By Topic

IEEE Transactions on Aerospace and Electronic Systems

Issue 5 • Sept. 1980

Filter Results

Displaying Results 1 - 25 of 27
  • Table of contents

    Publication Year: 1980, Page(s): c1
    Request permission for commercial reuse | PDF file iconPDF (548 KB)
    Freely Available from IEEE
  • IEEE Aerospace and Electronic Systems Society

    Publication Year: 1980, Page(s):c2 - 740-a
    Request permission for commercial reuse | PDF file iconPDF (369 KB)
    Freely Available from IEEE
  • From the Editors

    Publication Year: 1980, Page(s):545 - 546
    Request permission for commercial reuse | PDF file iconPDF (300 KB)
    Freely Available from IEEE
  • IEEE AES - An Invitation

    Publication Year: 1980, Page(s):547 - 548
    Request permission for commercial reuse | PDF file iconPDF (230 KB)
    Freely Available from IEEE
  • ETS-II Experiments Part I: Japan's First Geostationary Satellite

    Publication Year: 1980, Page(s):549 - 557
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1414 KB)

    Engineering Test Satellite Type II (ETS-11) "Kiku-2" was launched on February 23, 1977, and positioned in geostationary orbit at 130°E on March 5. Propagation experiments have been carried out by using 3 coherent beacons at 1.7, 11.5, and 34.5 GHz on a 24 h/day basis from late in April. The project and related plans are outlined. The 4 papers which follow in this Transactions introduce the experi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • ETS-II Experiments Part II: Earth Station Facilities

    Publication Year: 1980, Page(s):558 - 566
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1785 KB)

    A part of the Earth station at the Kashima Branch of the Radio Research Laboratories has a highly sensitive receiving system newly designed for receiving 3 coherent and weak beacon signals transmitted from the Engineering Test Satellite Type-II (ETS-II) of Japan and obtaining propagation data on quasimillimeter and millimeter wavelengths. The ground system includes a main receiving station which h... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • ETS-II Experiments Part III: Weather Radar System

    Publication Year: 1980, Page(s):567 - 580
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4881 KB)

    The weather radar system used in conjunction with Earth-satellite propagation experiments for quantifying rainfall rate in a unit volume, determined by the beamwidth and the pulselength, is described. Firstly, methods for deriving rainfall rate per unit volume are stated in detail with special emphasis on calibration to determine unknown parameters associated with propagation losses in waveguides ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • ETS-II Experiments Part IV: Characteristics of Millimeter and Centimeter Wavelength Propagation

    Publication Year: 1980, Page(s):581 - 589
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1749 KB)

    Preliminary results of the ETS-II millimeter and centimeter wavelength propagation experiments are presented based on data collected over one year. Rain attenuation is discussed primarily from the statistical point of view. At 34.5 GHz attenuation in excess of 5, 10, and 19.5 dB were observed 1, 0.3, and 0.1 percent of the test time (5500 hr), respectively. At 11.5 GHz attenuation in excess of 2.5... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • ETS-II Experiments Part V: Effect of Ionosphere

    Publication Year: 1980, Page(s):590 - 603
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4503 KB)

    Propagation characteristics of gigahertz and very high frequency waves through the mid-latitude ionosphere have been studied applying the coherent beacon signals of 1.7, 11.5, and 34.5 GHz and the 136-MHz telemetry signal, which are emitted from the geostationary Engineering Test Satellite Type II (ETS-II). Total electron content (TEC) was obtained by measuring the differential phase shift between... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Tracking Multiple Targets Simultaneously with a Phased Array Radar

    Publication Year: 1980, Page(s):604 - 614
    Cited by:  Papers (15)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2023 KB)

    A new technique is described by which radar tracks can be established and maintained in a dense multitarget environment. These targets may fly in formation, maneuver relative to each other, or be on crossing paths. They may fade and reappear, lose their resolution, or become resolved. If the formation members move apart, the formation track is split into separate tracks. Typical requirements for a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • High-Density Avionic Power Supply

    Publication Year: 1980, Page(s):615 - 619
    Cited by:  Papers (15)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1291 KB)

    Dramatic reductions in size and weight have been achieved in the area of signal and information processing. Power conditioning circuits have not kept pace, primarily due to the relatively slow proggress ress in the passive energy storage and transformation devices. A novel converter topology is described that minimizes the task these components must perform and thereby achieve a significant improv... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Radar Target Detection and Map-Matching Algorithm Studies

    Publication Year: 1980, Page(s):620 - 625
    Cited by:  Papers (5)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1477 KB)

    Results of a study of adaptive threshold target detection and map-matching algorithms are presented. Log threshold processing is shown to be preferred over linear threshold processing when the clutter data surrounding the target cell is contaminated by other targets, decoy corner reflectors, or bright clutter cells. Whereas previous studies have resorted to extensive Monte-Carlo simulations of log... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Series 320 Radar: Three-Dimensional Air Surveillance for the 1980s

    Publication Year: 1980, Page(s):626 - 638
    Cited by:  Papers (3)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3441 KB)

    Air surveillance radars for this decade will be required to provide reliable target location and trajectory information in height as well as the conventional geographical coordinates. These threedimensional radars will perform this task in spite of adverse environmental conditions such as ground, airborne clutter, and electromagnetic interference. The use of powerful false-alarm control processing... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Combined Programmed and Adaptive Null Steering Technique

    Publication Year: 1980, Page(s):639 - 647
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1639 KB)

    The described method of antenna null steering makes use of calibrated and stored weight distributions for each solid angle increment of a radar search volume. Based upon direction measurement to an interference source, the appropriate weight distributions are calculated for each relative antenna position. In addition to the programmed part an adaptive inner loop is included for fine null adjustmen... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Computationally Efficient Approximation to a Discrete-Time Matched Filter

    Publication Year: 1980, Page(s):648 - 655
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1789 KB)

    When the number of filter coefficients is large, the solution of the discrete-time matched filter equation can be computationally difficult. In this paper several techniques are presented for approximating the impulse response of a matched filter without actually solving the matched filter equation. The performance of these approximating filters is analyzed and compared with the performance of the... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Rosette Constellations of Earth Satellites

    Publication Year: 1980, Page(s):656 - 673
    Cited by:  Papers (64)  |  Patents (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3365 KB)

    Satellite constellations having rosette (flowerlike) orbital patterns are described which exhibit better worldwide coverage properties than constellations previously reported in U.S. literature. The best rosettes with 5-15 satellites are identified and evaluated relative to prior results. In most cases, the best results are obtained by placing one satellite in each of N separate planes and by usin... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Pointing Error Statistics in Optical Beam Tracking

    Publication Year: 1980, Page(s):674 - 682
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1822 KB)

    In tracking optical beams from a source, a pointing error signal is derived from photodetecting the field in the receiver focal plane. This error signal is then used in some manner to control a gimballed system that continually points the receiver optics toward the source. When the source field undergoes turbulent transmission, the optical beam is attenuated and scattered, and the field is randoml... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Notes on SCPC-FM System Design and Performance

    Publication Year: 1980, Page(s):683 - 711
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4124 KB)

    In many domestic satellite communication systems single-channel per-carrier FM (SCPC-FM) has become the accepted transmission method for thin route communication. The SCPC-FM modem operates over a wide range of carrier frequencies and is designed to use satellite power and bandwidth efficiently. It incorporates elements which make the signal transfer complex, so the system behavior is not immediat... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • M-ary CPSK Detection with Noisy Reference and Interferences

    Publication Year: 1980, Page(s):712 - 720
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1630 KB)

    A general expression of the error probability on an M-ary coherent phase-shift-keyed (MCPSK) signal purturbed by a noisy reference carrier, multiple interferences, and additive Gaussian noise is presented taking into account the frequencey divider in the carrier recovery circuit. First, a new expression for the probability density function (pdf) of the phase of a composite wave of signal, multiple... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Passive Array Tracking of a Continuous Wave Transmitting Projectile

    Publication Year: 1980, Page(s):721 - 726
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (939 KB)

    Differential Doppler measurements by a passive array are used to track an unstable continuous wave (CW) source moving in a ballistic trajectory, e.g., a projectile carrying a proximity fuse. The ballistic equations of motion couple frequency measurements at various sections along the track with the track parameters at any arbitrary time, e.g., at impact. A nonlinear weighted leastsquare method is ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Some Results from Utilizing Doppler Derivatives

    Publication Year: 1980, Page(s):727 - 729
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    Explicit expressions of range, velocity, and the angle between them, as functions of a radar Doppler shift and its first two derivatives are given. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Model Error and the Direction-Finder Problem

    Publication Year: 1980, Page(s):729 - 732
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (678 KB)

    The error introduced into many direction-finder (DF) algorithms by the use of projections is discussed. Upper bounds for this error are calculated and formulas for calculating these bounds are extended to the case of nonconformal transformations. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Proposals for Simplifying Envelope Normalization in Adaptive Antenna Arrays

    Publication Year: 1980, Page(s):732 - 734
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    In adaptive antenna arrays using control loops the processing is determined under certain conditions by the covariance matrix Bmn = E(f(v*m)vn)𝒱n), where 𝒱1,..., 𝒱N are N-complex Gaussian noise video signals and f is some function of the phase of 𝒱m. Half of the storages and real multiplications could be saved by taking only the real part of 𝒱n. It will be s... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Note on the Ambiguity of Troposcatter Aircraft Interference Patterns

    Publication Year: 1980, Page(s):734 - 738
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (865 KB)

    Earlier investigators of troposcatter propagation phenomena have suggested that aircraft-created interference patterns observed at the receiving site can be used to measure aircraft motion within and near the common volume region. A simplified signal and scattering model is used to show that these interference signatures are ambiguous unless prior knowledge of the aircraft trajectory is available. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Convergence Rate of the Extended SMI Algorithm for Narrowband Adaptive Arrays

    Publication Year: 1980, Page(s):738 - 740
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (475 KB)

    An extended sample matrix inversion (SMI) algorithm can be used for minimizing the mse (mean-squared error) between the output of an N-element adaptive array and a desired reference signal. This algorithm is shown to yield mse within 3 dB of minimum (on the average) after (2N - 1) observations of the antenna element outputs. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

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