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Aerospace and Electronic Systems, IEEE Transactions on

Issue 2 • Date April 2006

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Displaying Results 1 - 25 of 38
  • IEEE Transactions on Aerospace and Electronic Systems - April 2006, Vol. 42 No. 2

    Publication Year: 2006 , Page(s): 01
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    Freely Available from IEEE
  • IEEE Aerospace and Electronic Systems Society

    Publication Year: 2006 , Page(s): 0_2
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    Freely Available from IEEE
  • From the Editor-in-Chief [Editorial staff changes]

    Publication Year: 2006 , Page(s): 385 - 387
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    Freely Available from IEEE
  • Uniform versus nonuniform sampling when tracking in clutter

    Publication Year: 2006 , Page(s): 388 - 400
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3170 KB) |  | HTML iconHTML  

    Many target tracking subsystems have the ability to schedule their own data rates; essentially they can "order" new information whenever they need it, and the cost is in terms of the sensor resource. But among the unmanaged schemes, uniform sampling, in which a new measurement is requested periodically and regularly, is the most commonly-used sampling scheme; deliberately nonuniform schemes are se... View full abstract»

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  • Hierarchical resource management in adaptive airborne surveillance radars

    Publication Year: 2006 , Page(s): 401 - 420
    Cited by:  Papers (12)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3050 KB) |  | HTML iconHTML  

    In this paper we present hierarchical resource management algorithms for adaptive airborne surveillance radars. By abstracting the physical layer sensor performance into a quality of service measure, the resource management problem is formulated as a constrained Markov decision process. A two-level (two-timescale) resource management algorithm is presented based on Lagrangian relaxation. A numeric... View full abstract»

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  • High-performance payload data handling system for Gaia

    Publication Year: 2006 , Page(s): 421 - 435
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1078 KB) |  | HTML iconHTML  

    Gaia is the most ambitious space astrometry mission currently envisaged and is a technological challenge in all its aspects. We describe a proposal for the payload data handling system of Gaia, as an example of a high-performance, real-time, concurrent, and pipelined data system. This proposal includes the front-end systems for the instrumentation, the data acquisition and management modules, the ... View full abstract»

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  • Performance improvement for constellation SAR using signal processing techniques

    Publication Year: 2006 , Page(s): 436 - 452
    Cited by:  Papers (28)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1884 KB) |  | HTML iconHTML  

    A new concept of spaceborne synthetic aperture radar (SAR) implementation has recently been proposed - the constellation of small spaceborne SAR systems. In this implementation, several formation-flying small satellites cooperate to perform multiple space missions. We investigate the possibility to produce high-resolution wide-area SAR images and fine ground moving-target indicator (GMTI) performa... View full abstract»

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  • Momentum transfer-based attitude control of spacecraft with backstepping

    Publication Year: 2006 , Page(s): 453 - 463
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (753 KB) |  | HTML iconHTML  

    A nonlinear control law design based upon the backstepping approach is addressed for attitude maneuver control of spacecraft by momentum transfer (MT) in the presence of disturbance. For MT, a traditional method usually applies constant torque as an input, which tends to produce significant residual oscillation. Enhanced methods such as optimal control can somewhat reduce the residual oscillation,... View full abstract»

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  • PSK communications systems using fully saturated power amplifiers

    Publication Year: 2006 , Page(s): 464 - 477
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3612 KB) |  | HTML iconHTML  

    Quasiconstant envelope phase-shift keying (PSK) is analyzed to assess its ability to overcome nonlinearities caused by fully saturated RF power amplifiers in communications systems. These modulations can achieve bit error rate (BER) performance comparable to linear BPSK in additive white Gaussian noise (AWGN) channel. Quasiconstant envelope offset quadrature PSK (OQPSK) is presented as a design ex... View full abstract»

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  • Extended PGA for range migration algorithms

    Publication Year: 2006 , Page(s): 478 - 488
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3062 KB) |  | HTML iconHTML  

    The phase gradient autofocus (PGA) algorithm is extended to work for synthetic aperture radar (SAR) spotlight images processed with range migration (w-k) algorithms. Several pre-processing steps are proposed for aligning the range-compressed phase-history data needed for successful autofocusing of the data. The proposed algorithm gave good results for both data with large point targets and data wi... View full abstract»

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  • Multicomponent receiver architectures for GPS interference suppression

    Publication Year: 2006 , Page(s): 489 - 502
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2496 KB) |  | HTML iconHTML  

    The global positioning system (GPS) is a one-way satellite-based navigation system employing spread-spectrum techniques that is widely used for commercial and military applications. Although the very low signal-to-noise ratio (SNR) is handled by the large spreading gain, GPS is susceptible to high-power interference signals and various types of jammers. We propose multicomponent receiver architect... View full abstract»

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  • Blind GPS receiver with a modified despreader for interference suppression

    Publication Year: 2006 , Page(s): 503 - 513
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2314 KB) |  | HTML iconHTML  

    The global positioning system (GPS) was designed to provide location estimates for various civilian and military applications using at least four satellites. Since GPS signals have a low signal-to-noise ratio (SNR), they also have a low signal-to-jammer ratio so that the accuracy of location estimates is influenced by cochannel interference and intentional jammers. We propose a low-complexity blin... View full abstract»

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  • High resolution channel sounder with narrowband low interference characteristics

    Publication Year: 2006 , Page(s): 514 - 526
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2225 KB) |  | HTML iconHTML  

    Channel impulse response (CIR) measurements typically require the transmission of high power wideband probing signals to characterise channels. These signals are potentially harmful to users of the spectrum under assessment This paper presents a method of high resolution channel sounding causing only low levels of wideband interference and details a measurement system developed to characterise the... View full abstract»

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  • New VF-power system architecture and evaluation for future aircraft

    Publication Year: 2006 , Page(s): 527 - 539
    Cited by:  Papers (13)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2237 KB) |  | HTML iconHTML  

    Conventional aircraft power system is a constant-frequency (CF) supply based on mechanical-regulated constant-speed mechanism that has relatively low efficiency. Replacing the CF system with variable-frequency (VF) power improves overall efficiency, and reduce the system's weight and volume. However, this creates a new tier of requirements and design challenges. Novel VF-power architecture is deve... View full abstract»

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  • Discrete-time min-max tracking

    Publication Year: 2006 , Page(s): 540 - 547
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (861 KB) |  | HTML iconHTML  

    The problem of optimal state estimation of linear discrete-time systems with measured outputs that are corrupted by additive white noise is addressed. Such estimation is often encountered in problems of target tracking where the target dynamics is driven by finite energy signals, whereas the measurement noise is approximated by white noise. The relevant cost function for such tracking problems is ... View full abstract»

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  • Code tracking architecture influence on GPS carrier multipath

    Publication Year: 2006 , Page(s): 548 - 561
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3906 KB) |  | HTML iconHTML  

    It is well known that carrier-phase multipath is one of the limiting error sources in high-precision differential GPS (Global Positioning System) applications. A thorough understanding of carrier-phase multipath is the first step in the course of mitigating its impact in high precision applications. Complete characterization of carrier-phase multipath error requires a fundamental theoretical descr... View full abstract»

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  • Design of safety monitor schemes for a fault tolerant flight control system

    Publication Year: 2006 , Page(s): 562 - 571
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1985 KB) |  | HTML iconHTML  

    For a research aircraft, "conventional" control laws (CLs) are implemented on a "baseline" flight computer (FC) while research CLs are typically housed on a dedicated research computer. Therefore, for an experimental aircraft used to test specific fault tolerant flight control systems, a safety logic scheme is needed to ensure a safe transition from conventional to research CLs (while at nominal c... View full abstract»

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  • Adaptive pulse compression via MMSE estimation

    Publication Year: 2006 , Page(s): 572 - 584
    Cited by:  Papers (56)  |  Patents (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2244 KB) |  | HTML iconHTML  

    Radar pulse compression involves the extraction of an estimate of the range profile illuminated by a radar in the presence of noise. A problem inherent to pulse compression is the masking of small targets by large nearby targets due to the range sidelobes that result from standard matched filtering. This paper presents a new approach based upon a minimum mean-square error (MMSE) formulation in whi... View full abstract»

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  • Acoustic node calibration using a moving source

    Publication Year: 2006 , Page(s): 585 - 600
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2695 KB) |  | HTML iconHTML  

    Acoustic nodes, each containing an array of microphones, can track targets in x-y space from their received acoustic signals, if the node positions and orientations are known exactly. However, it is not always possible to deploy the nodes precisely, so a calibration phase is needed to estimate the position and the orientation of each node before doing any tracking or localization. An acoustic node... View full abstract»

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  • Performance comparison of PRF schedules for medium PRF radar

    Publication Year: 2006 , Page(s): 601 - 611
    Cited by:  Papers (9)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1179 KB) |  | HTML iconHTML  

    Previous work has shown how evolutionary algorithms (EAs) are an effective tool in optimising the selection of pulse repetition frequency (PRF) values of medium PRF schedules in an airborne fire control radar (FCR) application requiring target data in three PRFs. The optimisation is driven by the requirement to minimise range/Doppler blindness whilst maintaining full decodability. In this paper we... View full abstract»

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  • Power anomaly effects and costs in low-voltage mobile power systems

    Publication Year: 2006 , Page(s): 612 - 624
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1554 KB) |  | HTML iconHTML  

    Electric power anomalies or disturbances can disrupt the normal operation of equipment, accelerate aging, or even cause outright failures thus resulting in increased costs of maintenance and reduced system reliability. Past research on the effects caused by power anomalies has been mostly focused on industrial, commercial, or residential systems, or on power distribution equipment. A literature su... View full abstract»

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  • Sigma-mean monitoring for the local area augmentation of GPS

    Publication Year: 2006 , Page(s): 625 - 635
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2699 KB) |  | HTML iconHTML  

    The local area augmentation system (LAAS) is a ground-based differential GPS system being developed to support aircraft precision approach and landing navigation with guaranteed integrity. To quantitatively appraise navigation integrity, an aircraft computes vertical and lateral protection levels using the standard deviation of pseudo-range correction errors, σpr_gnd, broadca... View full abstract»

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  • Receiver clock-based integrity monitoring for GPS precision approaches

    Publication Year: 2006 , Page(s): 636 - 643
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1487 KB) |  | HTML iconHTML  

    The errors in the vertical position and clock bias estimates obtained from GPS pseudo-range measurements are highly correlated. Therefore, the error in a vertical position estimate can be predicted if we know the clock bias estimation error. The latter can be estimated if the clock bias changes smoothly and, therefore, predictably. The current technology appears capable of manufacturing clocks whi... View full abstract»

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  • Performance of an adaptive feature-based processor for a wideband ground penetrating radar system

    Publication Year: 2006 , Page(s): 644 - 658
    Cited by:  Papers (20)  |  Patents (8)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2767 KB) |  | HTML iconHTML  

    A two-stage algorithm for landmine detection with a ground penetrating radar (GPR) system is described. First, 3-D data sets are processed using a computationally inexpensive pre-screening algorithm which flags potential locations of interest. These flagged locations are then passed to a feature-based processor which further discriminates target-like anomalies from naturally occurring clutter. Cur... View full abstract»

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  • Adaptive control based on a parametric affine model for tail-controlled missiles

    Publication Year: 2006 , Page(s): 659 - 669
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1176 KB) |  | HTML iconHTML  

    An adaptive control against uncertainties in tail-controlled STT (skid-to-turn) missiles is presented. First, we derive an analytic uncertainty model from a parametric affine missile model developed by the authors. Based on this analytic model, an adaptive feedback linearizing control law accompanied by a sliding mode control law is proposed. We provide analyses of stability and output tracking pe... 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