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Aerospace and Electronics Conference, 1988. NAECON 1988., Proceedings of the IEEE 1988 National

Date 23-27 May 1988

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  • Proceedings of the IEEE 1988 National Aerospace and Electronics Conference: NAECON 1988 (Cat. No.88CH2596-5)

    Publication Year: 1988
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    Freely Available from IEEE
  • On high-speed data bus performance analysis

    Publication Year: 1988 , Page(s): 106 - 111 vol.1
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (324 KB)  

    The adequacy of using average throughput analysis in determining the relative performance of high-speed data bus networks is discussed. Using analytical means, the performance of three different linear bus implementations and the SAE ring bus are examined in terms of low-to-moderate, high, and worst-case throughput delays, and theoretical maximum throughput. It is shown that factors that have a ma... View full abstract»

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  • LAVI 1553 B communication system

    Publication Year: 1988 , Page(s): 114 - 120 vol.1
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (504 KB)  

    The avionics in the LAVI aircraft is comprised of about 20 embedded computer subsystems interconnected by means of a MIL-STD-1553 B communication network. This network, consisting of two dual redundant communication channels, handles approximately 300 messages, part of which are periodic and part of which are randomly generated. In addition, many messages cannot tolerate long delay times. The auth... View full abstract»

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  • The ATAMM procedure model for concurrent processing of large grained control and signal processing algorithms

    Publication Year: 1988 , Page(s): 121 - 128 vol.1
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (656 KB)  

    An overview is presented of a model for describing data and control flow associated with the execution of large-grained, decision-free algorithms in a special distributed computer environment. The ATAMM (Algorithm-To-Architecture Mapping Model) model provides a basis for relating an algorithm to its execution in a dataflow multicomputer environment. The ATAMM model features a marked graph Petri ne... View full abstract»

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  • Self-repairing flight control system program overview

    Publication Year: 1988 , Page(s): 504 - 511 vol.2
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (672 KB)  

    A description is given of the Self-Repairing Flight Control System Program, which began in 1984. The program objective was to improve the reliability, maintainability, survivability, and life cycle cost of aircraft flight control systems through aerodynamic reconfiguration and maintenance diagnostics. A description is given of the four program tasks designed to satisfy the objective. Reconfigurati... View full abstract»

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  • Mathematical utilities in PROLOG

    Publication Year: 1988 , Page(s): 1274 - 1279 vol.4
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (320 KB)  

    To make PROLOG a more powerful and versatile language for scientific/engineering use, two mathematical packages were written. The first is a list/vector/matrix operations package providing a set of elementary operations for list manipulation and vector/matrix algebra. The second package provides the transcendental functions including the trigonometric functions and their inverses, exponential and ... View full abstract»

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  • Performance of fiber optic sensors for aircraft applications

    Publication Year: 1988 , Page(s): 162 - 167 vol.1
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (360 KB)  

    Measured performance is presented for passive fiber-optic sensors including a rotary position sensor, a pressure sensor, and a temperature sensor. A liner position sensor derived from the principles of the rotary sensor is also presented. The use of a common sensing principle utilizing wavelength-division multiplexing is detailed. The requirements for the light source and receiver/decoder and the ... View full abstract»

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  • Expert system for depot maintenance of the dual miniature inertial navigation system

    Publication Year: 1988 , Page(s): 1369 - 1373 vol.4
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (284 KB)  

    Methods used to implement a knowledge-based system, to assist in the depot maintenance of a complex inertial navigation system, are outlined. Discussed are the needs for a knowledge-based system and the preparations necessary to modify the present equipment to accept an expert system. Also described are actions involved in setting-up the initial system and benefits expected from using an expert sy... View full abstract»

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  • An expert system for VLSI datapath synthesis

    Publication Year: 1988 , Page(s): 1237 - 1244 vol.4
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (568 KB)  

    VDE (VLSI Datapath Expert) is an expert system designed to aid in the datapath synthesis of VLSI system design. VDE takes a behavioral description of the system to be designed and maps it into a structural representation. The behavioural description, which contains a list of the desired register transfers, exists as a text representation of an annotated and extended Petri net graph (PNG). The syst... View full abstract»

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  • The measures of a system-performance, life-cycle cost, system effectiveness, or what?

    Publication Year: 1988 , Page(s): 1434 - 1439 vol.4
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (348 KB)  

    It is argued that the true measures of a system include many different factors relating to technical performance, system effectiveness, life-cycle cost, supportability, etc. All of these factors, as applicable, must be considered on an integrated basis, and must be addressed early in the system design process. Otherwise, as in the past, many of the systems being developed will be found to not meet... View full abstract»

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  • Logistics data integration system (LOGDIS): connecting logisticians to their data

    Publication Year: 1988 , Page(s): 1553 - 1556 vol.4
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (248 KB)  

    An overview of the LOGDIS prototype at Wright-Patterson and Hill Air Force Bases is presented. The LOGDIS prototype effort grew from an AFLC (Air Force Logistic Center) requirement for a common interface to logistics databases residing on dissimilar hosts in geographically distributed locations. AFLC with the assistance of the Lawrence Livermore National Laboratory (LLNL) installed two prototype s... View full abstract»

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  • UD factorization applied to airborne Kalman-filter-based fusion

    Publication Year: 1988 , Page(s): 326 - 333 vol.1
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (408 KB)  

    To ensure numerical accuracy and stability for real-time Kalman filter implementation, Bierman's upper diagonal (UD) factorization is used. The use of multiple sensors to form a more accurate state vector has included combining infrared search and track (IRST), electronic support measures (ESM), and radar sensor data, with applications to track initialization/deletion, association correlation, and... View full abstract»

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  • The performance of linear fiber optic data buses

    Publication Year: 1988 , Page(s): 168 - 173 vol.1
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (312 KB)  

    Measured performance data for linear fiber-optic data bus configurations is presented. Requirements and measurements for the individual data bus components including fiber-optic couplers, transmitters, and receivers are given, including environmental performance. Demonstrated performance for several linear data bus configurations with up to 69 nodes and data rates up to 50 Mb/s are presented View full abstract»

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  • CFAR analysis for medium PRF airborne pulse Doppler radars

    Publication Year: 1988 , Page(s): 259 - 263 vol.1
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (304 KB)  

    MFI-FET-frequency cell-averaging CFAR processors are discussed. The assumption that the clutter sample in the test cell and the reference cells are dependent and identically distributed (IID) is shown to be no longer valid for the frequency cell-averaging CFAR processor in medium PRF airborne pulse Doppler radars. A hybrid method of analytical computation and Monte-Carlo simulation for quantifying... View full abstract»

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  • Information-sharing approach to federated Kalman filtering

    Publication Year: 1988
    Cited by:  Papers (20)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (52 KB)  

    Summary form only given, as follows. An efficient information-sharing method is developed and applied to federated Kalman filters for distributed multisensor navigation systems. Based on a rigorous conservation-of-information principle, this novel method yields globally optimal or conservatively suboptimal filters with a variety of selectable operating characteristics. The method applies to decent... View full abstract»

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  • The flight control maintenance diagnostic system

    Publication Year: 1988 , Page(s): 1504 - 1509 vol.4
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (456 KB)  

    The flight control maintenance diagnostic system (FCMDS) program is concerned with investigating maintenance diagnostic approaches that will enhance the performance of US Air Force organizational-level maintenance technicians. Two aspects of the FCMDS program are discussed, namely, a ground-based maintenance diagnostic system and an embedded diagnostic system View full abstract»

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  • Change and configuration control in Ada environments: the `Stoneman' perspective revisited

    Publication Year: 1988 , Page(s): 600 - 607 vol.2
    Cited by:  Patents (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (556 KB)  

    Problem areas that arise when attempting to control Ada development systems are pointed out. It is argued that these problems cannot be addressed through manual means of control, and it is shown how change and configuration control (CCC) addresses them. A case study is presented that follows the development of flight simulator software View full abstract»

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  • A computer-based training tool for Jovial J73

    Publication Year: 1988 , Page(s): 670 - 677 vol.2
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (528 KB)  

    The authors present one approach to training maintenance programmers in an older language, Jovial J73, in the context of the development of a computer-based training course. The benefits of this type of course include continuous availability and relatively modest cost. The course design was based on a two-week JOVIAL class that was conducted by SofTech for the US Air Force (ASD) Language Control F... View full abstract»

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  • Electronic warfare situation assessment processing requirements for fighter aircraft of the 1990s

    Publication Year: 1988 , Page(s): 220 - 223 vol.1
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (228 KB)  

    An overview is presented of the required algorithm for electronic warfare (EW) situation-assessment, its interfaces with the multisensor fusion function and the resource/response management (R2M) function, and threat data support needs. The algorithm requirements discussed include; threat reference, intent, lethality, countermeasures effectiveness, and risk. The author describes how Kal... View full abstract»

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  • Steady-state performance of the decoupled Kalman filter

    Publication Year: 1988 , Page(s): 334 - 339 vol.1
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (236 KB)  

    A steady-state covariance analysis is discussed in the study the performance of a six-state, decoupled Kalman track filter. Analytical and numerical results indicate that, for a considerable range of filter gains and target line-of-sight (LOS) rates, the decoupled filter is unstable, and its steady-state root-mean-square tracking errors are unbounded View full abstract»

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  • An emulator for ITARS

    Publication Year: 1988 , Page(s): 79 - 82 vol.1
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (244 KB)  

    A software emulator has been developed to support the Integrated Terrain Access and Retrieval System (ITARS) under development for the US Air Force. The emulator has proven to be an excellent tool to develop terrain-following, terrain-avoidance, route-planning, SITAN, mission-planning, and other mission-related algorithms. ITARS is a repository of massive amounts of terrain elevation and feature d... View full abstract»

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  • Intelligent sensor management for beyond visual range air-to-air combat

    Publication Year: 1988 , Page(s): 264 - 269 vol.1
    Cited by:  Papers (7)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (572 KB)  

    The design of an intelligent sensor management system has been completed as part of the US Air Force air-to-air attack management (A 3M) program. This system includes computer software and control/display concepts capable of being implemented in the fire control system of an advanced fighter aircraft. The A3M Sensor Manager provides coordinated adaptive control of the aircraf... View full abstract»

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  • Verification of electronic material properties and characterization of electronic component failures

    Publication Year: 1988 , Page(s): 1160 - 1161 vol.3
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (144 KB)  

    The relationship between failure analysis/fault isolation and improvements in reliability and maintainability of electronic hardware is discussed. How failure analysis is an essential part of improving electronic hardware integrity and system life is examined. Three studies are presented as examples of how recommendations determined by failure investigations can eliminate recurring problems in har... View full abstract»

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  • Terrain masking and threat avoidance using land mass data

    Publication Year: 1988 , Page(s): 540 - 545 vol.2
    Cited by:  Papers (1)  |  Patents (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (344 KB)  

    Digital land mass data applied for flight guidance are of increasing importance. Using this three-dimensional terrain information, three-dimensional flight paths can be calculated onboard the aircraft to maximize terrain masking and minimize threat exposure. The navigation aspect, terrain data presentation, flight path calculation and a system concept are discussed View full abstract»

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  • Considerations regarding the management of embedded computer system reserves

    Publication Year: 1988 , Page(s): 1381 - 1389 vol.4
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (624 KB)  

    Discusses the considerations involved in defining, forecasting, measuring, and managing embedded computer resource reserves from the conceptual phase through the maintenance phase of the host weapon system. It is reported that the demand for embedded computer systems continues to increase, and these systems are now being procured with an eye toward providing sufficient memory and processing reserv... View full abstract»

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