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Aerospace and Navigational Electronics, IRE Transactions on

Issue 4 • Date Dec. 1961

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Displaying Results 1 - 18 of 18
  • IRE Transactions on Aerospace and Navigational Electronics

    Publication Year: 1961 , Page(s): c1
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  • IRE Professional Group on Aerospace and Navigational Electronics

    Publication Year: 1961 , Page(s): c2
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  • Table of contents

    Publication Year: 1961 , Page(s): 119
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  • The Editor Reports

    Publication Year: 1961 , Page(s): 120
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  • New Chairman and Vice Chairman of PGANE

    Publication Year: 1961 , Page(s): 121
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  • Introduction to Automatic Altitude Reporting for Air Traffic Control

    Publication Year: 1961 , Page(s): 122 - 124
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  • The Application of Altitude Telemetering to the ICAO Secondary Surveillance Radar System

    Publication Year: 1961 , Page(s): 125 - 130
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    The operational requirements for telemetering altitude are listed, together with general aspects of the system which can affect implementation. The special problems which arise in the application of altitude information to the ICAO SSR system are discussed, and it is shown that it is essential to incorporate certain design features in the communications channel and in the coding system to minimize garbling. The experimental United Kingdom system of altitude telemetering is briefly described, together with proposals for expanding the encoding scale to cover any future requirement. View full abstract»

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  • Altitude Reporting on the ATCRBS---An Iinpatient Appraisal

    Publication Year: 1961 , Page(s): 131 - 136
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    The airline industry, continuing its support for the development and implementation of the ATC radar beacon system, now strongly endorses the use of automatic altitude reporting. In discussing the pitfalls which have delayed implementation of the basic ATC radar beacon system, this paper calls attention to the need for automatic altitude reporting in the ATC system, and the need to provide it quickly. In describing the need for automatic altitude information for both en route and terminal ATC, the choice of an altitude-interrogation mode, the 100-foot-altitude reporting increment, and the flexible code structure being proposed which is intended to cover all significant altitude strata to provide both coarse-grain and fine-grain information as required, are discussed. The paper also describes both early and recent actions by the airline industry in the field of secondary radar. View full abstract»

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  • ATC Operational Uses for Autoinatic Altitude Reporting

    Publication Year: 1961 , Page(s): 137 - 138
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    Surveillance radar provides the air traffic controller with only a two-dimensional picture of traffic in a three-dimensional environment. Recently, the Federal Aviation Agency embarked upon the development of an automatic altitude-reporting capability utilizing radar beacon. Its addition to the system will enable presentation of both specific aircraft identification and altitude in alpha-numeric symbology directly on the controller's radarscope adjacent to related radar targets. Operational requirements for this new tool indicate a future capability of reporting altitude from the surface to 100,000 feet in 100-foot increments. The three-dimensional capability achieved will minimize the need for pilots to make verbal position reports, and will virtually eliminate reports with regard to altitude alone. Giving the controller this capability will reduce the need for arriving and departing aircraft to level out during descent and climb in order to maintain altitude separation from others on conflicting courses. While the aircraft is enroute, altitude change will be much less a problem to the controller, permitting the pilot much greater freedom in selection of optimum cruising altitudes. Automatically reported altitude data is essential to the sophisticated computerized environments being developed for reducing ATC bottlenecks. View full abstract»

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  • ATCRBS Experimental Altitude Reporting Subsystem and Developments

    Publication Year: 1961 , Page(s): 139 - 144
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    FAA's Aviation Research and Development Service (ARDS), has recently embarked on an active program of establishing an altitude reporting subsystem for the Air Traffic Control Radar Beacon System (ATCRBS), internationally known as Secondary Surveillance Radar (SSR). This action is in response to a long-standing requirement for the provision of altitude information to the Air Traffic Control System by a means other than flight plan and voice transmission of altitude information from the cockpit. The use of the ATCRBS for altitude reporting utilizes precisely the same techniques used for the identification function on Mode A. The major difference is that while codes are manually selected for identification, they would be automatically selected for altitude through an automatic encoding system from a source of barometric altitude. The essential characteristics of the experimental subsystem are detailed, and the Federal Aviation Agency's (FAA) progress to date is described. View full abstract»

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  • Code Configuration for Automatic Altitude Reporting via ATCRBS

    Publication Year: 1961 , Page(s): 144 - 148
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    The development of an unambiguous unit-distance code configuration for automatic altitude reporting via the ATC Radar Beacon System is described. This code provides for compatible altitude reporting in increments of 100, 250, and 500 feet within one common system. The code is developed by using Karnaugh mapping techniques. Some assumptions and requirements are set forth to provide guidance for the determination of the most desirable code. A brief presentation of a developmental code in use in the United Kingdom is also given. It is concluded that the flexibility of the unit-distance code affords a satisfactory compromise which can satisfy the objectives of the various users. View full abstract»

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  • Altitude Processing in the ATCRBS

    Publication Year: 1961 , Page(s): 149 - 152
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    Equipment to process and display beacon-derived altitude information is being developed to enhance the operational capability of the Air Traffic Control Radar Beacon System (ATCRBS). Beacon identity and altitude information assists the air traffic controller to establish positive identification quickly and reliably; radar handoff procedures are completed more efficiently. The principle altitude functions of the beacon video processor under development are 1) To provide a digital display, in decimal form, of altitude data received from aircraft equipped with modified transponders which reply to a ground-to-air altitude interrogation. 2) To provide simultaneous altitude zone filtering of the altitude reply codes and tri-coordinate (3-D) radar data. 3) To provide altitude information to associated beacon video tracking units for aircraft tracking. The fully transistorized processor converts beacon video code trains from serial to parallel form. Leading edge decoding, pulse regeneration, pulse standardization, and destructive readout techniques are used to detect and eliminate spurious or garbled codes and to correctly process closely interleaved replies. Aircraft spaced as close as 344 feet in slant range are correctly read out. The equipment is designed for operation in either a computerizedor noncomputerized environment. View full abstract»

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  • Altitude Sensing for Automatic Altitude Reporting

    Publication Year: 1961 , Page(s): 153 - 156
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    A short resume is given of the means used to measure altitude for reporting purposes, possible sources of error, followed by a description of three of the most commonly used analog-digital converters. View full abstract»

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  • Abstracts

    Publication Year: 1961 , Page(s): 157 - 158
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  • Contributors

    Publication Year: 1961 , Page(s): 158 - 159
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  • Index to authors

    Publication Year: 1961 , Page(s): 160 - 161
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  • Suggestions to Authors

    Publication Year: 1961 , Page(s): 162
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  • Institutional listings

    Publication Year: 1961 , Page(s): 163
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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