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IEEE Transactions on Aerospace and Electronic Systems

Issue 4 • Oct. 2002

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Displaying Results 1 - 25 of 36
  • Localization of step changes in multitemporal SAR images

    Publication Year: 2002, Page(s):1256 - 1275
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (925 KB) | HTML iconHTML

    Deals with multitemporal sequences of synthetic aperture radar (SAR) images with regions possibly affected by step reflectivity patterns of change. Specifically, it addresses the problems of detecting a temporal step pattern with small reflectivity change against a constant pattern and of estimating the transition instant for the step. The statistically optimized signal processing techniques propo... View full abstract»

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  • DOA estimation by exploiting the amplitude modulation induced by antenna scanning

    Publication Year: 2002, Page(s):1276 - 1286
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1947 KB) | HTML iconHTML

    We propose a beamsplitting-like approach to estimate the directions of arrival (DOA) of multiple radar targets present in the mainlobe of a rotating antenna. The proposed method is based on the maximum likelihood (ML) technique and it avoids the need for a difference channel by exploiting knowledge of the antenna main beam pattern. Two scenarios are considered: multiple targets with unknown determ... View full abstract»

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  • Layover solution in multibaseline SAR interferometry

    Publication Year: 2002, Page(s):1344 - 1356
    Cited by:  Papers (136)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB) | HTML iconHTML

    In this work, spectral estimation techniques are used to exploit baseline diversity of a multichannel interferometric synthetic aperture radar (SAR) system and overcome the layover problem. This problem arises when different height contributions collapse in the same range-azimuth resolution cell, due to the presence of strong terrain slopes or discontinuities in the sensed scene. We propose a mult... View full abstract»

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  • The DAVID mission in the heritage of the SIRIO and ITALSAT satellites

    Publication Year: 2002, Page(s):1371 - 1376
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1241 KB) | HTML iconHTML

    The DAta and Video Interactive Distribution (DAVID) mission belongs to the Small Missions for Science and Technology Programme of the Italian Space Agency (ASI) and is aimed at pioneering the use of the W-band channel for telecommunications experiments. Furthermore, it envisages the test of a novel technique, for an optimal sharing of the satellite resources, among a grid of Earth terminals, that ... View full abstract»

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  • The 22 GHz resource sharing experiment of the DAVID mission

    Publication Year: 2002, Page(s):1388 - 1397
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (961 KB) | HTML iconHTML

    The resource sharing experiment (RSE) of the DAVID (DAta and Video Interactive Distribution) multiexperiment mission of the Italian Space Agency (ASI) is described. The experiment envisages adaptively varying the robustness of signals down-transmitted, to a set (16) of Earth terminals by acting on their coding and spreading. During the DAVID satellite passes, each terminal determines autonomously ... View full abstract»

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  • M. Barry Carlton award for 2006

    Publication Year: 2002, Page(s):1450 - 1452
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    Freely Available from IEEE
  • M. Barry Carlton award for 2001

    Publication Year: 2002, Page(s):1453 - 1454
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    Freely Available from IEEE
  • Author index

    Publication Year: 2002, Page(s):1455 - 1458
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    Freely Available from IEEE
  • Subject index

    Publication Year: 2002, Page(s):1458 - 1472
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    Freely Available from IEEE
  • Identification of ground targets from sequential high-range-resolution radar signatures

    Publication Year: 2002, Page(s):1230 - 1242
    Cited by:  Papers (66)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (873 KB) | HTML iconHTML

    An approach to identifying targets from sequential high-range-resolution (HRR) radar signatures is presented. In particular, a hidden Markov model (HMM) is employed to characterize the sequential information contained in multiaspect HRR target signatures. Features from each of the HRR waveforms are extracted via the RELAX algorithm. The statistical models used for the HMM states are formulated for... View full abstract»

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  • The DAVID mission of the Italian Space Agency (ASI - Agenzia Spaziale Italiana)

    Publication Year: 2002
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (173 KB)

    Italian satellite mission development history is dominated by the need to explore increasing frequency ranges and characterizing, through experimental results, communications channels, in order to render them useful for the design of operational systems using these frequency ranges. the DAVID (DAta and Video Interactive Distribution) Programme is a multi-experiment mission of the Italian Space Age... View full abstract»

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  • Application of distributed signal detection to multiuser communication systems

    Publication Year: 2002, Page(s):1220 - 1229
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (629 KB) | HTML iconHTML

    Distributed signal detection is extended to multiuser scenarios. Optimum decision rules for cooperating receivers are found for the jointly optimum criterion and the individually optimum criterion. Numerical results show that distributed systems achieve nearly centralized performance using only one or two-bit descriptions of the preliminary decisions. Moreover, distributed signal detection can be ... View full abstract»

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  • Decoupling and tracking control of induction motor drive

    Publication Year: 2002, Page(s):1357 - 1369
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (777 KB) | HTML iconHTML

    This work introduces an adaptive observation system and a robust control system for achieving the favorable decoupling control and high-precision speed tracking property of an induction motor (IM) drive system. First, an adaptive observation system with an inverse rotor time-constant observer is derived on the basis of model reference adaptive system (MRAS) theory to preserve the decoupling contro... View full abstract»

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  • Power factor correction circuits with robust current control technique

    Publication Year: 2002, Page(s):1210 - 1219
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB) | HTML iconHTML

    A dynamically robust current control method to synthesize a sinusoidal input current for AC-to-DC converters with boost type topology is presented. Under this control strategy, the inductor current and the diode current of the boost converter are fed back and combined in a special way which makes the input current of the AC-to-DC converter stable and robust. The input current is solely determined ... View full abstract»

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  • Bearings-only target motion analysis with acoustic propagation models of uncertain fidelity

    Publication Year: 2002, Page(s):1122 - 1137
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (978 KB) | HTML iconHTML

    The augmented bearings-only target motion analysis (TMA) problem arises when the bearing measurements of the classical bearings-only TMA problem are augmented with received signal-to-noise ratio (SNR) measurements. A combined acoustic propagation and sensor (CAPS) performance prediction model specifying the conditional density of the SNR measurements is assumed given; however, mismatch may exist b... View full abstract»

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  • Charge measurement circuit for electric vehicle batteries

    Publication Year: 2002, Page(s):1201 - 1209
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (569 KB) | HTML iconHTML

    Calculating the state of charge (SOC) of an electric vehicle (EV) battery is an inherently error prone process that depends on several variables. However, the accuracy of the required charge flow measurements can be greatly improved by using a voltage to frequency (V/F) converter in conjunction with a digital counter to integrate the measured battery current. View full abstract»

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  • Buck modulator with improved large-power bandwidth

    Publication Year: 2002, Page(s):1335 - 1343
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (617 KB) | HTML iconHTML

    A dynamic pulsewidth modulator (DPM) is synthesized to generate a PWM (pulsewidth modulated) signal from dynamic converter variables and from a (quasi-)static control signal. Based on a pragmatic principle with simple hardware implementation, the DPM can be functionally integrated with a PWM converter to broaden the converter power bandwidth, enhancing the converter's ability to meet stringent dyn... View full abstract»

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  • Unmanned aircraft navigation for shipboard landing using infrared vision

    Publication Year: 2002, Page(s):1181 - 1200
    Cited by:  Papers (37)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1646 KB) | HTML iconHTML

    This paper addresses the problem of determining the relative position and orientation of an unmanned air vehicle with respect to a ship using three visible points of known separation. The, images of the points are obtained from an onboard infrared camera. The paper develops a numerical solution to this problem. Both simulation and flight test results are presented. View full abstract»

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  • Series of radiation-hardened, high efficiency converters for high voltage bus

    Publication Year: 2002, Page(s):1324 - 1334
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (758 KB) | HTML iconHTML

    A review of common switching techniques for dc/dc power conversion is presented. The evolution of the forward converter is discussed, leading naturally to the introduction of the double forward converter. Technical details for a series of radiation-hardened converters are then provided. This series was designed for space power management and distribution (PMAD) applications. The successful develop... View full abstract»

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  • Adaptive resolution of mainlobe and sidelobe detections using model order determination

    Publication Year: 2002, Page(s):1399 - 1407
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (519 KB) | HTML iconHTML

    This work presents the development and performance evaluation of a methodology for distinguishing between mainlobe and sidelobe detections that arise in adaptive radar systems operating in adverse environments. Various adaptive detection test statistics such as the adaptive matched filter (AMF), the generalized likelihood ratio test (GLRT), and adaptive coherence estimate (ACE), and combinations o... View full abstract»

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  • Thruster design for position/attitude control of spacecraft

    Publication Year: 2002, Page(s):1172 - 1180
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB) | HTML iconHTML

    The objective of this work is to design the configuration of thrusters and valves of a propulsion system which should reject external and internal perturbations to control position and attitude of a spacecraft. As has been proved in a previous paper by Pena et al. (see ibid., vol. 36, no. 3, 2000), there exist configurations of 6 thrusters which can achieve this task, even under the failure of any... View full abstract»

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  • On the singularities in higher order resonant converters

    Publication Year: 2002, Page(s):1412 - 1415
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB) | HTML iconHTML

    In this correspondence, the singularities in higher order (n ≥ 3) LC resonant converters are examined based on circuit theory. It is shown that the system A-matrix for odd order LC resonant converters (neglecting all the parasitic resistances) is always singular. As a consequence, all the third order LC resonant converters in dc-dc power supply applications can be described and solved via a sec... View full abstract»

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  • Vector subspace detection in compound-Gaussian clutter. Part II: performance analysis

    Publication Year: 2002, Page(s):1312 - 1323
    Cited by:  Papers (40)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (779 KB) | HTML iconHTML

    For pt. I see ibid., vol. 38, no. 4, p. 1295 (2002). In this second part we deal with the problem of detecting subspace random signals against correlated non-Gaussian clutter modeled by the compound-Gaussian distribution. In the first part of the paper, we derived the optimum Neyman-Pearson (NP) detector, the generalized likelihood ratio test (GLRT), and a constant false-alarm rate (CFAR) detector... View full abstract»

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  • Automatic track filter tuning by randomized algorithms

    Publication Year: 2002, Page(s):1444 - 1449
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (418 KB) | HTML iconHTML

    Tuning or fine tuning of a tracker system turns out to be a hard job in practice. The main reason for this is that in a practical (surveillance) tracker system there are a lot of design parameters and a lot of competing requirements to be met. An algorithm to tune a tracker system automatically and at the same time obtain quantitative results in terms of the optimality of the solution is provided ... View full abstract»

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  • The W-band data collection experiment of the DAVID mission

    Publication Year: 2002, Page(s):1377 - 1387
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (706 KB) | HTML iconHTML

    The data collection experiment (DCE) of the scientific mission DAVID (DAta and Video Interactive Distribution) of the Italian Space Agency (ASI) will pioneer the use of the W-band for telecommunications experiments. In particular the collection of high volumes of data from remote or virtually remote sites will be achieved through the exploitation of a W-band link in a time window of a few minutes ... 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. 

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Meet Our Editors

Editor-in-Chief
Lance Kaplan
Army Research Laboratory