
    Publisher: Hindawi Limited

    <jats:p>Land degradation and desertification processes represent a serious problem in many areas of Sardinia (Italy), as in the Nurra region where urbanization, overgrazing, and fires have induced environmental degradation and rapid land-use change. In this study, using...

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  • publication . Article . 2015
    Open Access English
    Authors:
    Naveen S. Gowdayyanadoddi; James T. Curran; Ali Broumandan; Gérard Lachapelle;
    Persistent Identifiers
    Publisher: Hindawi Publishing Corporation

    <jats:p>Multipath propagation is one of the major sources of error in GPS measurements. In this research, a ray-tracing technique is proposed to study the frequency domain characteristics of multipath propagation. The Doppler frequency difference, also known as multipat...

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  • publication . Article . 2010
    Open Access English
    Authors:
    Toshiaki Iwata; Tomonari Suzuyama; Michito Imae; Yuji Hashibe;
    Persistent Identifiers
    Publisher: Hindawi Publishing Corporation

    <jats:p>The remote synchronization system for the onboard crystal oscillator (RESSOX) realizes accurate synchronization between an atomic clock at a ground station and the QZSS onboard crystal oscillator, reduces overall cost and satellite power consumption, as well as ...

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  • publication . Article . 2008
    Open Access
    Authors:
    P. L. Herselman; C. J. Baker; H. J. de Wind;
    Persistent Identifiers
    Publisher: Hindawi Limited

    <jats:p>The coherent temporal characteristics of medium-to-low grazing angle sea clutter and small boat reflectivity are considered for different radar waveforms under a range of environmental conditions and geometrical configurations. Accurate empirical modelling of se...

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  • publication . Article . 2017
    Open Access
    Authors:
    Sakpod Tongleamnak; Masahiko Nagai;
    Persistent Identifiers
    Publisher: Hindawi Limited

    <jats:p>Performance of Global Navigation Satellite System (GNSS) positioning in urban environments is hindered by poor satellite availability because there are many man-made and natural objects in urban environments that obstruct satellite signals. To evaluate the avail...

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  • publication . Article . 2015
    Open Access
    Authors:
    Richard Van Der Pryt; Ron Vincent;
    Persistent Identifiers
    Publisher: Hindawi Limited

    <jats:p>Automatic Dependent Surveillance-Broadcast (ADS-B) is an air traffic surveillance technology in which aircraft transmit position and identification. The development of space-based ADS-B will allow precise control of aircraft in areas that are not covered by rada...

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  • publication . Article . 2011
    Open Access English
    Authors:
    D. Amarsaikhan; V. Battsengel; E. Egshiglen; R. Gantuya; D. Enkhjargal;
    Persistent Identifiers
    Publisher: Hindawi Publishing Corporation

    <jats:p>The aim of this study is to analyze the urban land use changes occurred in the central part of Ulaanbaatar, the capital city of Mongolia, from 1930 to 2008 with a 10-year interval using geographical information system (GIS) and <jats:italic>very</jats:italic> hi...

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  • publication . Article . 2008
    Open Access
    Authors:
    Timothy R. Field; Simon Haykin;
    Persistent Identifiers
    Publisher: Hindawi Limited
    Project: NSERC

    <jats:p>We review experimental evidence for the nonlinearity of sea clutter and the role of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>z</mml:mi></mml:math>-parameter or Mann-Whitney rank-sum statistic in quantifying this nonlinear behavior in ...

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  • publication . Article . 2013
    Open Access
    Authors:
    Han Chunhao; Cai Zhiwu; Lin Yuting; Liu Li; Xiao Shenghong; Zhu Lingfeng; Wang Xianglei;
    Persistent Identifiers
    Publisher: Hindawi Limited

    <jats:p>The time model of Beidou satellite clocks is analyzed. The general relations of satellite clocks with the system time are studied. The error sources of two-way radio time transfer between satellites and uplink stations are analyzed. The uncertainty of type A is ...

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  • publication . Article . 2012
    Open Access English
    Authors:
    Masahiko Nagai; Apichon Witayangkurn; Kiyoshi Honda; Ryosuke Shibasaki;
    Persistent Identifiers
    Publisher: Hindawi Publishing Corporation

    <jats:p>An unmanned aerial vehicle- (UAV-) based monitoring system is developed as an intermediate system between aerial survey and ground survey. All the measurement tools are mounted on the UAV to acquire detailed information from low altitudes which is different from...

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22 research outcomes, page 1 of 3