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IRE Transactions on Military Electronics

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  • 1. A High-Resolution Radar Combat-Surveillance System

    Publication Year: 1961, Page(s):127 - 131
    Cited by:  Papers (43)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3068 KB)

    An account is given of the development of the AN/UPD-1 (XPM-1) system. This airborne mapping radar, by synthesizing an extremely long antenna which expands in length in direct proportion to radar range, provides a linear resolution in the azimuth direction that is constant for all radar ranges. View full abstract»

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  • 2. Solar Direct-Conversion Power Systems

    Publication Year: 1962, Page(s):91 - 98
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4827 KB)

    A survey is made of the present status of technology of solar photovoltaic, photoemissive, thermoelectric and thermionic power systems for spacecraft. The subjects of radiation damage to solar cells, power-system design, and solar simulation are reviewed. Various types of solar power systems are discussed and compared with respect to weight, availability, environmental tolerance, and cost. It is c... View full abstract»

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  • 3. Characteristics of High-Conversion-Efficiency Gallium-Arsenide Solar Cells

    Publication Year: 1962, Page(s):20 - 27
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1546 KB)

    Gallium-arsenide solar cells having conversion-efficiency values greater than 11 per cent are described. Crystalline properties of gallium arsenide are discussed, and cell design considerations are given. Gallium arsenide provides several advantages over silicon in the fabrication of high-efficiency cells having improved temperature characteristics and higher radiation-resistance properties. Typic... View full abstract»

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  • 4. Jamming of Communication Systems Using FM, AM, and SSB Modulation

    Publication Year: 1961, Page(s):8 - 11
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (737 KB)

    Jamming of voice communication systems is a very ungrateful task and ``brute force'' jammers have to be used, while other systems, such as radar, can be jammed effectively using low power but sophisticated jammers. Geographical situation is very much against the jammer, particularly in ground-based mobile communication systems. The propagation of ground wave is such that a rapid increase of jammin... View full abstract»

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  • 5. The Radar Measurement of Range, Velocity and Acceleration

    Publication Year: 1961, Page(s):51 - 57
    Cited by:  Papers (43)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1079 KB)

    This paper is a study of the ultimate attainable accuracy in the radar measurement of range, range rate, and range acceleration. It is assumed that these quantities are to be measured by a coherent radar with a large output signal-to-noise ratio. The approach is entirely theoretical, and the accuracy evaluated is the accuracy that would be attained with an ideal receiver which performs maximum-lik... View full abstract»

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  • 6. Airborne Pulse-Doppler Radar

    Publication Year: 1961, Page(s):116 - 126
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1857 KB)

    Doppler radars are employed for the detection of moving targets whose radar echo area is much smaller than the ground clutter return. Moving targets are separated from clutter on a frequency basis by utilizing the Doppler phenomenon. Continuous-wave Doppler radars have a practical maximum-range capability because the leak-through between the transmitter and receiver causes receiver saturation. Thi... View full abstract»

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  • 7. Some Early Developments in Synthetic Aperture Radar Systems

    Publication Year: 1962, Page(s):111 - 115
    Cited by:  Papers (43)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2711 KB)

    This paper describes some of the early developments in the synthetic aperture technique for radar application. The basic principle and later extensions to the theory are described. The results of the first experimental verification at the University of Illinois are given as well as the results of subsequent experiments. The paper also includes a section comparing some of the important features of ... View full abstract»

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  • 8. Phase-Amplitude Monopulse System

    Publication Year: 1962, Page(s):140 - 146
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2309 KB)

    Phase monopulse, amplitude monopulse, and phase-amplitude monopulse are compared. The latter uses only two antenna feeds and by controlling the aperture illumination from these feeds has a separation of the illumination phase centers in one axis and opposed tilts of the phase fronts, or squint, in the other axis. It is described as more fundamental or less redundant than four-horn or other multiho... View full abstract»

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  • 9. The Radar Beacon Comes Into Its Own

    Publication Year: 1960, Page(s):228 - 230
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1911 KB)

    This article tells the missile radar-beacon story from the beginning of V-2 missile firing in America until today. It compares the weight, dimensions, characteristics, and uses of former beacons with those used today. It also describes briefly new beacons under development, and tells how some of the future missiles and satellites may use these beacons. View full abstract»

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  • 10. Orbit Determination from Single Pass Doppler Observations

    Publication Year: 1960, Page(s):336 - 344
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1335 KB)

    This paper presents a method for determining the orbit of a satellite by observing, in the course of a single pass, the Doppler shift in the frequency of a CW signal transmitted from the ground and reflected by the satellite to one or more ground-based receivers at remote sites. The method is sufficiently general that, with minor modification, it may be applied to any type of satellite or ICBM tra... View full abstract»

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  • 11. A Large Time-Bandwidth Product Pulse-Compression Technique

    Publication Year: 1962, Page(s):169 - 173
    Cited by:  Papers (11)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (821 KB)

    A pulse-compression radar system which utilizes a linear FM waveform has a theoretical upper limit to the magnitude of its compression ratio or time-bandwidth product. This limit is a function of the observed target's relative radial velocity, and the effect on the return signal is characterized by both a pulse stretching and amplitude reduction if the limit is exceeded. The use of a logarithmic p... View full abstract»

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  • 12. New Materials for Primary Batteries

    Publication Year: 1962, Page(s):72 - 77
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1060 KB)

    The selection of new anode-cathode combinations for primary cells is described on the basis of ampere-hour capacity, theoretical and operating potential, handling properties with respect to the design of primary batteries, and limitations placed on the selection of active components by unusual electrolyte requirements. Theoretically, for the design of dry and reserve primary cells, the most desira... View full abstract»

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  • 13. Some Considerations in the Design of the Guidance and Control System for Discoverer

    Publication Year: 1959, Page(s):184 - 185
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1132 KB)

    The limited number of flight tests to date has indicated that the Discoverer satellite will be a highly reliable and effective system from which the ARPA and the Air Force expect to gain valuable additional knowledge of outer space. The achievement of this high degree of reliability and effectiveness of the satellite means that each of its subsystems must, in fact, be even more reliable and effect... View full abstract»

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  • 14. The Totem Pole

    Publication Year: 1962, Page(s):339 - 345
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (755 KB)

    First Page of the Article
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  • 15. General Description and Design of the Configuration of the Juno I and Juno II Launching Vehicles

    Publication Year: 1960, Page(s):70 - 77
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3753 KB)

    The Juno I Vehicle consists of a modified Redstone Booster with three solid propellant upper stages. The second and third stages are made up by clustering the same rocket used as the fourth stage. The upper stages are contained in a spinning launcher. The spinning provides stability during flight. The Juno II vehicle uses the same upper stages as the Juno I and the booster is a modified Jupiter. T... View full abstract»

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  • 16. Tracking in Space by DOPLOC

    Publication Year: 1960, Page(s):332 - 335
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (764 KB)

    A satellite and space vehicle tracking system of the Doppler type, known as DOPLOC, is described. The characteristics of the heart of the system, a phase-locked tracking filter, are discussed from the viewpoints of bandwidth, signal-to-noise ratio, and accuracy of Doppler frequency measurement. System sensitivity to low energy signals is shown to be 2 ?? 10-29 watts at a bandwidth of 1 ... View full abstract»

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  • 17. Principles of Pulse Compression

    Publication Year: 1961, Page(s):109 - 116
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1575 KB)

    For good radar system performance, a transmitted waveform is desired that has 1) wide bandwidth for high range resolution and 2) long duration for high velocity resolution and high transmitted energy. In a pulse-compression system, a long pulse of duration T and bandwidth F (product of T and F greater than one) is transmitted. Received echoes are processed to obtain short pulses of duration 1/F. C... View full abstract»

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  • 18. SCAMP-a single-channel monopulse radar signal processing technique

    Publication Year: 1962, Page(s):146 - 152
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1157 KB)

    A new monopulse radar signal processing technique is described, which requires only a single IF amplifer channel to instantaneously process the returns from all targets within a beamwidth. The basic signal processor consists of a wide-band amplifier-hard limiter, followed by appropriate band-pass filtering. The mathematical basis for its operation is developed and corroborating experimental result... View full abstract»

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  • 19. A Comparison of Techniques for Achieving Fine Azimuth Resolution

    Publication Year: 1962, Page(s):119 - 121
    Cited by:  Papers (25)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (505 KB)

    In the discussion of techniques for achieving azimuth resolution, it is instructive to compare the achievable resolution for three cases: 1) the conventional case for which ¿R Res = k ¿ D 2) the unfocussed synthetic antenna case for which Res = k¿¿R 3) the focussed synthetic antenna case for which Res = kD where ¿ is wavelength, D is aperture of physical antenna used, and R is range, and the ... View full abstract»

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  • 20. The Future of Pulse Radar for Missile and Space Range Instrumentation

    Publication Year: 1961, Page(s):330 - 351
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5853 KB)

    An account of instrumentation radar development is given, and advantages and disadvantages of radar as compared to other instruments are discussed. Capabilities of present monopulse radars are described, based upon actual test data from the AN/FPS-16. This radar has a range of 200 miles on echo targets of one-square-meter cross section and can track to an accuracy of 0.1 mil in angle and 5 yards i... View full abstract»

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  • 21. Radar Beacons for IRBM/ICBM

    Publication Year: 1959, Page(s):175 - 177
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (665 KB)

    This paper summarizes problems which confront engineers who are responsible for the design of radar beacons and beacon antennas used in IRBM and ICBM test vehicles. The most important factors which affect compatibility between the beacon and tracking radars at the test range are enumerated. Cited also are several design areas which should be correlated with the test range prior to finalization of ... View full abstract»

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  • 22. Multiple-Target Data Handling with a Monopulse Radar

    Publication Year: 1962, Page(s):359 - 366
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1254 KB)

    Recognition and application of fundamental signal-gain relationships inherent to monopulse radars provide the means for determining the angle offset pattern and hence, angular position of all targets within the beam of a monopulse radar. With this method some 20 to 40 targets can be tracked with dynamic accuracies that approach the static accuracy of the radar, thus permitting precise determinatio... View full abstract»

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  • 23. Deep Space Communications

    Publication Year: 1960, Page(s):158 - 162
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2493 KB)

    This paper discusses the various factors that influenced the design of the TRACE deep space communications system, the choice of the operating frequency, and the selection of a suitable ground antenna. The configuration of the three different microwave communications system stations??launch, injection, and deep space??employed in the Pioneer III and IV experiments is given, together with a descrip... View full abstract»

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  • 24. Recent Advancements in Basic Radar Range Calculation Technique

    Publication Year: 1961, Page(s):154 - 164
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4741 KB)

    A procedure for radar range calculation is described, reflecting current knowledge of the effects of external natural noise sources, atmospheric-absorption losses, and the refractive effect of the normal atmosphere. The range equation is presented in terms of explicitly defined and readily evaluated quantities. Curves and equations are given for evaluating the quantities that are not ordinarily kn... View full abstract»

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  • 25. Plasma Propulsion Devices for Space Flight

    Publication Year: 1959, Page(s):34 - 41
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1654 KB)

    An analysis of some of the more immediate space missions indicates that a large increase in payload can be achieved when electrical propulsion is used instead of chemical propulsion. For missions in the gravitational field of the Earth and to the Moon, the optimum specific impulse range for electrical propulsion is from about 1500 to 5000 seconds. Electrical propulsion with neutral plasma devices ... View full abstract»

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  • 26. A Land-Mass Radar Simulator Incorporating Ground and Contour Mapping and Terrain Avoidance Modes

    Publication Year: 1959, Page(s):105 - 114
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1701 KB)

    This paper describes a method of simulating the radar displays of an airborne radar system. The simulator employs a scan-programmed vidicon tube and a low-power light source in conjunction with a three-dimensional terrain model to simulate radar return from land-mass formations, cultural areas, and target complexes. All effects of a moving aircraft, including velocity, heading, altitude, position,... View full abstract»

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  • 27. Analysis of Signal Processing Distortion in Radar Systems

    Publication Year: 1962, Page(s):219 - 227
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2111 KB)

    Signal processing distortion degrades radar performance with respect to target data accuracy, ambiguity and resolution. A measure of the loss in performance is obtained by the development of a modified radar ``uncertainty function'' which results from the presence of time- and frequency-domain distortions in the system. Losses due to the major sources of distortion are evaluated and several compen... View full abstract»

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  • 28. Steerable Array Radars

    Publication Year: 1961, Page(s):80 - 94
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3575 KB)

    The general characteristics of radars using large planar steerable array antennas are discussed. The need for an amplifier for each element is shown, and the tolerances and stability requirements for the amplifiers are discussed. Array geometry, pattern formation and gain, mutual coupling, and beam-steering techniques are summarized. Element minimization and signal-processing techniques are analyz... View full abstract»

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  • 29. Theory and Evaluation of Gain Patterns of Synthetic Arrays

    Publication Year: 1962, Page(s):122 - 129
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1044 KB)

    The results of an analysis of synthetic array gain patterns, including sidelobe response, are summarized. Both focused and unfocused arrays are examined. The phase time history of echos from reflectors on the ground as a function of position is used to modify the equations for the broadside synthetic array for application to forward-looking antenna arrays. The dependence of the ``optimal'' length ... View full abstract»

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  • 30. Use of Passive Redundancy in Electronic Systems

    Publication Year: 1961, Page(s):202 - 208
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1386 KB)

    Circuit design predicated solely upon the premise of providing circuits with greater and greater immunity against component tolerances at some point results in an increase in catastrophic failure rates. Thus, circuits which are overdesigned to provide maximum protection against drift failures may actually contribute to a lower system reliability than do those circuits which are designed to operate... View full abstract»

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  • 31. Detection and Evaluation of Space Radiations

    Publication Year: 1959, Page(s):160 - 162
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (717 KB)

    In the very near future man will escape from his terrestrial environment and venture into space. The first flights will be limited space voyages circling the earth only one or sereral times at altitudes from 100 to 500 miles. As technological advances permit, these space journeys will become longer in duration and farther from earth until travel between planets in our solar system is accomplished.... View full abstract»

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  • 32. Some Reliability Aspects of weapon and Other Space Systems Using Ballistic Missile Boosters

    Publication Year: 1959, Page(s):173 - 174
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (493 KB)

    This paper shows that there is a need to differentiate, at least on occasion, between weapon and nonweapon space systems where their reliability is concerned. Three criteria are offered as a means of determining whether this differentiation need be made in the case of any particular nonweapon space system. Where this differentiation should be made, possible reliability approaches for the nonweapon... View full abstract»

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  • 33. High-Precision Angle Determination by Means of Radar in a Search Mode

    Publication Year: 1961, Page(s):317 - 325
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1189 KB)

    One of the more difficult requirements to meet in the design of radars is that of accurate angular measurement. In tracking radars the azimuth and elevation of a target can be measured to a high degree of accuracy by a nulling method. Two of the most practical methods for obtaining angular accuracy in search radars are discussed in this paper. The first method is an interferometer technique employ... View full abstract»

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  • 34. Radar Resolution of Closely Spaced Targets

    Publication Year: 1962, Page(s):197 - 204
    Cited by:  Papers (30)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1322 KB)

    This paper presents an analysis of the problem of the resolvability of two radar targets which are located close together, in the sense that any parameters of the targets being measured (e.g., range, range rate, range acceleration, azimuth, azimuth rate, etc.) are close together. Arbitrary sets of parameters are allowed, and it is assumed there is additive noise of arbitrary but known spectral sha... View full abstract»

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  • 35. The Effect of Normally Distributed Random Phase Errors on Synthetic Array Gain Patterns

    Publication Year: 1962, Page(s):130 - 139
    Cited by:  Papers (15)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1147 KB)

    In the practical formation of synthetic array patterns the individual signals which are integrated to form the array will sustain uncompensated phase shifts. If these uncompensated phase shifts are deterministic, the evaluation of their effect on the synthetic array radiation pattern is straightforward. On the other hand, if the uncompensated phase shifts are random, such as would be produced by p... View full abstract»

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  • 36. A Brief Survey of Direct Energy Conversion Devices for Possible Space-Vehicle Application

    Publication Year: 1959, Page(s):46 - 51
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1048 KB)

    A brief review is given of various types of devices for converting heat or radiant energy directly into readily available electrical form. These devices include the thermoelectric generator, the photovoltaic cell, the thermionic converter, and the photoemissive converter. The discussion is from the point of view of possible space-vehicle application. An attempt is made to indicate in a general way... View full abstract»

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  • 37. Physical Entities and Mathematical Representation

    Publication Year: 1962, Page(s):349 - 358
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1619 KB)

    Certain basic postulates about physical observables yield the structure of their mathematical representation. Measure equations are contrasted with quantity equations, and measurement units with abstract units. The abstract vector spaces in which observables are represented comprise the core of dimensional analysis. Systems of equations, units, and dimensions are discussed, along with comments on ... View full abstract»

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  • 38. Lightweight Integrated Doppler Navigation System for Army Aircraft

    Publication Year: 1960, Page(s):565 - 571
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5249 KB)

    This paper presents some of the problems associated with the Signal Corps search for a suitable Doppler navigator for both lightweight fixed wing and rotary wing aircraft. The unique approaches discussed in detail are: The choice of a lightweight 3-axis stabilized antenna, position computation and display in cartesian coordinates for compatibility with Universal Transverse Mercator charts, a movin... View full abstract»

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  • 39. Scientific Objectives of the Able-3 Program

    Publication Year: 1959, Page(s):129 - 143
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3527 KB)

    The purpose of the Able-3 program is to place a scientific observatory in a highly elliptic satellite orbit. A scintillation counter, ion chamber, Geiger counter, and proportional counter telescope in the payload permit comprehensive mapping of corpuscular radiation over a large volume of the geomagnetic region, including the Van Allen radiation belts. Simultaneously, the fundamental static quanti... View full abstract»

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  • 40. Birth, Life, and Death in Microelectronic Systems

    Publication Year: 1961, Page(s):191 - 201
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3614 KB)

    In order to exploit the technological promises of microelectronics, electronic system techniques must be developed so that defective portions of a system can be tolerated without system malfunction. Such defects might be introduced during manufacture (at birth), or cause errors during operation (life). The number of permanent failures which could be endured by a system before it fails completely w... View full abstract»

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  • 41. The Breakthrough of the "Scharnhorst"-Some Radio-Technical Details

    Publication Year: 1961, Page(s):2 - 7
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3579 KB)

    First Page of the Article
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  • 42. The Equivalence Among Three Approaches to Deriving Synthetic Array Patterns and Analyzing Processing Techniques

    Publication Year: 1962, Page(s):116 - 119
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (550 KB)

    The equivalence of the vector addition, cross-correlation, and filtering approaches to deriving synthetic array patterns and analyzing processing techniques is demonstrated here. A mathematical model is defined which establishes a geometry, a transmitted and received signal, and a general synthetic array weighting function. A preliminary analysis of this model derives the signals received at the f... View full abstract»

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  • 43. Determination of Satellite Trajectories from Track-While-Scan Radar Measurements

    Publication Year: 1961, Page(s):306 - 311
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (901 KB)

    Classical methods for determining satellite orbits were limited to the use of angle information and only rough estimates of distance. With radar, it is possible to obtain good range information, but poor angular accuracy. Three approximate schemes are described which are ideally suited to track-while-scan radar observations. The accuracy obtained with these techniques has been demonstrated by the ... View full abstract»

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  • 44. Application of Electronic Distance Measuring Equipment in Surveying

    Publication Year: 1960, Page(s):263 - 267
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1070 KB)

    Recent improvements in electronic distance-measuring equipment have made it possible to obtain higher degrees of accuracy in surveys for mapping. Electronic equipment has therefore become a far-reaching and powerful tool when used for establishing geodetic control in remote areas, between distant triangulation stations, over impassable terrain, and through intervening vegetation, where it is impos... View full abstract»

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  • 45. Early Orbit Determination Scheme for the Juno Space Vehicle

    Publication Year: 1960, Page(s):129 - 144
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3248 KB)

    The present status (1959-1960) of the ABMA Early Orbit Determination scheme for the Juno space vehicle is described, The design of the scheme was essentially influenced by three factors: 1) its origin centered around post flight vehicle analysis; 2) the flexibility required for accepting varied kinds of data; and 3) the potential of high speed computers concentrated in the ABMA Computation Laborat... View full abstract»

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  • 46. Automatic Frequency Control of Magnetrons

    Publication Year: 1961, Page(s):45 - 50
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1047 KB)

    A practical AFC system for both X-band and Ku-band magnetron radar transmitters has been developed. This system meets the needs of three radar systems currently in production. Frequency stabilization is accomplished by electronically controlling the magnetron load impedance. Therefore, the magnetron ``pulling figure'' is put to use. The closed loop AFC system maintains frequency stability to bette... View full abstract»

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  • 47. Problems Concerning the Thermal Design of Explorer Satellites

    Publication Year: 1960, Page(s):98 - 112
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6542 KB)

    The thermal control of the Explorer satellites that were launched by Development Operations Division of the Army Ballistic Missile Agency is described. Explorers I through V were launched under the direction of the Department of Defense, and Explorer VII under the sponsorship of NASA. The thermal design of these satellites was based on a study of environmental conditions, and the effect of many pa... View full abstract»

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  • 48. Analysis of Satellite Motion from Radio Reception

    Publication Year: 1960, Page(s):361 - 365
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (708 KB)

    This paper presents an analysis of a radio signal originating from a tumbling and rotating earth satellite. An equation is derived for the relative motion of the unit position vector pointing from the observer to the satellite with respect to the satellite coordinate system. From this, the amplitude variation of the ground received radio signal is calculated. It is further shown how a recording of... View full abstract»

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  • 49. High-Accuracy Electronic Tracking of Space Vehicles

    Publication Year: 1959, Page(s):162 - 172
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2022 KB)

    It is the purpose of this paper to show that optical accuracies can be reached with electronic tracking if the refractive index is known at the site of the radar, as well as at the site of the target. This is the case in tracking space vehicles with microwaves. The index can be measured at the tracking site and it is unity beyond the denser atmosphere. Ionospheric influences can be neglected in th... View full abstract»

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  • 50. High-Power Traveling-Wave Tubes for Radar Systems

    Publication Year: 1961, Page(s):39 - 45
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2083 KB)

    Data obtained on high-power traveling-wave tubes at S and C band indicate performance suitable for the final amplifier in a wide bandwidth phase coherent radar transmitter. Static phase measurements demonstrate the capability of parallel operation of tubes and the feasibility of use in pulse compression systems. Gain and power output data show that for the most efficient operation a programmed dri... View full abstract»

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Aims & Scope

This Transactions ceased publication in 1962. The new retitled publication is IEEE Transactions on Aerospace and Electronic Systems.

Full Aims & Scope