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IEEE Transactions on Aerospace and Electronic Systems

Issue 6 • Date Nov. 1968

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Displaying Results 1 - 21 of 21
  • [Front cover]

    Publication Year: 1968, Page(s): c1
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  • IEEE Aerospace and Electronic Systems Group

    Publication Year: 1968, Page(s): nil1
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  • [Breaker page]

    Publication Year: 1968, Page(s): nil1
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  • From the Editors

    Publication Year: 1968, Page(s): 821
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  • Clutter Suppression Properties of Weighted Pulse Trains

    Publication Year: 1968, Page(s):822 - 828
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2455 KB)

    A common but troublesome requirement on radar sensors is the detection of a target in the interference from undesired scatterers, or clutter. Systems with coherent processing of pulse trains are uniquely suited for the purpose because, with pulse trains, it is possible to concentrate the receiver output for particular values of Doppler and thus suppress the clutter by Doppler filtering. This paper... View full abstract»

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  • A Self-Adjusting Single-Degree-of-Freedonm Free-Fall Environment Simulator

    Publication Year: 1968, Page(s):829 - 836
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2825 KB)

    The free-fall space environment can be simulated on earth by using a test apparatus enjoying the property that its center of mass and center of rotation coincide. Such a condition can be realized by appropriately distributing mass about the center of rotation. This paper describes the mechanization and operation of a system that automatically distributes mass about the test apparatus center of rot... View full abstract»

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  • Electronically Variable Time-Delay Network for Broad-Band Phased-Array Steering

    Publication Year: 1968, Page(s):837 - 844
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3099 KB)

    This paper describes an electronically variable time-elay network that has been developed specffically for time-delay steering of a phased-array antenna. The network consists of microwave dispersive delay lines and two broad-band mixers; its delay is a function of the mixers' local oscillator frequency. The particularly advantageous feature of this network is that its phase is invariant with delay... View full abstract»

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  • Multiple-Target Monopulse Radar Processing Techniques

    Publication Year: 1968, Page(s):845 - 854
    Cited by:  Papers (24)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2110 KB)

    The problem of determining target parameters of a known number of radar targets falling in the same range-Doppler-angle-angle resolution cell is examined for the noise-free case. The required minimum number of radar beams is determined, based upon approximating the beam patterns by a Taylor series expansion, both for the general problem and for factorable beams. Signal processors for target positi... View full abstract»

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  • Threshold Investigation of Phase-Locked Discriminators

    Publication Year: 1968, Page(s):855 - 863
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2044 KB)

    This paper is primarily an investigaton of a second-order phased-locked loop in the threshold region, with the loop filter chosen as (1/1+¿s) or (1+¿1s/1+¿s). First-order loop results are also given. Effects of loop parameters, detuning error, and modulation are studied. It is shown that the loop with filter (1+¿1s/1+¿s) can be built two ways with same bandwidth and damping. One loop gives mu... View full abstract»

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  • The SDP-1 Stored-Program Computer

    Publication Year: 1968, Page(s):864 - 870
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1766 KB)

    A stored-program computer could be used to advantage on small scientific spaeeraft because of its flexibility. This paper describes the design and programming of a stored-program computer specifically adapted to this particular application. In order to be suitable for use in a small scientific spacecraft, a computer must have the following characteristics: reliability, low power drain, light weigh... View full abstract»

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  • Strapdown Gyros in a Back-to-Back Configuration

    Publication Year: 1968, Page(s):871 - 873
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (887 KB)

    A back-to-back connection of two gyros per axis is suggested that eliminates some of the errors due to cross coupling between the components of vehicle angular rates and accelerations. In particular, the error due to output axis angular acceleration, the anisoinertia error, and the spin reference axis rectification error theoretically vanish. Use of redundant and identical strapdown systems for th... View full abstract»

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  • Comparison of Electrooptic Modulation Methods

    Publication Year: 1968, Page(s):874 - 878
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1911 KB)

    A comparison is made among normal AM, wide-band analog FM, and PCM as applied to transmission of real-time TV pictures via an electrooptic space communication system. The comparison is based on the requirement to receive a subjectively noise-free TV picture. Based on the results of this comparison, it is concluded that analog-FM subcarrier modulation is the best practical choice for transmission o... View full abstract»

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  • Optical Processing Techniques for Simultaneous Pulse Compression and Beam Sharpening

    Publication Year: 1968, Page(s):879 - 885
    Cited by:  Papers (17)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2187 KB)

    A technique is described in which the separate techniques of beam sharpening (by synthetic antenna methods) and pulse compression are converted into a single two-dimensional operation, which is carried out with a coherent optical processor. View full abstract»

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  • On the Design of a Large Aperture Radar for Target Imaging

    Publication Year: 1968, Page(s):886 - 892
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3639 KB)

    This paper describes the design, construction, and performance of an experimental radar, in which an electronically scanned X-band array is employed as the receiving antenna. Backscatter from targets uniformly illuminated from a separate transmitting antenna is intercepted by 128 horn antennas, unequally spaced over a nine-foot circular aperture. The received signals are processed electronically t... View full abstract»

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  • Reduced Averaging Processing in Sonar for Extended Target Detection

    Publication Year: 1968, Page(s):893 - 909
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3240 KB)

    First Page of the Article
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  • Broadcasting of a Digitally Coded List of Transponder Equipped Aircraft Scanned by FAA Ground Radars as a Means of Collision Avoidance, Navigation, Air Traffic Structuring, and Airfield Approach

    Publication Year: 1968, Page(s):910 - 911
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (419 KB)

    An air traffic control system is proposed in which 1) all aircraft are equipped wit transponders, 2) FAA radar sites broadcast a digitally coded list of the identity, altitude, and coordinates of aircraft scanned, 3) each aircraft on receiving this list converts it into a PPI display with the blip of that aircraft branded and blips of off-altitude aircraft blanked, and 4) superimposed on this disp... View full abstract»

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  • Comments on ``The Effect of Normally Distributed Random Phase Errors on Synthetic Array Gain Patterns''

    Publication Year: 1968, Page(s): 911
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  • Book Review

    Publication Year: 1968, Page(s): 912
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  • Abstracts EASCON '68

    Publication Year: 1968, Page(s):913 - 923
    Cited by:  Papers (1)
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  • Information Transactions Available in Microfiche Form

    Publication Year: 1968, Page(s): 924
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  • 1968 Index IEEE Transactions on Aerospace and Electronic Systems

    Publication Year: 1968, Page(s):nil2 - nil21
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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