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IEEE Transactions on Aerospace and Electronic Systems

Issue 1 • Date Jan. 1975

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Displaying Results 1 - 25 of 26
  • Table of contents

    Publication Year: 1975, Page(s): c1
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  • IEEE Aerospace and Electronic Systems Society

    Publication Year: 1975, Page(s):c2 - 128a
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  • From the Editors

    Publication Year: 1975, Page(s): 1
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  • A Novel Procedure for Assessing the Accuracy of Hyperbolic Multilateration Systems

    Publication Year: 1975, Page(s):2 - 15
    Cited by:  Papers (57)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1833 KB)

    This paper describes a novel procedure for determing the accuracy of hyperbolic multilateration systems. Basically, the procedure links the conventional accuracy measures (e. g., GDOP) to the moments and products of inertia of a mass configuration that is easily derived from the system geometry. Thus, the problem of determining accuracy measures is reduced to that of calculating simple moments and... View full abstract»

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  • Accuracy Limitations of Hyperbolic Multilateration Systems

    Publication Year: 1975, Page(s):16 - 29
    Cited by:  Papers (28)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1828 KB)

    A recently developed procedure [1] for assessing the accuracy of hyperbolic multilateration systems makes it easy to determine basic limitations on accuracy. This paper illustrates how such bounds can be derived. The results include bounds for a variety of geometries that are representative of practical ground-based and satellite-based hyperbolic systems. The results are applicable whenever the ra... View full abstract»

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  • Iterative Optimal Orthogonalization of the Strapdown Matrix

    Publication Year: 1975, Page(s):30 - 37
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1513 KB)

    This paper treats the problem of finding an orthogonal matrix which is the closest, in the Forbenius norm, to a given nonorthogonal matrix. This nonorthogonal matrix is the result of a fast but rather inaccurate computation of the well-known direction cosine matrix (DCM) of a strapdown inertial navigation system. The known closed-form solution to this problem is rederived using the directional der... View full abstract»

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  • Graphical Derivations of Radar, Sonar, and Communication Signals

    Publication Year: 1975, Page(s):38 - 44
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1573 KB)

    The designer of a communication system often has knowledge concerning the changes in distance between transmitter and receiver as a function of time. This information can be exploited to reduce multipath interference via proper signal design. A radar or sonar may also have good a priori information about possible target trajectories. Such knowledge can again be used to reduce the receiver's respon... View full abstract»

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  • Optimum Position Estimation Using Multiple-Frequency Omega

    Publication Year: 1975, Page(s):45 - 55
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2309 KB)

    The maximum-likelihood estimator of the line of position (LOP) resulting from K frequencies received from each of two Omega stations for high SNR is derived. The estimator takes advantage of interfrequency correlation of phase uncertainties by modeling them as resulting from phase velocity uncertainties which are jointly Gaussian with known covariance. The utilization of Omega for search and rescu... View full abstract»

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  • An Algorithm for Designing Burst Waveforms with Quantized Transmitter Weights

    Publication Year: 1975, Page(s):56 - 64
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1778 KB)

    An algorithm is described which finds optimum transmitter and receiver weights to maximize clutter suppression in a predetermined clutter region when using burst waveforms. It is assumed that the transmitter weights can only take on values from a finite set. This optimization problem is solved using a branch and bound algorithm. An example is given which shows the improvement in clutter suppressio... View full abstract»

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  • Electro-Optical Processing of Phsased-Array Antenna Data

    Publication Year: 1975, Page(s):65 - 76
    Cited by:  Papers (16)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4968 KB)

    An on-line two-dimensional optical processor has been used to process simulated linear and planar phased-array radar data off-line but at real-time data rates. The input transducer is an electron-beam-addressed KD2 PO4 light valve. View full abstract»

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  • Envelope Threshold Detection in a Class of Non-Gaussian Interference

    Publication Year: 1975, Page(s):77 - 85
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2058 KB)

    This paper considers the detection of a sinusoidal or chirp signal imbedded in wideband FM interference (as might be generated by some types of active jamming), such that after pulse compression or other integration, the interference can be approximated by a sum of sinusoids of independent phase. The detection probability in such non-Gaussian noise is compared to that for Gaussian noise, with the ... View full abstract»

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  • Theory of Scalloping Amplitude Errors in Standard VOR Bearing Indications

    Publication Year: 1975, Page(s):86 - 93
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1835 KB)

    A rigorous theory is developed for the course scalloping amplitudes observed in the bearing indications of an airborne standard VOR receiver in the presence of multipath signals. The VOR transmitting antenna pattern characteristics, the scattering properties of the multipath source, and the effects of ground reflection are all built into the theory so that their combined effects on the scalloping ... View full abstract»

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  • Monopulse Estimation of the Centroid of an Ensemble of Radar Scatterers

    Publication Year: 1975, Page(s):94 - 102
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1764 KB)

    The use of data obtained by a monopulse radar to estimate the location of the radar cross-section centroid of an ensemble of scatterers is discussed. Both dish and phased-array antenna radars are treated. Expressions for the bias and variance of the centroid estimates are presented, including the effects of the radar receiver and beam pattern characteristics, receiver noise, and the video waveform... View full abstract»

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  • A Modification to Improve the Inverse Filter of Senmoto and Childers

    Publication Year: 1975, Page(s):103 - 105
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (423 KB)

    An inverse filter, contained in a recently published paper by Senmoto and Childers, is improved by the application of a shaping function derived by Turin in an earlier paper. View full abstract»

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  • An MTI Technique for Processing Radar Measurements of a Waking Reentry Body

    Publication Year: 1975, Page(s):105 - 109
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (758 KB)

    A processing technique based on pulse-cancellation techniques familiar in moving target indicator (MTI) radar is proposed for separating (in Doppler) echoes of a reentry body traveling at hypersonic velocities from those of its lower velocity turbulent wake appearing in the same range cell. The cancellation technique is implemented by forming the sum of the products of binomial weighting coefficie... View full abstract»

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  • Moments of Estimated Input Power for Finite Sample Averages of Radar Receiver Outputs

    Publication Year: 1975, Page(s):109 - 113
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1031 KB)

    Closed-form solutions for all the estimated power moments as a function of the number of independent samples were found for the linear and logarithmic receiver. Incoming signal envelope distribution is assumed to be Rayleigh. The estimates' expected value and standard deviations are plotted and compared with those of a square-law receiver. It is shown that the bias in the expected value for both r... View full abstract»

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  • Reduction of Positional Estimate Errors in HF Hyperbolic Position-Fixing Systems

    Publication Year: 1975, Page(s):113 - 114
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (415 KB)

    A simple ionospheric prediction model is employed to determine the reduction in the positional estimate errors in HF hyperbolic position-fixing systems provided by the use of the model. Quantitative results of positional estimate errors before and after the application of the model to experimental time-delay data are compared. View full abstract»

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  • Comments on "Atomic Power Engineering Under Falsified Safety Standards"

    Publication Year: 1975, Page(s):114 - 115
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  • Restricted Data Comment

    Publication Year: 1975, Page(s): 115
    Cited by:  Papers (2)
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  • Quasi-Complementary Sequences

    Publication Year: 1975, Page(s):115 - 118
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (700 KB)

    A method of constructing digital phase reversal codes which have few nonzero sidelobes and which are available in frequent lengths is given. This is particularly important in the area of longer codes. The codes are a form of combined sequence and, hence, have the desirable property of bandwidth reduction for the outer code. However, only two member codes are required. A major usage of these codes ... View full abstract»

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  • Estimating Range Derivatives Using Phase Differences

    Publication Year: 1975, Page(s):118 - 123
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (652 KB)

    The problem of estimating radar range derivatives using phase differences is considered. A minimum-variance, unbiased estimator is obtained. The resultant variances of the estimates so obtained are shown to be significantly lower than those of a least-squares estimator. Finally, a recursive form for the estimator is derived. View full abstract»

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  • Correction to "Acquisition Time of Tracking Loops Operating in the Frequency-Search Mode"

    Publication Year: 1975, Page(s):123 - 124
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  • Corrections to "Product Correlator Performance for Gaussian Random Scenes"

    Publication Year: 1975, Page(s):124 - 125
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  • Corrections to "Aircraft Interrogation Scheduling with ASTRO-DABS"

    Publication Year: 1975, Page(s): 125
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  • IEEE AES-an Invitation

    Publication Year: 1975, Page(s):126 - 127
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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