Pub Date : 2000-10-10DOI: 10.1109/NAECON.2000.894986
T. Herald
Most customers demand the maximum performance for the minimum acquisition cost, thus the old adage, "I want the most bang for my buck." The US Military has historically paid high and even exorbitant prices in order to have a specific set of requirements met. Certainly not the "most" bang for the buck. In fact, frequently a system was obsolete the day it was fielded! However, the repercussions from Acquisition Reform have forced a new way of thinking such as performance-based requirements, open systems architectures, leveraging commercial-based products (such as fielding unmodified commercial laptop computers into battle-ready situations) and even migrating away from ADA requirements for software development. With the use of open standards, commercial technologies and commercial products, how is the Operation and Support Phase of these new age systems affected? What can be done with the existing Legacy and Non-developmental Item (NDI) systems? COTS seems hard to manage and impossible to control, how can the system stay operationally effective and viable? This paper addresses a tangible "How-to" process for creating a Technology Refreshment Strategy (applicable to Legacy, NDI and COTS-based systems), then the development of a evolutionary Technology Refreshment Plan that sets a vision for the Operation and Support of a fielded system solution. This Technology Refreshment Plan then feeds a Cost As an Independent Variable (CAIV) process that will be able to yield an accurate and manageable Total Ownership Cost (TOC) calculation. The focus today is on TOC, not just acquisition (or even production) cost. Here is where the feedback to the Systems Design and Development Process occurs. Once this model is set and tailored for a given set of customer requirements and reality, then the model can support trade study analyses in a consistent manner, and truly drive affordability, thus maximizing the biggest 'performance bang' for the 'development buck'.
{"title":"Technology refreshment strategy and plan for application in military systems a \"How-to systems development process\" and linkage with CAIV","authors":"T. Herald","doi":"10.1109/NAECON.2000.894986","DOIUrl":"https://doi.org/10.1109/NAECON.2000.894986","url":null,"abstract":"Most customers demand the maximum performance for the minimum acquisition cost, thus the old adage, \"I want the most bang for my buck.\" The US Military has historically paid high and even exorbitant prices in order to have a specific set of requirements met. Certainly not the \"most\" bang for the buck. In fact, frequently a system was obsolete the day it was fielded! However, the repercussions from Acquisition Reform have forced a new way of thinking such as performance-based requirements, open systems architectures, leveraging commercial-based products (such as fielding unmodified commercial laptop computers into battle-ready situations) and even migrating away from ADA requirements for software development. With the use of open standards, commercial technologies and commercial products, how is the Operation and Support Phase of these new age systems affected? What can be done with the existing Legacy and Non-developmental Item (NDI) systems? COTS seems hard to manage and impossible to control, how can the system stay operationally effective and viable? This paper addresses a tangible \"How-to\" process for creating a Technology Refreshment Strategy (applicable to Legacy, NDI and COTS-based systems), then the development of a evolutionary Technology Refreshment Plan that sets a vision for the Operation and Support of a fielded system solution. This Technology Refreshment Plan then feeds a Cost As an Independent Variable (CAIV) process that will be able to yield an accurate and manageable Total Ownership Cost (TOC) calculation. The focus today is on TOC, not just acquisition (or even production) cost. Here is where the feedback to the Systems Design and Development Process occurs. Once this model is set and tailored for a given set of customer requirements and reality, then the model can support trade study analyses in a consistent manner, and truly drive affordability, thus maximizing the biggest 'performance bang' for the 'development buck'.","PeriodicalId":171131,"journal":{"name":"Proceedings of the IEEE 2000 National Aerospace and Electronics Conference. NAECON 2000. Engineering Tomorrow (Cat. No.00CH37093)","volume":"6 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113932612","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}
Pub Date : 2000-10-10DOI: 10.1109/NAECON.2000.894924
J.C. Gallacher, J. Fiore
This paper argues that Continuous Time Recurrent Neural Networks (CTRNNs) provide a particularly attractive paradigm under which to evolve analog electrical circuits for use as device controllers. It will make these arguments both by appeal to existing literature and by the example of a successful project in the control of an autonomous robot. The paper will conclude with a discussion of future work and goals.
{"title":"Continuous time recurrent neural networks: a paradigm for evolvable analog controller circuits","authors":"J.C. Gallacher, J. Fiore","doi":"10.1109/NAECON.2000.894924","DOIUrl":"https://doi.org/10.1109/NAECON.2000.894924","url":null,"abstract":"This paper argues that Continuous Time Recurrent Neural Networks (CTRNNs) provide a particularly attractive paradigm under which to evolve analog electrical circuits for use as device controllers. It will make these arguments both by appeal to existing literature and by the example of a successful project in the control of an autonomous robot. The paper will conclude with a discussion of future work and goals.","PeriodicalId":171131,"journal":{"name":"Proceedings of the IEEE 2000 National Aerospace and Electronics Conference. NAECON 2000. Engineering Tomorrow (Cat. No.00CH37093)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125112478","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}
Pub Date : 2000-10-10DOI: 10.1109/NAECON.2000.894931
E. Ratazzi
Several new microelectromechanical (MEM) devices are being applied in the development of a 20 MHz to 40 GHz, multimode digital programmable software radio known as Ultra Comm. Utilization of these MEM devices, along with numerous other miniaturization technologies, has allowed the Ultra Comm program to achieve unprecedented advances in size, weight, power and performance. MEM devices are used extensively for tunable filters, radio frequency (RF) switches, and tunable matching networks. These devices have the characteristic of extremely high-Q operation (filters, resonators) and/or low insertion loss/high isolation (switches), while drawing negligible quiescent current because of the electrostatic principles upon which they operate. In addition to a detailed description of the MEM devices being developed and utilized by Ultra Comm, this paper will describe the overall radio architecture used and highlight some of the other advanced technologies being employed.
{"title":"Microelectromechanical devices for multimode communication systems","authors":"E. Ratazzi","doi":"10.1109/NAECON.2000.894931","DOIUrl":"https://doi.org/10.1109/NAECON.2000.894931","url":null,"abstract":"Several new microelectromechanical (MEM) devices are being applied in the development of a 20 MHz to 40 GHz, multimode digital programmable software radio known as Ultra Comm. Utilization of these MEM devices, along with numerous other miniaturization technologies, has allowed the Ultra Comm program to achieve unprecedented advances in size, weight, power and performance. MEM devices are used extensively for tunable filters, radio frequency (RF) switches, and tunable matching networks. These devices have the characteristic of extremely high-Q operation (filters, resonators) and/or low insertion loss/high isolation (switches), while drawing negligible quiescent current because of the electrostatic principles upon which they operate. In addition to a detailed description of the MEM devices being developed and utilized by Ultra Comm, this paper will describe the overall radio architecture used and highlight some of the other advanced technologies being employed.","PeriodicalId":171131,"journal":{"name":"Proceedings of the IEEE 2000 National Aerospace and Electronics Conference. NAECON 2000. Engineering Tomorrow (Cat. No.00CH37093)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130036946","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}
Pub Date : 2000-10-10DOI: 10.1109/NAECON.2000.894910
Yubin Xia, Lei Yan, Song Xiao, Tao Jing, Xuezhi Yang
A new apparatus has been recently developed in the Institute of RS and GIS of PKU. The apparatus is a digital photofinishing system that employs an OE (Optical Engine) for light source and a LCD (liquid crystal display) panel for digital imaging. This system applies digital imaging technologies in the conventional silver halide imaging chain. Traditional photofinishing has been enhanced by delivering new products to the consumer and by delivering existing services and products at higher quality and less cost. In the system, the newly released product of LCD is used to write digital images onto conventional AgX color negative paper, and the technologies, equipment, and software, highly leveraged from the imaging PC, are used. With an emphasis on the unique features, the advancement beyond the current capabilities of traditional AgX imaging in the photofinishing is represented.
{"title":"The research and development of a full color digital image photofinishing system","authors":"Yubin Xia, Lei Yan, Song Xiao, Tao Jing, Xuezhi Yang","doi":"10.1109/NAECON.2000.894910","DOIUrl":"https://doi.org/10.1109/NAECON.2000.894910","url":null,"abstract":"A new apparatus has been recently developed in the Institute of RS and GIS of PKU. The apparatus is a digital photofinishing system that employs an OE (Optical Engine) for light source and a LCD (liquid crystal display) panel for digital imaging. This system applies digital imaging technologies in the conventional silver halide imaging chain. Traditional photofinishing has been enhanced by delivering new products to the consumer and by delivering existing services and products at higher quality and less cost. In the system, the newly released product of LCD is used to write digital images onto conventional AgX color negative paper, and the technologies, equipment, and software, highly leveraged from the imaging PC, are used. With an emphasis on the unique features, the advancement beyond the current capabilities of traditional AgX imaging in the photofinishing is represented.","PeriodicalId":171131,"journal":{"name":"Proceedings of the IEEE 2000 National Aerospace and Electronics Conference. NAECON 2000. Engineering Tomorrow (Cat. No.00CH37093)","volume":"154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123312222","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}
Pub Date : 2000-10-10DOI: 10.1109/NAECON.2000.894938
A. Palazotto, S.K. Naboulsi
The focus of this paper is on the geometric imperfection in a parabolic shape associated with inflated structures which are built by joining together the main envelope (i.e. the reflector and canopy), the torus, and catenary support. The parabolic inflated structure is modeled using the finite element method incorporating the commercial finite element code ABAQUS. The purpose of the torus is to provide a stable boundary condition for the main envelope. Furthermore, the type of boundary condition imposed on the main envelope affect the shape of the inflated structure. The interaction between the torus and the reflector-canopy is investigated.
{"title":"The modeling of a torus solar array","authors":"A. Palazotto, S.K. Naboulsi","doi":"10.1109/NAECON.2000.894938","DOIUrl":"https://doi.org/10.1109/NAECON.2000.894938","url":null,"abstract":"The focus of this paper is on the geometric imperfection in a parabolic shape associated with inflated structures which are built by joining together the main envelope (i.e. the reflector and canopy), the torus, and catenary support. The parabolic inflated structure is modeled using the finite element method incorporating the commercial finite element code ABAQUS. The purpose of the torus is to provide a stable boundary condition for the main envelope. Furthermore, the type of boundary condition imposed on the main envelope affect the shape of the inflated structure. The interaction between the torus and the reflector-canopy is investigated.","PeriodicalId":171131,"journal":{"name":"Proceedings of the IEEE 2000 National Aerospace and Electronics Conference. NAECON 2000. Engineering Tomorrow (Cat. No.00CH37093)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131863678","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}
Pub Date : 2000-10-10DOI: 10.1109/NAECON.2000.894919
D. Ott, G. George, R.A. Breitbach, R. Brooks
The United States Air Force (USAF) is evaluating the next generation ground-based Command and Control (C2) equipment. As part of that effort the 133d Air Control Squadron (ACS) Iowa Air National Guard (ANG) has been an active participant in the Joint Expeditionary Force Experiment (JEFX) '99. The efforts of the ANG have included the development and testing of a prototype next generation C2 configuration, the Battle Control Center (BCC) and Remote Communications Cell (RCC) at JEFX. This paper will discuss the transition of the existing Modular Control Equipment (MCE) to the BCC, the JEFX experiment, lessons learned and further development of state-of-the-art C2 visualization systems. This paper will focus on the traditional MCE tasks that were performed in the BCC. Additional topics such as time critical targeting (TCT) and real-time imagery were also demonstrated at JEFX '99, but will not be addressed in this paper due to the time and space constraints.
{"title":"The Battle Control Center, a report from the Joint Expeditionary Force Experiment (JEFX) '99","authors":"D. Ott, G. George, R.A. Breitbach, R. Brooks","doi":"10.1109/NAECON.2000.894919","DOIUrl":"https://doi.org/10.1109/NAECON.2000.894919","url":null,"abstract":"The United States Air Force (USAF) is evaluating the next generation ground-based Command and Control (C2) equipment. As part of that effort the 133d Air Control Squadron (ACS) Iowa Air National Guard (ANG) has been an active participant in the Joint Expeditionary Force Experiment (JEFX) '99. The efforts of the ANG have included the development and testing of a prototype next generation C2 configuration, the Battle Control Center (BCC) and Remote Communications Cell (RCC) at JEFX. This paper will discuss the transition of the existing Modular Control Equipment (MCE) to the BCC, the JEFX experiment, lessons learned and further development of state-of-the-art C2 visualization systems. This paper will focus on the traditional MCE tasks that were performed in the BCC. Additional topics such as time critical targeting (TCT) and real-time imagery were also demonstrated at JEFX '99, but will not be addressed in this paper due to the time and space constraints.","PeriodicalId":171131,"journal":{"name":"Proceedings of the IEEE 2000 National Aerospace and Electronics Conference. NAECON 2000. Engineering Tomorrow (Cat. No.00CH37093)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133208035","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}
Pub Date : 2000-10-10DOI: 10.1109/NAECON.2000.894974
Xing Mengdao, B. Zheng
One dimensional (1D) images can be used to characterize the major features of the target and serve for the purpose of automatic target recognition (ATR). For conventional low resolution radar, 1D range profiles cannot be measured, but 1D cross-range images can be obtained by processing a sequence of radar echoes. There have been few papers in the literature discussing how to obtain 1D cross-range images, but the image resolutions obtained are low, and even some wrong images were obtained because of the following two reasons: one is that translational motion compensation (TMC) is not correct; the other is that 3D and nonuniform rotational motions are not considered. In this paper we propose new methods to tackle these two problems. First we use the minimum entropy method to compensate the translational motion. Second, based on the observation that the scatterer sub-echoes are not sinusoidal and should be approximated as linear frequency modulation (LFM) signals after TMC due to the 3D and nonuniform rotation of the target, we propose an extended RELAX high resolution method to estimate the multicomponent LFM signals, and obtain dynamic instantaneous 1D cross-range images. The methods are evaluated using both simulated data and real radar data.
{"title":"One dimensional cross-range imaging and methods to improve the resolution of low resolution radar targets","authors":"Xing Mengdao, B. Zheng","doi":"10.1109/NAECON.2000.894974","DOIUrl":"https://doi.org/10.1109/NAECON.2000.894974","url":null,"abstract":"One dimensional (1D) images can be used to characterize the major features of the target and serve for the purpose of automatic target recognition (ATR). For conventional low resolution radar, 1D range profiles cannot be measured, but 1D cross-range images can be obtained by processing a sequence of radar echoes. There have been few papers in the literature discussing how to obtain 1D cross-range images, but the image resolutions obtained are low, and even some wrong images were obtained because of the following two reasons: one is that translational motion compensation (TMC) is not correct; the other is that 3D and nonuniform rotational motions are not considered. In this paper we propose new methods to tackle these two problems. First we use the minimum entropy method to compensate the translational motion. Second, based on the observation that the scatterer sub-echoes are not sinusoidal and should be approximated as linear frequency modulation (LFM) signals after TMC due to the 3D and nonuniform rotation of the target, we propose an extended RELAX high resolution method to estimate the multicomponent LFM signals, and obtain dynamic instantaneous 1D cross-range images. The methods are evaluated using both simulated data and real radar data.","PeriodicalId":171131,"journal":{"name":"Proceedings of the IEEE 2000 National Aerospace and Electronics Conference. NAECON 2000. Engineering Tomorrow (Cat. No.00CH37093)","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130519508","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}
Pub Date : 2000-10-10DOI: 10.1109/NAECON.2000.894892
N. Jablonski, J. Caruso
The evaluation and certification of tactical radar systems is a complex undertaking, which requires extensive data collection, analysis, and testing. In the past, the radar community has been limited in its ability to extract data for offline evaluation by relatively low peripheral device speeds, storage capacity, and limited computing resources. The Naval Surface Warfare Center, Dahlgren Division (NSWCDD) has been investigating distributed computing techniques using commercial components for an advanced radar control computer system. A portion of this project is dedicated to enhancing the tools and methodologies required to debug, evaluate, and certify tactical radar control systems. The paper describes the evaluation system and the performance levels that were achieved using widely available, commercial-off-the-shelf components (COTS). The final product provides more than adequate data extraction capacity while minimizing impact on the radar application, and consuming less than 30% of computer processing time. Achieving this level of performance allows analysts to gather data from all possible data collection points simultaneously throughout an evaluation run, thus providing unconstrained analysis capability. Data compression is employed to produce extended recording times and enhance the performance of slower data peripherals such as those using magneto-optical media.
{"title":"Data extraction in a real-time environment using COTS equipment","authors":"N. Jablonski, J. Caruso","doi":"10.1109/NAECON.2000.894892","DOIUrl":"https://doi.org/10.1109/NAECON.2000.894892","url":null,"abstract":"The evaluation and certification of tactical radar systems is a complex undertaking, which requires extensive data collection, analysis, and testing. In the past, the radar community has been limited in its ability to extract data for offline evaluation by relatively low peripheral device speeds, storage capacity, and limited computing resources. The Naval Surface Warfare Center, Dahlgren Division (NSWCDD) has been investigating distributed computing techniques using commercial components for an advanced radar control computer system. A portion of this project is dedicated to enhancing the tools and methodologies required to debug, evaluate, and certify tactical radar control systems. The paper describes the evaluation system and the performance levels that were achieved using widely available, commercial-off-the-shelf components (COTS). The final product provides more than adequate data extraction capacity while minimizing impact on the radar application, and consuming less than 30% of computer processing time. Achieving this level of performance allows analysts to gather data from all possible data collection points simultaneously throughout an evaluation run, thus providing unconstrained analysis capability. Data compression is employed to produce extended recording times and enhance the performance of slower data peripherals such as those using magneto-optical media.","PeriodicalId":171131,"journal":{"name":"Proceedings of the IEEE 2000 National Aerospace and Electronics Conference. NAECON 2000. Engineering Tomorrow (Cat. No.00CH37093)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123402072","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}
Pub Date : 2000-10-10DOI: 10.1109/NAECON.2000.894947
J.R. Mingrone, A. Farahat, D. King
Performance of software components may be characterized in a way that permits software architects to predict response times that result after integrating multiple components. Using information about individual component execution time and invocation rates, this method predicts processor utilization and "thread" latency (where a thread is an executed string of components). The method derives component budgets which can be individually verified via empirical tests and which assure system response times meet specified requirements. In the event budgets do not support satisfactory system response times, the method determines what components should be optimized in order to produce the desired system result. When calculating budgets or when identifying optimization goals for components, the method considers difficulty of component optimization. The method is based on a simple application of mathematical concepts from queuing theory and optimization theory and may be implemented using a spreadsheet. This method was used to develop component based budgets for a large complex software intensive system.
{"title":"Assessing system performance using component level performance specifications","authors":"J.R. Mingrone, A. Farahat, D. King","doi":"10.1109/NAECON.2000.894947","DOIUrl":"https://doi.org/10.1109/NAECON.2000.894947","url":null,"abstract":"Performance of software components may be characterized in a way that permits software architects to predict response times that result after integrating multiple components. Using information about individual component execution time and invocation rates, this method predicts processor utilization and \"thread\" latency (where a thread is an executed string of components). The method derives component budgets which can be individually verified via empirical tests and which assure system response times meet specified requirements. In the event budgets do not support satisfactory system response times, the method determines what components should be optimized in order to produce the desired system result. When calculating budgets or when identifying optimization goals for components, the method considers difficulty of component optimization. The method is based on a simple application of mathematical concepts from queuing theory and optimization theory and may be implemented using a spreadsheet. This method was used to develop component based budgets for a large complex software intensive system.","PeriodicalId":171131,"journal":{"name":"Proceedings of the IEEE 2000 National Aerospace and Electronics Conference. NAECON 2000. Engineering Tomorrow (Cat. No.00CH37093)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115794903","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}
Pub Date : 2000-10-10DOI: 10.1109/NAECON.2000.894926
S. Ahmad, M. Shaheed, A. Chipperfield, M. Tokhi
Modelling of innovative aircraft such as UAVs, X-wing, tilt body and delta-wing is not easy. This paper presents a nonlinear system identification method for modelling air vehicles of complex configuration. This approach is demonstrated through a laboratory helicopter. Extensive time and frequency-domain model-validation tests are employed to instil confidence in the estimated model. The estimated model has a good predictive capability and can be utilized for nonlinear flight simulation studies. The approach presented is suitable for modelling new generation air vehicles.
{"title":"Nonlinear modelling of a twin rotor MIMO system using radial basis function networks","authors":"S. Ahmad, M. Shaheed, A. Chipperfield, M. Tokhi","doi":"10.1109/NAECON.2000.894926","DOIUrl":"https://doi.org/10.1109/NAECON.2000.894926","url":null,"abstract":"Modelling of innovative aircraft such as UAVs, X-wing, tilt body and delta-wing is not easy. This paper presents a nonlinear system identification method for modelling air vehicles of complex configuration. This approach is demonstrated through a laboratory helicopter. Extensive time and frequency-domain model-validation tests are employed to instil confidence in the estimated model. The estimated model has a good predictive capability and can be utilized for nonlinear flight simulation studies. The approach presented is suitable for modelling new generation air vehicles.","PeriodicalId":171131,"journal":{"name":"Proceedings of the IEEE 2000 National Aerospace and Electronics Conference. NAECON 2000. Engineering Tomorrow (Cat. No.00CH37093)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122659008","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}
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