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Aerospace and Electronic Systems, IEEE Transactions on

Issue 1 • Date Jan. 1972

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Displaying Results 1 - 21 of 21
  • Table of contents

    Publication Year: 1972 , Page(s): c1
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  • IEEE Aerospace and Electronic Systems Society

    Publication Year: 1972 , Page(s): c2 - 128a
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  • From the Editors

    Publication Year: 1972 , Page(s): 1
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  • Synthesis of Efficient Huffman Sequences

    Publication Year: 1972 , Page(s): 2 - 8
    Cited by:  Papers (15)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2044 KB)  

    A method is presented for choosing the zero pattern of the z transform of a Huffman (impulse-equivalent) sequence so that the energy of the sequence is large for a given peak amplitude. The scheme applies to real and complex Huffman sequences. Illustrative examples are given and the ambiguity functions of the synthesized signals are shown. View full abstract»

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  • A Pulsewidth-Modulated Dc-to-Dc Converter That Utilizes a Small Number of Components

    Publication Year: 1972 , Page(s): 9 - 12
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (879 KB)  

    In general, circuit reliability can be enhanced by either incorporating redundancy or by minimizing a circuits component count. Conventional nonregulating converters generally require two active devices, whereas in regulating converters or switching regulators as many as 10 transistors, either integrated or discrete, is not uncommon. A regulating dc-to-dc converter which provides useful regulation... View full abstract»

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  • Photocounting Receiver Performance for Detection of Multimode Laser or Scattered Radiation

    Publication Year: 1972 , Page(s): 13 - 18
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1456 KB)  

    Photocounting distributions, the decision threshold, and the probability of error are obtained for a binary optical communication system in which both the signal and background radiation are Gaussian processes. This would be the case, for example, when the radiation source is a nonlocked multimode laser or when the received radiation is scattered from a satellite. Dark current is considered. The r... View full abstract»

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  • Stochastic Optimization of Some of the Design Parameters of Airborne Laser-Seeker Systems

    Publication Year: 1972 , Page(s): 19 - 26
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1792 KB)  

    The search process of an airborne laser-seeker system is studied to maximize the probability of target acquisition with respect to the following parameters: altitude, velocity, seeker scan angle, seeker depression angle, laser illuminator peak power, scan pattern, and acceptance logic. The relationships between the objective variable and the first five parameters are established through a regressi... View full abstract»

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  • Constant-False-Alarm-Rate Signal Processors for Several Types of Interference

    Publication Year: 1972 , Page(s): 27 - 34
    Cited by:  Papers (24)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1651 KB)  

    Distribution-free methods and maximum-likelihood estimation technique have been previously suggested for constant-false-alarm-rate (CFAR) processors. The first technique assumes no a priori environmental knowledge and the second assumes almost complete environmental knowledge. Several intermediate environmental assumptions are considered. The performance of single-pulse transmission signal process... View full abstract»

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  • Characterizing Angle Tracking Radars Using Complex Variables

    Publication Year: 1972 , Page(s): 35 - 42
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1441 KB)  

    The receiver signal of a general angle tracking radar where there is asingle target which consists of a set of n reflectors is analyzed. It is shown how the analysis of this radar can be greatly simplified by representing the signals in the receiver as complex variables. This representation also makes it very easy to analyze such problems as scintillation and single-sideband crosstalk. View full abstract»

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  • Target-Handling Capacity of a Phased-Array Tracking Radar

    Publication Year: 1972 , Page(s): 43 - 50
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1956 KB)  

    The factors which affect the target-handling capacity of an agile-beamelectronically scanned multitarget-tracking radar are reviewed and analyze.Consideration is given to the choice of strategy for dwell allocation amongtargets, the choice of trajectory extrapolation algorithms for target tracking, and the determination of saturation target acquisition rates. Emphasisis placed upon radar systems w... View full abstract»

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  • Noncoherent Detection of Split-Phase FSK by Multiple Predetection Filtering

    Publication Year: 1972 , Page(s): 51 - 63
    Cited by:  Patents (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2410 KB)  

    When the cumulative drift in the center frequency of a binary split-phase FSK signal exceeds the peak deviation of the signal, a conventional noncoherent receiver (i.e., one provided with only two IF filters) may be unable to achieve the probability of error per bit which the designer desires. This limitation may be overcome if the receiver is provided with a bank of more than two contiguous filte... View full abstract»

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  • The Digital-Data-Transition Tracking Loop as a Practical Implementation of an Optimum Self-Bit Synchronizer

    Publication Year: 1972 , Page(s): 64 - 67
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (864 KB)  

    It is shown that the digital-data-transition tracking loop, previouslydevised using physical reasonings, is actually a practical implementation of an optimum (maximum likelihood) self-bit synchronizer. View full abstract»

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  • Optimum Transponder Design for Pseudonoise-Coded Ranging Systems, Weak Signals

    Publication Year: 1972 , Page(s): 68 - 72
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1195 KB)  

    Optimization of the bandwidth of a turnaround transponder is carried out for weak signals at the transponder receiver. Optimum transponder bandwidth is found to be around 0.77-1, where T is the period of one element of the ranging code. Linear transponders are compared with transponders having baseband limiting. Phase modulation is assumed. It is shown that, for weak signals, linear transponders a... View full abstract»

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  • Simple Radar Detection Calculation

    Publication Year: 1972 , Page(s): 73 - 74
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (357 KB)  

    Barton's [1] procedure is further simplified to require only the use of a single-valued detector loss curve plus ideal detector curves to calculate the performance of envelope detectors with postdetection integration. View full abstract»

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  • Loss from Approximations to Square-Law Detectors in Quadrature Systems with Postdetection Integration

    Publication Year: 1972 , Page(s): 75 - 77
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (513 KB)  

    The trend toward digital processing of radar and sonar signals has ledto the use of ¿baseband¿ or bipolar video signals. The processingof both the in-phase (I) and quadrature (Q) channels generally allows an exact representation of the signals, and no loss of sensitivity need occur. However, for reasons of economy or weight only one channel is often implemented. This correspondence shows that th... View full abstract»

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  • Noncoherent Detection of Sinusoidal Signals in Sinusoidal Clutter

    Publication Year: 1972 , Page(s): 77 - 81
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (779 KB)  

    Probability density expressions associated with the noncoherent detection of a sinusoidal signal have been obtained. The signal is assumed to be imbedded in sinusoidal clutter at the same frequency and narrow-band Gaussian noise. The density expressions are shown to be a function of the signal-to-noise power ratio and the clutter-to-noise power ratio. The expressions have been numerically evaluate... View full abstract»

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  • Effect of Observation Errors on Satellite Attitude Estimation

    Publication Year: 1972 , Page(s): 81 - 84
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (684 KB)  

    A study of the effect of observation errors on the best least squares estimate of satellite attitude based on two sets of direction measurements, where one set contains two independent measurements which are corrupted by zero-mean normally distributed additive errors, is summarized. Using Monte-Carlo techniques, the statistics of the estimated rotation of the satellite, from a known reference, wer... View full abstract»

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  • Polygonal Detection Thresholds for In-Phase and Quadrature Channels

    Publication Year: 1972 , Page(s): 84 - 86
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (474 KB)  

    A joint detection threshold corresponding to a circle around the origin of the in-phase and quadrature components of a radar IF process is equivalent to envelope thresholding. Square and octagonal approximations to the circle are evaluated for prescribed false-alarm probabilities and the variation of detection probability with signal phase. View full abstract»

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  • Eascon '71 Luncheon Address

    Publication Year: 1972 , Page(s): 87 - 90
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  • Cumulative Index on Radar Systems

    Publication Year: 1972 , Page(s): 91 - 128
    Cited by:  Papers (4)
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  • Information for authors

    Publication Year: 1972 , Page(s): 128b
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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