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Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995最新文献

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Analytical control synthesis for adaptive flying-qualities adherence 自适应飞行质量粘附的分析控制综合
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.521987
R.L. Barren, E. C. Larson, D. Ward, J. Stayman
{"title":"Analytical control synthesis for adaptive flying-qualities adherence","authors":"R.L. Barren, E. C. Larson, D. Ward, J. Stayman","doi":"10.1109/NAECON.1995.521987","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521987","url":null,"abstract":"An analytical procedure is described for synthesis and stability assessment of control systems for adaptive flying-qualities adherence with linear and nonlinear aircraft dynamics. This procedure directly incorporates desired low-order equivalent system (LOES) frequency and damping parameter values into the synthesis of control laws that provide optimal adherence to MIL-STD-1797A guidelines. The procedure is used to derive a longitudinal control law for a contemporary fighter aircraft. Simulation results are presented. It is believed that this approach offers improved flying qualities and may be suitable for mitigation of pilot induced oscillation problems because its closed-loop phase lag is essentially that of the LOES specification.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"80 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":"115767478","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}
引用次数: 0
Nonlinear optical crystal development at the USAF Wright Laboratory 美国空军赖特实验室的非线性光学晶体开发
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.522046
Frank Kenneth Hopkins, N. C. Fernelius, M. Ohmer, D. Zelmon, U. Ramabadran
{"title":"Nonlinear optical crystal development at the USAF Wright Laboratory","authors":"Frank Kenneth Hopkins, N. C. Fernelius, M. Ohmer, D. Zelmon, U. Ramabadran","doi":"10.1109/NAECON.1995.522046","DOIUrl":"https://doi.org/10.1109/NAECON.1995.522046","url":null,"abstract":"Wright laboratory materials directorate has been the primary DoD organization developing nonlinear optical (NLO) materials. This effort has resulted in numerous successes, especially in the development of new NLO crystals for use in laser sources. These crystals significantly enhance laser performance by making possible wavelength shifting and tunability and higher power. Technical progress has been made in developing several crystals which together cover the spectral range from middle ultraviolet to the far infrared. One crystal in particular, zinc germanium phosphide, has already demonstrated average power of 3.5 watts tunable over much of the mid-infrared atmospheric window. Significant improvements have also been made with extending the transparency range and laser-damage resistance of the KTP family of compounds.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"7 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":"115409697","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}
引用次数: 1
Range resolution enhancements for laser radar by phase modulation 相位调制增强激光雷达的距离分辨率
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.521925
L. T. Masters, M. Mark, B. Duncan
{"title":"Range resolution enhancements for laser radar by phase modulation","authors":"L. T. Masters, M. Mark, B. Duncan","doi":"10.1109/NAECON.1995.521925","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521925","url":null,"abstract":"A technique is developed to increase the range resolving ability of a long pulse laser radar system. Range resolution is the ability to distinguish between two or more closely spaced objects. The resolving ability of a pulsed ladar system is related to the effective correlation bandwidth of the pulse. Phase modulation of an outgoing pulse increases the effective correlation bandwidth of the pulse and enhances range resolution. Using a coherent, pulsed ladar system a pulse would be emitted from the system and the return signal detected. The return pulse is optically heterodyned and recorded. The recorded echo is then matched filtered to obtain an estimate of range. The estimate will be shown to have increased resolution with modulation.","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":"115971602","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}
引用次数: 4
Bayesian classification of ultrasound signals using wavelet coefficients 基于小波系数的超声信号贝叶斯分类
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.521945
E. Meyer, T. Tuthill
{"title":"Bayesian classification of ultrasound signals using wavelet coefficients","authors":"E. Meyer, T. Tuthill","doi":"10.1109/NAECON.1995.521945","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521945","url":null,"abstract":"Ultrasound is a common tool in the nondestructive evaluation of composite material integrity. Echoes from high frequency (5-10 MHz) sound waves vary with subsurface flaws and delaminations. To improve detection of internal defects in composite materials, a linear Bayes classification is applied to the wavelet transform coefficients of ultrasound scan lines. Using a Daubechies basis, wavelet transforms are taken of the ultrasound signals. A subset of the coefficients is then used as features for the classifier. A forward sequential feature selection (FSFS) algorithm was used to determine the optimal features. The training set was comprised of scanned signals from both damaged and undamaged samples. Performance statistics for classification of damaged materials were calculated using a separate set of test samples. Application of a shift-invariant wavelet transform removed some of the variability of the wavelet coefficients and improved the classification.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"20 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":"127228905","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}
引用次数: 11
J-MASS DIS interface using ports J-MASS DIS接口使用端口
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.522022
B. Beavin, T. Emrich, B. Bezdek
{"title":"J-MASS DIS interface using ports","authors":"B. Beavin, T. Emrich, B. Bezdek","doi":"10.1109/NAECON.1995.522022","DOIUrl":"https://doi.org/10.1109/NAECON.1995.522022","url":null,"abstract":"McDonnell Douglas Aerospace (MDA) developed a Distributed Interactive Simulation (DIS) interface to existing simulation models for use on the DIS network. Several of the key features of the interface include the use of ports, which provide an application independent input/output capability to any object, a Standardized Multiple Array Translating and Integrating Environment (SMARTIE) task which translates the communications from one interface to another and the DIS hardware/software interface which sends/receives the network data. All of these components were integrated with the Joint Modeling and Simulation System (J-MASS) and used for a test which included other digital/interactive/manned simulation units.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"33 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":"126882467","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}
引用次数: 7
Fractal detection of radar weak targets 雷达弱目标的分形检测
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.521927
H. Weidong, Yu Wenxian, L. Aimin
{"title":"Fractal detection of radar weak targets","authors":"H. Weidong, Yu Wenxian, L. Aimin","doi":"10.1109/NAECON.1995.521927","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521927","url":null,"abstract":"Radar weak target detection is a very difficult problem. The fractal information of radar targets may provide a new way to enhance the performance of conventional detection methods. A new approach to detect ship targets from sea clutter has been developed. The approach is based on the use of the fractal signature difference between the ship target and sea clutter, which is manifested in the backscattered radar signal from different objects. The fractal signatures are estimated by using the box counting method. In the case of a small number of sampling points, the computation of the fractal dimensions is considered.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"37 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":"126586972","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}
引用次数: 6
Polarization identification of high resolution range profiles 高分辨距离轮廓的偏振识别
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.521911
He Songhua, Zhang Hui, Hu Bo
{"title":"Polarization identification of high resolution range profiles","authors":"He Songhua, Zhang Hui, Hu Bo","doi":"10.1109/NAECON.1995.521911","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521911","url":null,"abstract":"In this paper, a novel effective polarization identification method is presented for vehicle sized ground target identification application. The method uses wide band FMCW orthogonal duel-polarization technology to obtain the degraded PSM of each scattering center in high resolution range profile. For different type of scattering center, different matching weight vectors of transmitting and receiving are used to process the PSM data of range profiles. Finally, power or amplitude output matched to different type of scattering center is obtained and used to identify target by means of the information about the kind of scattering centers the target is constructed. The method is more effective than those which use features obtained from only one polarization channel.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"55 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":"123152894","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}
引用次数: 0
Impulsive noise suppression using morphological operators 基于形态学算子的脉冲噪声抑制
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.521961
H. Weidong, Yu Wenxian, L. Aimin
{"title":"Impulsive noise suppression using morphological operators","authors":"H. Weidong, Yu Wenxian, L. Aimin","doi":"10.1109/NAECON.1995.521961","DOIUrl":"https://doi.org/10.1109/NAECON.1995.521961","url":null,"abstract":"A new approach to impulsive noise suppression found in desired signals is presented using mathematical morphological operators that incorporate the shape information of the signal in this paper. A brief introduction to these nonlinear signal processing operators, as well as a detailed description of the new algorithm, is presented. Experimental results show that the new algorithm has good performance in impulsive noise suppression.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"7 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":"124290953","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}
引用次数: 6
Module management architecture for embedded nonvolatile memory 嵌入式非易失性存储器的模块管理体系结构
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.522006
C.K. Cole, L. Viney
{"title":"Module management architecture for embedded nonvolatile memory","authors":"C.K. Cole, L. Viney","doi":"10.1109/NAECON.1995.522006","DOIUrl":"https://doi.org/10.1109/NAECON.1995.522006","url":null,"abstract":"This paper describes a novel memory management scheme used for two avionics projects currently in progress at the Georgia Tech Research Institute. The main focus will be the module management architecture (MMA) which provides the flexibility needed for the development and maintenance of large integrated systems that are heavily software dependent. This architecture allows code to be separated into task-specific executable modules which build and load independently while performing as one module. This scheme supports shorter development cycles and reduced time for future system enhancements and maintenance which is critical in reducing software cost.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"27 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":"114782853","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}
引用次数: 1
Measuring evidential consistence by a generalized relative entropy 用广义相对熵测量证据的一致性
Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995 Pub Date : 1995-05-22 DOI: 10.1109/NAECON.1995.522001
Yong Shaowei, Yu Wenxian, Guo Guirong
{"title":"Measuring evidential consistence by a generalized relative entropy","authors":"Yong Shaowei, Yu Wenxian, Guo Guirong","doi":"10.1109/NAECON.1995.522001","DOIUrl":"https://doi.org/10.1109/NAECON.1995.522001","url":null,"abstract":"The overall objective of this paper is to derive an algorithmic framework for measuring the evidential consensus of Dempster-Shafer theory. More specifically, our goal is to develop information theoretic criteria to quantitatively measure the quality of consensus generated by pooling evidences from multi-knowledge sources.","PeriodicalId":171918,"journal":{"name":"Proceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995","volume":"56 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":"124842338","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}
引用次数: 1
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