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IEEE Transactions on Aerospace and Electronic Systems

Issue 3 • Date July 2005

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Displaying Results 1 - 25 of 42
  • IEEE Transactions on Aerospace and Electronic Systems - Table of contents

    Publication Year: 2005, Page(s): 0_1
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  • IEEE copyright transfer form

    Publication Year: 2005, Page(s): 02
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  • From the editors

    Publication Year: 2005, Page(s): 769
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  • Nonlinear adaptive spacecraft attitude control using solar radiation pressure

    Publication Year: 2005, Page(s):770 - 779
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (420 KB) | HTML iconHTML

    Spacecraft and interplanetary probes orbiting at high altitudes experience forces due to solar radiation pressure, which can be used for maneuvering. The question of large angle pitch attitude maneuvers of satellites using solar radiation torque is considered. For pitch axis maneuver, two highly reflective control surfaces are used to generate radiation moment. The solar radiation moment is a comp... View full abstract»

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  • Two-step optimal estimator for three dimensional target tracking

    Publication Year: 2005, Page(s):780 - 793
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (819 KB) | HTML iconHTML

    This study presents an adaptation of a novel estimation methodology to the general nonlinear three-dimensional problem of tracking a maneuvering target. The two-step optimal estimator (TSE) suggests an attractive alternative to the standard extended Kalman filter (EKF). A superior performance is accomplished by dividing the estimation problem into two steps: a linear first step and a nonlinear sec... View full abstract»

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  • Temporally staggered sensors in multi-sensor target tracking systems

    Publication Year: 2005, Page(s):794 - 808
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (853 KB) | HTML iconHTML

    For a multi-sensor target tracking system, the effects of temporally staggered sensors on system performance are investigated and compared with those of synchronous sensors. To capture system performance over time, a new metric, the average estimation error variance (AEV), is proposed. For a system that has N sensors with equal measurement noise variance, numerical results show that the optimal st... View full abstract»

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  • Emitter number estimation from pulse trains using the GIC

    Publication Year: 2005, Page(s):809 - 818
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (361 KB) | HTML iconHTML

    An information theoretic criterion based approach for estimating the number of emitters from a set of interleaved pulse trains is proposed. In the approach, a new pulse signal model is formulated to handle large number of pulses. The approach is based on the application of the general information criteria (GIC) and has the advantage of not requiring any threshold setting procedures. When compared ... View full abstract»

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  • Line-of-sight-pointing for satellites in high altitude inclined elliptic orbits

    Publication Year: 2005, Page(s):819 - 829
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (726 KB) | HTML iconHTML

    With a growing demand for space communications and resulting overcrowding of geostationary orbit (GEO), the importance of high altitude inclined elliptic orbits is gaining impetus. However, the satellites in these orbits suffer from a severe problem of apparent periodic angular drift around their line-of-sight. This paper addresses this problem and proposes a cost effective method based on tether ... View full abstract»

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  • Analytic study of Doppler-based handover management in LEO satellite systems

    Publication Year: 2005, Page(s):830 - 839
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (443 KB) | HTML iconHTML

    The problem of dynamic handover management in low Earth orbit (LEO) satellite systems is addressed. Particularly, an analytical study of a newly proposed method for handover management, called dynamic Doppler-based handover prioritization scheme (DDBHP), is presented. DDBHP utilizes Doppler shift monitoring of each communicating user terminal onboard the satellite and geometric characteristics to ... View full abstract»

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  • Applications of level crossing theory to target intervisibility: to be seen or not to be seen?

    Publication Year: 2005, Page(s):840 - 852
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1908 KB) | HTML iconHTML

    Here we discuss intervisibility (the existence of an unobstructed line of sight (LOS) between two points) accounting for the vertical and horizontal errors in the estimated locations of both points as well as elevation errors in the database of the terrain that could obstruct the LOS between these points. The errors are first simply treated as a "white" noise sequence: we assume no correlation bet... View full abstract»

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  • Multiple-model estimation with variable structure- part VI: expected-mode augmentation

    Publication Year: 2005, Page(s):853 - 867
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (844 KB) | HTML iconHTML

    A new class of variable-structure (VS) algorithms for multiple-model (MM) estimation is presented, referred to as expected-mode augmentation (EMA). In the EMA approach, the original set of models is augmented by a variable set of models intended to match the expected value of the unknown true mode. These models are generated adaptively in real time as (globally or locally) probabilistically weight... View full abstract»

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  • Tracking with classification-aided multiframe data association

    Publication Year: 2005, Page(s):868 - 878
    Cited by:  Papers (39)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (842 KB) | HTML iconHTML

    In most conventional tracking systems, only the target kinematic information from, for example, a radar or sonar or an electro-optical sensor, is used in measurement-to-track association. Target class information, which is typically used in postprocessing, can also be used to improve data association to give better tracking accuracy. The use of target class information in data association can impr... View full abstract»

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  • Digital channelized receiver based on time-frequency analysis for signal interception

    Publication Year: 2005, Page(s):879 - 898
    Cited by:  Papers (32)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1592 KB) | HTML iconHTML

    A digital channelized receiver is presented for the interception of a wide variety of signals of complex structure, including those with low probability of interception. The receiver is designed from the perspective of the time-frequency analysis. It uses an extended time-frequency representation based on the noncoherent integration of the short-time Fourier transform (STFT) on which the detection... View full abstract»

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  • Multisensor multitarget bias estimation for general asynchronous sensors

    Publication Year: 2005, Page(s):899 - 921
    Cited by:  Papers (33)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2961 KB) | HTML iconHTML

    A novel solution is provided for the bias estimation problem in multiple asynchronous sensors using common targets of opportunity. The decoupling between the target state estimation and the sensor bias estimation is achieved without ignoring or approximating the crosscovariance between the state estimate and the bias estimate. The target data reported by the sensors are usually not time-coincident... View full abstract»

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  • Adaptive imaging for forward-looking ground penetrating radar

    Publication Year: 2005, Page(s):922 - 936
    Cited by:  Papers (11)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2572 KB) | HTML iconHTML

    Most of the current forward-looking ground-penetrating radar (FLGPR) systems use conventional delay-and-sum (DAS) based methods to form radar images for detection of the target (such as a landmine). However, DAS is a data-independent approach which is known to suffer from low resolution and poor interference and clutter rejection capability. We present a data-adaptive imaging approach for FLGPR im... View full abstract»

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  • Track-before-detect procedures for early detection of moving target from airborne radars

    Publication Year: 2005, Page(s):937 - 954
    Cited by:  Papers (48)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1042 KB) | HTML iconHTML

    In this paper we present a family of track-before-detect (TBD) procedures for early detection of moving targets from airborne radars. Upon a sectorization of the coverage area, the received echoes are jointly processed in the azimuth-range-Doppler domain and in the time domain through a Viterbi-like algorithm that exploits the physically admissible target transitions between successive illuminatio... View full abstract»

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  • W-band airborne interrupted frequency modulated CW imaging radar

    Publication Year: 2005, Page(s):955 - 972
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3321 KB) | HTML iconHTML

    A 94 GHz imaging radar-based on the interrupted FMCW (FMICW) principles, with its associated gimbals for stabilization and scanning has been developed as an airborne test-bed to evaluate radar-aided navigation and guidance algorithms. Preliminary results from helicopter-based flight tests show sufficient contrast between selected features (including runways) and their surroundings for both compute... View full abstract»

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  • Adaptive learning approach to landmine detection

    Publication Year: 2005, Page(s):973 - 985
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2659 KB) | HTML iconHTML

    We consider landmine detection using forward-looking ground penetrating radar (FLGPR). The two main challenging tasks include extracting intricate structures of target signals and adapting a classifier to the surrounding environment through learning. Through the time-frequency (TF) analysis, we find that the most discriminant information is TF localized. This observation motivates us to use the ov... View full abstract»

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  • IMM estimator versus optimal estimator for hybrid systems

    Publication Year: 2005, Page(s):986 - 991
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (409 KB) | HTML iconHTML

    The special feature of the interacting multiple model (TMM) estimator that distinguishes it from other suboptimal multiple model (MM) estimators is the "mixing/interaction" between its "mode-matched" base state filtering modules at the beginning of each cycle. This note shows that the same feature is exactly what it has in common with the optimal estimator for hybrid (MM) systems and this can be s... View full abstract»

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  • Time windowing for highly focused ISAR image reconstruction

    Publication Year: 2005, Page(s):992 - 1007
    Cited by:  Papers (29)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3008 KB) | HTML iconHTML

    In several applications long recorded live inverse synthetic aperture radar (ISAR) data are used to obtain one or more ISAR images. In order to reconstruct a well-focused ISAR image, a suitable selection of the echoes to be coherently processed must be provided. Such a selection can be made by defining a time window. We propose a technique for the automatic selection of the position and length of ... View full abstract»

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  • Novel hybrid 12-pulse boost-type rectifier with controlled output voltage

    Publication Year: 2005, Page(s):1008 - 1018
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2403 KB) | HTML iconHTML

    Novel hybrid 12-pulse line interphase transformer (LIT) rectifier systems with integrated single-switch or two-switch boost-type output stage that ensure a constant output voltage independent of mains and load conditions are proposed for supplying actuators of future more electric aircraft. The principle of operation, the dimensioning, and the system control are discussed. The theoretical consider... View full abstract»

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  • Power tracking for nonlinear PV sources with coupled inductor SEPIC converter

    Publication Year: 2005, Page(s):1019 - 1029
    Cited by:  Papers (32)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (451 KB) | HTML iconHTML

    The photovoltaic (PV) generator exhibits a nonlinear i-v characteristic and its maximum power (MP) point varies with solar insolation. In this paper, a V2-based MP point tracking (MPPT) scheme is developed using a buck-boost transformation topology. Although several buck-boost transformation topologies are available we have considered here a coupled inductor SEPIC converter for experimentation. To... View full abstract»

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  • EM-ML algorithm for track initialization using possibly noninformative data

    Publication Year: 2005, Page(s):1030 - 1048
    Cited by:  Papers (4)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1294 KB) | HTML iconHTML

    Initializing and maintaining a track for a low observable (LO) (low SNR, low target detection probability and high false alarm rate) target can be very challenging because of the low information content of measurements. In addition, in some scenarios, target-originated measurements might not be present in many consecutive scans because of mispointing, target maneuvers, or erroneous preprocessing. ... View full abstract»

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  • Universal equations for radar target detection

    Publication Year: 2005, Page(s):1049 - 1052
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (302 KB) | HTML iconHTML

    Two equations express detection probability and detectability factor for all Swerling targets and for partially correlated intermediate cases. View full abstract»

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  • Improved motion-mode estimation

    Publication Year: 2005, Page(s):1052 - 1056
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (222 KB) | HTML iconHTML

    Hybrid trackers incorporating a non-Markov modal model have been proposed. However, these algorithms use a restricted measurement set to identify the modal state. It is shown here that a renewal process model, along with broader measurement fusion, enhances modal classification in such estimators. View full abstract»

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Aims & Scope

IEEE Transactions on Aerospace and Electronic Systems focuses on the organization, design, development, integration, and operation of complex systems for space, air, ocean, or ground environment.  These systems include, but are not limited to, navigation, avionics, spacecraft, aerospace power, radar, sonar, telemetry, defense, transportation, automated testing, and command and control. 

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Lance Kaplan
Army Research Laboratory