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IEEE Transactions on Aerospace and Electronic Systems

Issue 4 • Date July 1967

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Displaying Results 1 - 25 of 27
  • [Front cover]

    Publication Year: 1967, Page(s): c1
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    Freely Available from IEEE
  • IEEE Aerospace and Electronic Systems Group

    Publication Year: 1967, Page(s): nil1
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    Freely Available from IEEE
  • [Breaker page]

    Publication Year: 1967, Page(s): nil1
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    Freely Available from IEEE
  • From the Editors

    Publication Year: 1967, Page(s): 585
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    Freely Available from IEEE
  • Electrical Characteristics of Silicon Solar Cells at Low Temperatures

    Publication Year: 1967, Page(s):586 - 590
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1800 KB)

    Experimentally determined values of open-circuit voltage, short-circuit current, and maximum power for p on n and n on p silicon solar cells are presented for temperatures ranging from -196°C to + 50°C under equivalent space sunlight intensities of 58 mW/cm2 and 268 mW/cm2. An anomalous behavior is observed in the n on p cells at low temperatures; namely, the open-circuit voltage becomes nearly ... View full abstract»

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  • On the Acquisition Time for an Apollo Ranging Code

    Publication Year: 1967, Page(s):591 - 595
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1154 KB)

    An Apollo ranging system is considered whose phase reference is obtained by a phase-locked loop for bit synchronization. The bit phase reference is noisy, and the error probability for the ranging code is shown to depend on the input signal energy per bit to noise density ratio. The procedure of computing the acquisition time for the ranging code is then presented and the acquisition time for a lu... View full abstract»

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  • Semiconductor Surface Thermocouples for Determining Heat-Transfer Rates

    Publication Year: 1967, Page(s):596 - 603
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2914 KB)

    Possible methods of increasing the sensitivity capabilities for determining heat-transfer rates associated with wind tunnel testing have been investigated. Techniques utilizing surface thermocouples of conventional thermocouple materials do not provide the necessary temperature sensitivity to low heat-transfer rates. This need for increased sensitivity has resulted in development and evaluation of... View full abstract»

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  • Random Characteristics of the Type II Phase-Locked Loop

    Publication Year: 1967, Page(s):604 - 612
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2633 KB)

    The results of a study of the characteristics of the second-order Type II phase-locked loop with a Gaussian noise input, and obtained by digital computer simulation, are presented. The digital simulation is described and the random state variables are defined such that their characteristics can be interpreted in terms of existing phase portraits of autonomous phase-locked loops. The statistics ass... View full abstract»

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  • Continuous Measurement of Shock and Contact Discontinuities Velocity

    Publication Year: 1967, Page(s):613 - 622
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    An experimental method applying microwave techniques to obtain continuous measurement of both the shock and contact discontinuities bounding an air plasma generated in a cylindrical hypersonic shock tube is developed. X-band microwave signals excited in the TE11 mode reflect from the moving shock and contact surfaces. The resulting FM interference pattern is demodulated, yielding continuous veloci... View full abstract»

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  • Autonomous Upgrading of Inertial Navigation Systems

    Publication Year: 1967, Page(s):623 - 636
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2559 KB)

    The performance of substandard inertial platform gyros can be improved through the sampled supervision of their operation by a higher grade gyroscope mounted directly on the platform. The relative drift rates of the susbstandard platform gyros are estimated on a cyclical basis. This paper describes techniques for estimating the drift rates. It deals with the method of applying these estimated valu... View full abstract»

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  • Fourier Analysis of Commutated-Capacitor-Type Integrator Output Signal

    Publication Year: 1967, Page(s):637 - 642
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1104 KB)

    It is shown that an operational amplifier with four commutated capacitors in the feedback path produces an output signal whose fundamental is equal in magnitude but 180 degrees out of phase with the input. The analysis is carried out by expressing the output signal in a Fourier series. View full abstract»

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  • Accuracy of Star Occultation Measurements for Satellite Navigation

    Publication Year: 1967, Page(s):643 - 655
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3052 KB)

    To determine the orbital parameters of a satellite using star occultations, it is necessary to measure the intensity of stars as they occult. The accuracy of the intensity measurements is reduced by interfering sources of light and internal noise, and is expressed in terms of the magnitude of various sources of interference. Subsequently, a specific system is analyzed in detail. Moonlit cloud tops... View full abstract»

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  • Synthesis of Ambiguity Functions for Prescribed Responses

    Publication Year: 1967, Page(s):656 - 663
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1996 KB)

    The synthesis of radar ambiguity functions is approached using burst-pulse time-frequency waveform coding. Noting that the parameters that define the central response of the ambiguity function for these code classes also define the waveform code, a statistical decision procedure based upon the central response is employed to obtain Bayes-type codes. The selection of the code parameters is subject ... View full abstract»

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  • Satellite Tracking Simultaneous-Lobing Monopulse Receiving System with Polarization Diversity Capability

    Publication Year: 1967, Page(s):664 - 680
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5284 KB)

    A 136-MHz to 10-GHz simultaneous-lobing monopulse receiving system, utilizing polarization diversity in both coherent (phase-lock) and noncoherent (nonphase-lock) operational modes, has been developed for the National Aeronautics and Space Administration (NASA) Space Tracking and Data Acquisition Network (STADAN). This sum-and-difference monopulse system, called APDAR (Advanced Polarization Divers... View full abstract»

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  • Linear Minimum Variance Estimation with Complex Phase Errors

    Publication Year: 1967, Page(s):681 - 687
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1487 KB)

    The linear minimum variance estimator of a random signal, received multiplied by a complex Gaussian phase error and added to random noise, is investigated. The results apply to the propagation of images through the turbulent atmosphere, fading channels, and synthetic-aperture radar. Among others, a result is that the multiplicative error can be replaced by an additive error, usually white. The bes... View full abstract»

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  • The Use of Environmental Stress in Conjunction with Simulation Testing

    Publication Year: 1967, Page(s):688 - 696
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3228 KB)

    Large-scale vehicle simulations in which human subjects are exposed to realistic environmental profiles are well within the engineering state-of-the-art. The Boeing Multiple-Stress Laboratory is capable of exposing subjects to heat, noise, vibration, and altitude, while measuring their performance and physiology. Data have been obtained on simulations relative to fixed-wing aircraft, helicopters, ... View full abstract»

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  • DF Vectoring: Application to Stationary Synchronous Satellites

    Publication Year: 1967, Page(s):697 - 704
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2791 KB)

    Several methods of using an earth-based radio reference signal to determine the three-axis attitude of a synchronous satellite, and two types of spacecraft electronic systems (amplitude measurement and phase measurement), which obtain attitude and pointing information from the radio reference signal for orientating the spacecraft and for directing large-aperture antennas aboard the spacecraft are ... View full abstract»

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  • Delay-Doppler Ambiguity Function for Wideband Signals

    Publication Year: 1967, Page(s):705 - 711
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1086 KB)

    The conventional ambiguity function is extended to include the Doppler distortions of the modulation function. The distinctive features of the extension are the use of the complex notation for wideband signals, and inclusion of the Doppler effect on the signal amplitude. The result is an ambiguity function from which Woodward's form can be found by inspection. It is shown that the well-known volum... View full abstract»

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  • Logarithmic Compression of Digitally Telemetered Data

    Publication Year: 1967, Page(s):712 - 719
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1870 KB)

    To express a number using true logarithmic compression, at least B = log2 [log R log(1 + Q/100 1 - Q/100/)] bits are required. (R = dynamic range, Q = ¿¿error percent.) True logarithmic compression is rarely used in practice, but quasi-logarithmic methods such as normalized floating-point format are used frequently. A partially unnormalized floating-point format provides the best performance in th... View full abstract»

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  • A Comparison of Second, Third, and Fourth Order Phase-Locked Loops

    Publication Year: 1967, Page(s):720 - 727
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1820 KB)

    This paper presents data describing various performance characteristics of phase-locked loops, which were obtained for the purpose of determining an optimum selection of system order in view of typical operating conditions. With the functions optimized with respect to particular performance characteristics, calculations of the integrated square error and peak error with polynomial inputs are prese... View full abstract»

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  • The Hilbert Transform as an Iterated Laplace Transform

    Publication Year: 1967, Page(s):728 - 729
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (325 KB)

    First Page of the Article
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  • Approximate Results for Dual-Antenna AMTI Radar

    Publication Year: 1967, Page(s):729 - 731
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (489 KB)

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  • Optimum Waveform for the Shortest Acquisition Time in Type-II Phase-Lock Loops

    Publication Year: 1967, Page(s): 731
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (174 KB)

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  • Screening (Shielding) Effect of a Chaff Cloud

    Publication Year: 1967, Page(s):731 - 734
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (763 KB)

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  • Conditions that a Sample Function from a Stationary Random Process be Laplace Transformable

    Publication Year: 1967, Page(s):734 - 735
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

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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. 

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Meet Our Editors

Editor-in-Chief
Lance Kaplan
Army Research Laboratory