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IEEE Transactions on Aerospace and Electronic Systems

Issue 3 • May 1974

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Displaying Results 1 - 25 of 26
  • Table of contents

    Publication Year: 1974, Page(s): c1
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  • IEEE Aerospace and Electronic Systems Society

    Publication Year: 1974, Page(s):c2 - 416a
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  • From the Editors

    Publication Year: 1974, Page(s): 305
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  • Military Satellite Communications Using Small Earth Terminals

    Publication Year: 1974, Page(s):306 - 318
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3329 KB)

    Satellite communications technology has reached the stage at which it is feasible to develop a reliable military tactical communications system using small transportable Earth terminals. This paper discusses the design considerations involved for a multiple-access system, with particular reference to the Earth terminals. View full abstract»

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  • Kalman Filter Applications in Airborne Radar Tracking

    Publication Year: 1974, Page(s):319 - 329
    Cited by:  Papers (31)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3100 KB)

    This paper studies the application of Kalman filtering to single-target track systems in airborne radar. An angle channel Kalman filter is configured which incorporates measures of range, range rate, and on-board dynamics. Theoretical performance results are given and a discussion of methods for reducing the complexity of the Kalman gain computation is presented. A suboptimal antenna controller wh... View full abstract»

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  • Output Signal-to-Noise Ratio for Amplitude and Intensity Modulated Laser

    Publication Year: 1974, Page(s):330 - 338
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1813 KB)

    General expressions are obtained for output SNR for both amplitude- and intensity-modulated lasers, where bandlimited Gaussian noise has been chosen as a modulating signal, and in the presence of background light. Two types of modulating signals are considered: the baseband and bandpass modulating signals. Detailed calculations are made for output SNR when an ideal narrowband optical filter is use... View full abstract»

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  • Optimal Inputs for Nonlinear Process Parameter Estimation

    Publication Year: 1974, Page(s):339 - 345
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1519 KB)

    The sensitivity of observed data to an unknown parameter is enhanced by utilizing optimal inputs. The derivation is given for the optimal input of an nth-order nonlinear differential equation. To obtain the optimal input, the solution of 4n two-point boundary value equations is required. Numerical resutis are given for a second order linear example. The optimal return is compared with the return o... View full abstract»

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  • An Automatic Timing Receiver System Based on the Loran-C Navigational Network

    Publication Year: 1974, Page(s):346 - 352
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2476 KB)

    This paper describes some new concepts in dealing with the circuitry for Loran-C automatic timing systems. The conventional analog techniques associated with phase-adjusting networks have been replaced by an incremental digital phase-shifting device. The Loran-C period generator includes facilities for delay compensation by means of an epoch monitor producing a 1-Hz output coincident with the mast... View full abstract»

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  • Correlation Techniques of Image Registration

    Publication Year: 1974, Page(s):353 - 358
    Cited by:  Papers (151)  |  Patents (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2119 KB)

    An extension to the basic concept of correlation detection as a means of image registration is developed. The technique involves linear spatial preprocessing of the inages to be registered prior to the application of a correlation measure. This preprocessing operation utilizes the spatial correlation within each image and greatly improves the detectability of image misregistration. An analysis of ... View full abstract»

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  • Rapid Aquisition Signal Design in a Multiple-Access Environment

    Publication Year: 1974, Page(s):359 - 363
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1556 KB)

    Acquisition in a communication receiver is the operation of determining the arrival time of a transmitted periodic timing marker. This is generally accomplished by sending a known acquisition waveform to aid in the arrival time measurement. Certain classes of waveforms are called rapid acquisition waveforms and are advantageous for reducing the time to acquire when sequential methods are used. A m... View full abstract»

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  • On the Mean Frequency Measurement System Using Correlation Detection

    Publication Year: 1974, Page(s):364 - 372
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2700 KB)

    This paper is concerned with the problem of measuring the mean frequency of the power spectrum of a zero-mean, stationary, narrowband Gaussian random signal in the presence of additive Gaussian noise. Signal-to-noise ratios at the output of the mean frequency measurement system using correlation detection are analyzed in terms of input signal-to-noise ratio, input signal and noise bandwidths, and ... View full abstract»

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  • On First Cycle Slip Time of Phase-Locked Loops in Cascade

    Publication Year: 1974, Page(s):373 - 379
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1544 KB)

    Precise measurement and spacecraft tracking are obtained by using phase-locked loops in cascade in two-way communications links. Statistics on cycle slip time are of vital importance in system planning and design. This paper presents: 1) results of a computer simulation study of the mean time to first cycle slip of cascade phase-locked loops preceded by bandpass limiters, and 2) the determination ... View full abstract»

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  • Calculating the Effect of Uneven Terrain on Glide Path Signals

    Publication Year: 1974, Page(s):380 - 384
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1319 KB)

    A method for calculating the bends in the glide slope due to uneven terrain is presented. A computer program written for the purpose enables the calculation of the difference in depth of modulation (DDM) at any point, taking into account the effect of uneven terrain. Results are presented for a hypothetical case of a hill in front of the runway. The program enables us to predict the glide slope be... View full abstract»

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  • The Effects of Notch Filters on the Correlation Properties of a PN Signal

    Publication Year: 1974, Page(s):385 - 390
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (915 KB)

    With wideband pseudo-noise (PN) communications systems, it is sometimes desirable to supplement the inherent interference rejection capabilities by adding notch filters to attenuate relatively narrowband interference. This correspondence presents an investigation of the effects of notch filters on the performance of PN correlation receivers. A theoretical analysis of the correlation drop due to fi... View full abstract»

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  • A Time Sidelobe Reduction Technique for Small Time-Bandwidth Chirp

    Publication Year: 1974, Page(s):390 - 392
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (515 KB)

    A filtering technique is described which permits time sidelobe suppression of small time-bandwidth product shirp. Signal-to-noise loss and time sidelobe level sensitivity to Doppler shift are presented for a filtered chirp waveform whose time-bandwidth product is 10. View full abstract»

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  • Correction to "Electromagnetic Effects of Aircraft Wake-Active Feuillet Interaction"

    Publication Year: 1974, Page(s): 392
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  • Comments on "Optimum Normalization of a Computed Quaternion of Rotation"

    Publication Year: 1974, Page(s):392 - 393
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    Additional observations and examples applied to the above correspondence are given. View full abstract»

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  • Exact Angular Accuracy of an Amplitude Comparison Sequential-Lobing Processor

    Publication Year: 1974, Page(s):393 - 398
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (754 KB)

    Assume E1 and E2 are the squares of two sequential envelopes from the sequential lobing of an antenna in a given plane. Independent thermal noise is generally present in the envelopes. The statistic e = (E2 ¿ E1)/(E2 + E1) has been used as an estimate of the angle to a target for the significant region of small angles compared to a beamwidth. For a nonfading target, the probability density and ch... View full abstract»

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  • Corrections to "Adaptive Trackers Based on Continuous Learning Theory"

    Publication Year: 1974, Page(s): 398
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  • Corrections to "Identification of Aircraft Stability and Control Parameters Using Hierarchical State Estimation"

    Publication Year: 1974, Page(s): 399
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  • Corrections to "The DFTSD: A Sequential Suboptimum Processor for Multiple-Range-Bin Radar Systems"

    Publication Year: 1974, Page(s):399 - 400
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  • 1974 Pioneer Award

    Publication Year: 1974, Page(s):401 - 402
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  • Information Dual Mode Transportation

    Publication Year: 1974, Page(s):403 - 412
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3814 KB)

    Dual Mode Transit has been suggested as a possible solution to some of the problems associated with transportation in the world today. This paper summarizes the program developed by the Urban Mass Transportation Administration in order to develop and test the Dual Mode concept from the viewpoint of GM, one of the contractors participating in the Concept Design phase of the program. The baseline sy... View full abstract»

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  • Table of contents

    Publication Year: 1974, Page(s): 413
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  • IEEE AES - An Invitation

    Publication Year: 1974, Page(s):414 - 415
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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