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IEEE Transactions on Aerospace and Electronic Systems

Issue 4 • Oct. 1993

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Displaying Results 1 - 25 of 33
  • Sliding-mode controller design for spacecraft attitude tracking maneuvers

    Publication Year: 1993, Page(s):1328 - 1333
    Cited by:  Papers (100)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (455 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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  • Simple adaptive control of large flexible space structures

    Publication Year: 1993, Page(s):1137 - 1149
    Cited by:  Papers (28)
    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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  • An alternate algorithm for discrete-time filtering

    Publication Year: 1993, Page(s):1123 - 1136
    Cited by:  Papers (3)
    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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  • Image texture synthesis-by-analysis using moving-average models

    Publication Year: 1993, Page(s):1110 - 1122
    Cited by:  Papers (22)  |  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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  • 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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  • Effects of output filter on cross regulation in SRC

    Publication Year: 1993, Page(s):1095 - 1109
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (880 KB)

    Cross regulation performance of multioutput series resonant converter (SRC) topologies using capacitive or inductive filters is analyzed. The steady state cross regulation characteristics are derived using the state-plane techniques and are illustrated by the examples of two-output SRCs with capacitive and inductive filters. The characteristic curves show that over some range of output currents, t... 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 (2)
    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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  • 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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  • Large angle pitch attitude maneuver of a satellite using solar radiation pressure

    Publication Year: 1993, Page(s):1164 - 1169
    Cited by:  Papers (24)  |  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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  • Processing requirements for multisensor low-cost brilliant munitions

    Publication Year: 1993, Page(s):1084 - 1094
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (936 KB)

    A generic mission for an autonomous brilliant munition is presented and used to identify the functions that embedded signal processors must perform. Based on these functions and other operational factors such as weather, countermeasures, larger search areas, reduced false alarm rates, and increased munition maneuverability, the processing loads in bits/second messages/second, operations/second, an... 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 (15)
    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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  • Efficient L-D factorization algorithms for PDA, IMM, and IMMPDA filters

    Publication Year: 1993, Page(s):1297 - 1310
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (976 KB)

    Efficient algorithms exist for the square-root probabilistic data association filter (PDAF). The same approach is extended to develop square-root versions of the interacting multiple model (IMM) Kalman filter and the IMMPDAF algorithms. The computational efficiency of the method stems from the fact that the terms needed in the overall covariance updates of PDAF, IMM, and IMMPDAF can be obtained as... 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 (52)  |  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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  • Optimal multiple level decision fusion with distributed sensors

    Publication Year: 1993, Page(s):1252 - 1259
    Cited by:  Papers (21)
    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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  • 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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  • Spread-spectrum code and carrier synchronization errors caused by multipath and interference

    Publication Year: 1993, Page(s):1359 - 1365
    Cited by:  Papers (64)
    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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  • Joint probabilistic data association for autonomous navigation

    Publication Year: 1993, Page(s):1275 - 1286
    Cited by:  Papers (26)  |  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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  • Performance analysis for DOA estimation algorithms: unification, simplification, and observations

    Publication Year: 1993, Page(s):1170 - 1184
    Cited by:  Papers (155)  |  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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  • Solution and performance analysis of geolocation by TDOA

    Publication Year: 1993, Page(s):1311 - 1322
    Cited by:  Papers (107)  |  Patents (10)
    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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  • Optimum selection of error control coding using neural networks

    Publication Year: 1993, Page(s):1074 - 1083
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (824 KB)

    Significant performance improvements may be obtained in digital communication systems if error control coding is properly applied. However, selection of a coding scheme for specific applications is often a complicated task. The choice is affected by a set of system design goals. Some of these goals impose case-dependent conflicting requirements. Similar scheme selection problems exist in many engi... View full abstract»

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  • Removal of alignment errors in an integrated system of two 3-D sensors

    Publication Year: 1993, Page(s):1333 - 1343
    Cited by:  Papers (38)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (788 KB)

    An algorithm is presented to relatively align two 3-D sensors using targets that are tracked by both sensors. The algorithm estimates and removes sensor biases and sensor frame orientation errors. To illustrate this technique, the alignment algorithm is applied to simulated track data from two sensors View full abstract»

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  • Analysis of towed decoys

    Publication Year: 1993, Page(s):1222 - 1227
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (420 KB)

    Recent advances in RF missile systems have reduced the effectiveness of conventional on-board electronic countermeasures (ECM) to defend friendly aircraft. To provide the much needed defense, off-board ECM techniques are being developed. The effectiveness of off-board RF ECM is analyzed, and specific observations are made about the effectiveness of such ECM when used to defend friendly aircraft View full abstract»

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  • Military application of lasers

    Publication Year: 1993, Page(s):1369 - 1373
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (620 KB)

    The author relates his experiences in developing lasers for applications in avionics. These include carbon monoxide lasers, target designators, and gas dynamics lasers View full abstract»

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  • Capacitive-loaded push-pull parallel-resonant converter

    Publication Year: 1993, Page(s):1287 - 1296
    Cited by:  Papers (13)  |  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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  • Robust Kalman filter design for predictive wind shear detection

    Publication Year: 1993, Page(s):1185 - 1194
    Cited by:  Papers (5)
    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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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