{"title":"Integrated fault tolerant control law","authors":"T. Sadeghi, K. Lai","doi":"10.1109/NAECON.1995.521984","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521984","url":null,"abstract":"This paper gives a progress report for developing an integrated, fault tolerant control law (IFTCL) which has capability for control reconfiguration and post stall maneuvering. To integrate these two technologies in an aircraft flight control system is attractive because in post stall conventional surfaces loose their effectiveness which resembles the aircraft in a conventional flight loosing its control surfaces due to battle damage or actuator failure. To develop such a control technique concurrent efforts were initiated. These efforts consisted of developing and evaluating control techniques for IFTCL, modifying a 6DOF high performance aircraft (HPA) model to have thrust vectoring capability, and laying out guidelines for developing a full-up, nonlinear control law (with transition logic) capable of continuously reconfiguring aircraft effecters for post stall maneuvers and reconfiguration due to battle damage and/or actuator failure.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116479454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Automatic target recognition based on incoherent radar returns","authors":"Fu Qiang, Yu Wenxian","doi":"10.1109/NAECON.1995.521924","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521924","url":null,"abstract":"The problem of reliable automatic target recognition (ATR) from incoherent radar returns is discussed. In the problems under consideration, feature extraction methods are divided into two basic types: (1) Feature extraction directly based on time-domain description; (2) Feature extraction based on multiple transformation technique. In this paper, we shall demonstrate the problem of feature extraction by considering two examples of ship target recognition. The main algorithms and the recognition processing are discussed in detail. The experimental results show that a high reliability of recognition can be achieved.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127551517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The role of EDI in readiness logistics","authors":"B. J. Moore, R. Basye","doi":"10.1109/NAECON.1995.522050","DOIUrl":"https://doi.org/10.1109/NAECON.1995.522050","url":null,"abstract":"Today armed conflicts may be played out in a matter of days rather than years as in the past. The superior weapons that make this possible are highly sophisticated and complex. The price tag of these weapons may run into billions of dollars which requires the purchase and maintenance of fewer end items than in the past. Now, more than ever in history, major end item readiness is a determining factor in our ability to win an armed conflict. Major end item readiness relies on the ability to keep the fleet of tanks, planes, ships, or missiles, maintained and ready for use and the ability to quickly repair any item damaged in service and bring it quickly back into play. Meeting this goal, however, has increased in difficulty exponentially in recent decades. Causes of this increase in difficulty include the number of different major end items in existence today, the number and geographic dispersion of the maintenance depots, and the number of vendors supplying components for each of these items. As always, the key to meeting these logistics goals is information. Electronic Data Interchange (EDI) is a viable technology to help the DOD meet these challenges today.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133522193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Technology insertion problems and solutions for aging avionics systems","authors":"B. Coker, N. Lareau","doi":"10.1109/NAECON.1995.522048","DOIUrl":"https://doi.org/10.1109/NAECON.1995.522048","url":null,"abstract":"As military budgets shrink, military contractors are under increasing pressure to produce high performance, low cost systems. For new weapons systems, this pressure generally has meant exploiting the economies of scale of standardized, military-approved microprocessor chips. As currently-deployed systems age, an equally great need exists to tap these same economies of scale to extend the useful lives of older defense systems in a cost-effective manner. This paper discusses the design methodology used to upgrade the radar system aboard a tactical fighter plane. In particular, it will concentrate on those techniques used to provide hardware flexibility while meeting the design goal of form, fit, and functional compatibility with the currently fielded radar system.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131017702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A new way for DoD to do business: the J-MASS marketplace","authors":"W. McQuay","doi":"10.1109/NAECON.1995.522028","DOIUrl":"https://doi.org/10.1109/NAECON.1995.522028","url":null,"abstract":"It is current DoD policy to use commercial off-the-shelf software whenever it meets DoD requirements. The application of this policy to modeling and simulation has resulted in the concept of \"The Joint Modeling and Simulation System (J-MASS) Marketplace\". J-MASS is designed as an Open Systems Architecture with the capability for the Simulation Support Environment (SSE) to be expanded by the addition of site specific software. In the \"J-MASS Marketplace\" industry will build commercial tools to work with J-MASS and individual organizations will license what they need for their particular site. The J-MASS SSE is a framework or backplane into which everything else plugs. A J-MASS product release would have the core capabilities, but the unique needs of various organizations would be satisfied by industry. This paper addresses how the J-MASS marketplace could work and how compliance can be defined. It will outline opportunities for industry in both building software for the marketplace and in defining the marketplace concept.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128168481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"32-bit embedded processors: the push for higher performance","authors":"M. Harvey","doi":"10.1109/NAECON.1995.521967","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521967","url":null,"abstract":"In the evolving world of avionics and defense system design, many engineers face the problem of designing a higher performance product with lower power requirements and a small form-factor. Microcontrollers meet the integration and power restrictions of embedded designs, but do not provide enough throughput and performance. Today, avionics designs need the integration of a microcontroller with the performance of a microprocessor. Many companies are providing embedded microprocessors to meet this need. New integrated 32-bit microprocessors offer fast data manipulation with the features needed to reduce a design's chip-count and power consumption. With today's applications, system designers must move to integrated, surface-mount microprocessors that satisfy their design issues. This paper explores the advantages of integrating peripherals with a powerful 32-bit microprocessor. It details the power management and peripheral features that make integrated microprocessors the answer to small form-factor avionics designs.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134113112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Radar target identification of aircraft using structural features by correlation method","authors":"Chen Pin, D. Ping, Zhuan Zhao Wen","doi":"10.1109/NAECON.1995.521921","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521921","url":null,"abstract":"Under the wideband high range resolution fully polarized radar background, we present an approach to aircraft radar target classification that exploits the relationship between the physical structure of the observed and the stepped frequency backscatter response. First, we represent the radar backscatter signal measurements as a set of down-range scattering centers parameterized by a Prony modeling technique. Next, using the relative range, size, and polarimetric shape of resulting parametric scattering centers, we form a description of the \"substructure\" of the target. Finally, we use these \"structural descriptions\" of measured backscatter signal to classify the target by the Modified Correlation Method. The results of experiments show that correct identification rates of five scale model aircraft are 92.19%, 83.7%, 81.2%, 90%, 95.8%. We suggest that reliable aircraft identification is possible provided structural feature are used.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"274 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132129325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Some problems of the application for multiple target tracking algorithm","authors":"Chen-yang Yang, Shao-hong Li, S. Mao","doi":"10.1109/NAECON.1995.521956","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521956","url":null,"abstract":"In this paper, some problems of the realization in the airborne multiple target tracking data processing are discussed. In order to reduce the computation load and the storage requirement in the airborne multiple target tracking (MTT) system, nearest neighbour algorithm that is easy realized should be applied to assign the observations to the tracks. When the decoupled Kalman filters in the line-of-sight (RHV) coordinate is adopted to maintain tracks, rectangular gate can be used to relate in each decoupled axis respectively. The statistical distance required in association must be calculated jointly in all the axes. The filter data obtained from data processing algorithm must be converted to the kinetic parameters of the targets in the earth coordinate, i.e. the speed and yaw of the targets when they are output to the command and attack systems. The computing formula of the speed and yaw of the targets and the relation between their estimate error and the filter errors are presented in this paper. The above-mentioned methods are realized in a digital signal processor (DSP) chip TMS320C30. In the laboratory environment, a real-time signal simulator is used as a substitute for radar, and the radar video signal of its output is provided for the experiments. It is shown by the results of the experiments that multiple targets can be tracked steadily by those methods. In the condition of signal-to-noise rate SNR=3:1, the range filter error is 1/3 of range cell and azimuth filter error is 1/70 of the beam width in the range of 80 km.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126985305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Today's mainstream commercial microprocessors-raising the bar on performance for military and avionics designs","authors":"T. Wett","doi":"10.1109/NAECON.1995.521966","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521966","url":null,"abstract":"With modern day avionics and weapons systems requiring a never-ending increase in performance, the military and aerospace industry must learn to adopt the latest microprocessor technology for these designs. Microprocessor performance level requirements which typically were at or below 50 MIPS in the avionics market are now exceeding the 50 MIP requirement. Only today's high-end microprocessors utilizing advanced design techniques for the PC, notebook, server and workstation markets can meet this performance requirement. To utilize today's microprocessors in the military and aerospace industries requires some modifications in silicon for power management and some additional peripheral integration. The highly competitive portable PC or notebook market is driving new proliferations of these high-end microprocessors providing the high-performance, low-power embedded processors ideal for the military and aerospace marketplace. Extended temperature and military offerings of these new generation products are emerging for these markets. The authors look at the current state of the military and aerospace marketplace. They explore today's high-end microprocessors and commercial markets that are driving the embedded processors suitable for the military and aerospace applications. Design trends to increase processor performance are discussed with a few words of caution for future high-end microprocessors.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122979794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Low-cost solution to narrowband GPS interference problem","authors":"G. Dimos, T. Upadhyay, T. Jenkins","doi":"10.1109/NAECON.1995.521928","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521928","url":null,"abstract":"This paper discusses the narrowband/wideband mix of potential interferences to GPS and describes the results of a recent successful technology demonstration which established the efficacy of a precorrelation temporal filter solution to narrowband interference. In addition to describing the theory of operation of the temporal filter solution and its interference suppression performance in laboratory tests, this paper discusses potential dual use applications of the Air Force/Mayflower precorrelation temporal filter. It is anticipated that the unintentional interference problem in commercial GPS applications is characteristic of narrowband interference, and therefore it can be fully mitigated by the temporal filter solution discussed.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"2005 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128576379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}