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IEEE Transactions on Aerospace and Electronic Systems

Issue 4 • Date Oct 1993

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Displaying Results 1 - 25 of 33
  • Experimental study in adaptive tracking control

    Publication Year: 1993, Page(s):1204 - 1215
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (832 KB)

    The authors describe an experimental study of adaptive pointing and tracking control for flexible spacecraft conducted on a complex ground experiment facility. The algorithm used is based on a multivariable direct model reference adaptive control law. Several experimental validation studies performed using this algorithm for vibration damping and robust regulation are extended by addressing the po... View full abstract»

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  • Solution and performance analysis of geolocation by TDOA

    Publication Year: 1993, Page(s):1311 - 1322
    Cited by:  Papers (75)  |  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (796 KB)

    One method of geolocation is based on measuring the time difference of arrivals (TDOAs) of a signal received by three or four geostationary satellites. The received signals are cross-correlated to determine the TDOAs and a set of nonlinear equations are solved to produce the location estimate. An exact solution for the transmitter position is derived for the three or four receiver cases. Extension... View full abstract»

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  • Image texture synthesis-by-analysis using moving-average models

    Publication Year: 1993, Page(s):1110 - 1122
    Cited by:  Papers (18)  |  Patents (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1312 KB)

    A synthesis-by-analysis model for texture replication or simulation is presented. This model can closely replicate a given textured image or produce another image that although distinct from the original, has the same general visual characteristics and the same first and second-order gray-level statistics as the original image. The texture synthesis algorithm, proposed contains three distinct comp... View full abstract»

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  • Sliding-mode controller design for spacecraft attitude tracking maneuvers

    Publication Year: 1993, Page(s):1328 - 1333
    Cited by:  Papers (45)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB)

    A robust sliding-mode control law that deals with spacecraft attitude tracking problems is presented. Two important natural properties related to the spacecraft model of motion are discussed. It is shown that by using these properties and the second method of Lyapunov theory, the system stability in the sliding mode can be easily achieved. The success of the sliding-mode controller and its robustn... View full abstract»

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  • An alternate algorithm for discrete-time filtering

    Publication Year: 1993, Page(s):1123 - 1136
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1100 KB)

    The discrete-time Kalman filter is an optimal estimator for the states of a linear, stochastic system. It assumes that measurements are linear combinations of the states, and all disturbances are Gaussian. The influence diagram, a decision analysis tool that provides an algorithm for discrete-time filtering equivalent to the Kalman filter when the influence diagram represents Gaussian random varia... View full abstract»

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  • Joint probabilistic data association for autonomous navigation

    Publication Year: 1993, Page(s):1275 - 1286
    Cited by:  Papers (17)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (812 KB)

    A new autonomous navigation scheme based on the joint probabilistic data association (JPDA) approach that processes landmark detections in the field of view (FOV) of an on-board sensor is developed. These detections-some true, some false-are associated to a set of stored landmarks and used to update the state of the vehicle. The results obtained from Monte Carlo simulations prove the ability of th... View full abstract»

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  • Multitarget detection using Kalman-based average displacement estimator

    Publication Year: 1993, Page(s):1195 - 1203
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1068 KB)

    The anomaly in the displacement estimates obtained from a low-level Kalman-based average displacement estimator is used to detect multiple targets in a forward-looking infrared (FLIR) scene. The displacement estimates originating from the targets could be associated with the detected multiple targets and an updated estimated position of the target could be obtained. This procedure could be repeate... View full abstract»

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  • Processor equivalence for daisy chain load sharing processors

    Publication Year: 1993, Page(s):1216 - 1221
    Cited by:  Papers (29)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    A linear daisy chain of processors in which processor load is divisible and shared among the processors is examined. It is shown that two or more processors can be collapsed into a single equivalent processor. This equivalence allows a characterization of the nature of the minimal time solution, a simple method to determine when to distribute load for linear daisy chain networks of processors with... View full abstract»

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  • Simple adaptive control of large flexible space structures

    Publication Year: 1993, Page(s):1137 - 1149
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (964 KB)

    Simple adaptive control procedures that do not require explicit parameter identification have been shown to be fit for control of large systems such as flexible structures. It is of interest, however, to test their robustness when fast adaptation is needed or when the resulting adaptive control system must confront finite sensor and actuator dynamics or parasitic disturbances. Flexible structures ... View full abstract»

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  • Optimal multiple level decision fusion with distributed sensors

    Publication Year: 1993, Page(s):1252 - 1259
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB)

    A data fusion model consisting of several levels of parallel decision fusions is considered. Global optimization of such a model is discussed to obtain the fusion rules for overall optimal performance. The reliability analysis of the proposed model is carried out to establish its superiority over the existing parallel and serial fusion models View full abstract»

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  • Capacitive-loaded push-pull parallel-resonant converter

    Publication Year: 1993, Page(s):1287 - 1296
    Cited by:  Papers (12)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    Results of a theoretical and experimental investigation of a capacitive-loaded push-pull parallel-resonant DC-DC converter (CL-PPRC) are presented and discussed. The push-pull parallel-resonant converter (PPRC) is driven by a lower-than-resonance frequency and the secondary voltage is rectified and smoothed by a capacitive filter. The CL-PPRC is shown to operate in the zero voltage switching (ZVS)... View full abstract»

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  • Improved DC/AC interface inverter for high-frequency space applications

    Publication Year: 1993, Page(s):1150 - 1163
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (868 KB)

    A DC/AC interface inverter for a high-frequency space power distribution system that uses dual asymmetrical resonant bridges is examined. Compared to the conventional approach in which two symmetrical bridges are used, the asymmetrical bridges arrangement offers better use of the installed kVA rating and efficiency of the inverter system. A simplified approach for modeling the inverter system in s... View full abstract»

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  • Further results on LMSS experiment in Kyoto City

    Publication Year: 1993, Page(s):1237 - 1243
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    In February of 1990, land mobile satellite experiments were conducted in Kyoto City, Japan, using the Engineering Test Satellite V (ETS-V). The received signal strength was recorded, as was the speed of the mobile as it traversed various downtown streets. The setting was that of a built-up urban area with medium and high rise buildings, electric utility poles, and trees lining the streets. These c... View full abstract»

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  • Robust Kalman filter design for predictive wind shear detection

    Publication Year: 1993, Page(s):1185 - 1194
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    Severe low-altitude wind shear is a threat to aviation safety. Newly developed airborne sensors measure the radial component of wind along a line directly in front of an aircraft. The authors use optimal estimation theory to define a detection algorithm to warn of hazardous wind shear from these sensors. To achieve robustness, a wind shear detection algorithm must distinguish threatening wind shea... View full abstract»

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  • Strategic route planning and sensor fusion

    Publication Year: 1993, Page(s):1357 - 1359
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (200 KB)

    A method of looking at sensor fusion that combines sensor outputs in a simple way to derive an upper bound of the detection probability is presented. The concept is useful in strategic route planning and for assessing tradeoffs between various possible sensor upgrades. It can be used to guide expenditures so that funds applied are applied in a well-balanced manner. A toy problem is analyzed to dem... View full abstract»

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  • Large angle pitch attitude maneuver of a satellite using solar radiation pressure

    Publication Year: 1993, Page(s):1164 - 1169
    Cited by:  Papers (8)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    The force exerted by the solar radiation, though very small in magnitude, produces significant effects, especially in the case of high altitude satellites. The solar radiation pressure represents one freely available environmental force that may be put to use for various purposes. This may lead to enhancement of the life of the satellite since it consumes a very nominal amount of on-board energy. ... View full abstract»

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  • On the probability that two vectors have no common components

    Publication Year: 1993, Page(s):1356 - 1357
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (140 KB)

    For two arbitrary vectors A, B of the same length and with components of one set, the probability that two vectors have no common components is calculated. In digital processing or coding theory, this probability is useful for comparing binary patterns. The formula can be easily implemented View full abstract»

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  • Multiposition alignment of strapdown inertial navigation system

    Publication Year: 1993, Page(s):1323 - 1328
    Cited by:  Papers (29)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    The authors demonstrate that the stationary alignment of strapdown inertial navigation system (SDINS) can be improved by employing the multiposition/technique. Using an observability analysis, it is shown that an optimal two-position alignment not only satisfies complete observability conditions but also minimizes alignment errors. This is done by analytic rank testing of the stripped observabilit... View full abstract»

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  • Carrier-wave interference to Loran-C: a statistical evaluation

    Publication Year: 1993, Page(s):1260 - 1274
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (980 KB)

    Loran-C is a pulsed, hyperbolic radio aid for long-range marine, air, and land navigation. The worldwide expansion of Loran-C, especially in Europe, has focused attention on carrier-wave interference to the system. The effects of a multiplicity of carrier-wave interferers (CWIs) on receiver timing measurement accuracy are considered. Both the phase tracking and the cycle-selection performance of r... View full abstract»

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  • Spread-spectrum code and carrier synchronization errors caused by multipath and interference

    Publication Year: 1993, Page(s):1359 - 1365
    Cited by:  Papers (49)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    The influence of multipath propagation and spread-spectrum interference on code and carrier synchronization is investigated. Both coherent and noncoherent delay lock loops (DLLs) are considered, with arbitrary early-late spacings up to one chip time. The coherent DLL is shown to have a major advantage; for a relatively high fading bandwidth, it has negligible tracking errors, while a noncoherent D... View full abstract»

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  • Multiresolutional filtering using wavelet transform

    Publication Year: 1993, Page(s):1244 - 1251
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    An algorithm for optimal and dynamic multiresolutional distributed filtering is derived. The wavelet transform is utilized as a bridge linking signals at different resolution levels. The algorithm can be employed for dynamic multisensor/data fusion View full abstract»

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  • Digital baseband processor for the GPS receiver (parts I and II)

    Publication Year: 1993, Page(s):1343 - 1349
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (580 KB)

    A global positioning system (GPS) receiver has been modeled mathematically and implemented in software. The digital baseband processor of the receiver performs the maximum likelihood estimations (MLEs) of the GPS observables. The following issues are discussed: the fundamentals of the digital GPS receiver, the modeling of the digital baseband processor, and the performance of the modeled static an... View full abstract»

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  • Geolocation of frequency-hopping transmitters via satellite

    Publication Year: 1993, Page(s):1228 - 1236
    Cited by:  Papers (1)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (712 KB)

    An analysis of satellite-communications terminal geolocation performed by means of interception of ground terminal uplink transmissions in which a number of spaceborne interceptors transpond the frequency band of interest to terrestrial location for processing is presented. Interception regions for prototypical terminals and satellites are calculated and the results are presented parametrically as... View full abstract»

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  • Performance analysis for DOA estimation algorithms: unification, simplification, and observations

    Publication Year: 1993, Page(s):1170 - 1184
    Cited by:  Papers (112)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (996 KB)

    Subspace based direction-of-arrival (DOA) estimation has motivated many performance studies, but limitations such as the assumption of an infinite amount of data and analysis of individual algorithms generally exist in these performance studies. The authors have previously proposed a unified performance analysis based on a finite amount of data and achieved a tractable expression for the mean-squa... View full abstract»

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  • A series representation of the spherical error probability integral

    Publication Year: 1993, Page(s):1349 - 1356
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    The author derives an infinite series representation of the spherical error probability integral (SEPI). The SEPI characterizes missile miss distance distributions resulting from Monte Carlo simulations. The SEPI is used when these distributions occupy a three-dimensional region of space. Truncation of this series provides a computationally efficient tool for approximating the SEPI. A series conve... 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