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Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993最新文献

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Voltage-mode-controlled PWM buck DC-DC converter with a proportional controller 电压模式控制PWM降压DC-DC转换器与比例控制器
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-05-24 DOI: 10.1109/NAECON.1993.290950
M. Kazimierczuk, N. Sathappan, D. Czarkowski
{"title":"Voltage-mode-controlled PWM buck DC-DC converter with a proportional controller","authors":"M. Kazimierczuk, N. Sathappan, D. Czarkowski","doi":"10.1109/NAECON.1993.290950","DOIUrl":"https://doi.org/10.1109/NAECON.1993.290950","url":null,"abstract":"Closed-loop small-signal characteristics are given for a voltage-mode-controlled PWM buck DC-DC converter with a proportional controller for continuous conduction mode (CCM). All parasitic resistances are taken into account. The following characteristics are presented at different values of the equivalent series resistance of the filter capacitor: control-to-output transfer functions, input-to-output transfer functions, and input and output impedances.<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132745894","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: 12
Development of practical logic for aircraft group recognition in a set of observations 在一组观测中发展飞机群识别的实用逻辑
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-05-24 DOI: 10.1109/NAECON.1993.290924
E. Mazer
{"title":"Development of practical logic for aircraft group recognition in a set of observations","authors":"E. Mazer","doi":"10.1109/NAECON.1993.290924","DOIUrl":"https://doi.org/10.1109/NAECON.1993.290924","url":null,"abstract":"The military application of target tracking is discussed. Formation flights of military aircrafts are considered (e.g. for attacks on distributed target areas and for penetration). The dense target situation occurs in the observation of multiple weapon systems. An efficient algorithm for formation (group) recognition in a set of observations is discussed. Results of simulation experiments for a radar tracking problem are presented which demonstrate the effects of the procedure.<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128918336","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
Polarization-encoded optical shadow-casting: an efficient implementation of carry-free arithmetic 偏振编码光学阴影投射:一种有效的无携带算法实现
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-05-24 DOI: 10.1109/NAECON.1993.290780
A. Cherri
{"title":"Polarization-encoded optical shadow-casting: an efficient implementation of carry-free arithmetic","authors":"A. Cherri","doi":"10.1109/NAECON.1993.290780","DOIUrl":"https://doi.org/10.1109/NAECON.1993.290780","url":null,"abstract":"The carry-free addition and borrow-free subtraction on the redundant binary number is adopted for the lensless polarization-encoded optical shadow-casting (POSC). First, a new recoding truth-table which has a symmetrical complemented relationship between the input minterms (entries that produce an output of 1 or -1) and their corresponding output bits is developed for the redundant signed-digit numbers. Then, the carry-free POSC adder/subtracter is designed by determining the encodings of the redundant bits for generating the sum/difference output bit and the source LEDs pattern. Two design methods are presented: direct implementation and truth-table partitioning. It is shown that the design of the POSC carry-free adder/subtracter has much less pixel subcell (six) in the coding pattern of the POSC system than the previously designed carry-free adder (twelve).<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124502064","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
An advanced digital signal processor for the HRR polarimetric MMW active guidance radar 一种用于HRR极化毫米波主动制导雷达的先进数字信号处理器
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-05-24 DOI: 10.1109/NAECON.1993.290943
Yong Rin, Benchao Sie, L. Yongtan
{"title":"An advanced digital signal processor for the HRR polarimetric MMW active guidance radar","authors":"Yong Rin, Benchao Sie, L. Yongtan","doi":"10.1109/NAECON.1993.290943","DOIUrl":"https://doi.org/10.1109/NAECON.1993.290943","url":null,"abstract":"Polarimetric CFAR detection procedures are first outlined. An advanced digital signal processor used for MMW polarimetric HRR active precision guiding radar is configured that involves a preamplifier and filter, a spectral analyzer and a DSP-based polarimetric detector/discriminator to seek and track ground targets in surface clutter. A fuzzy relative optimal state (FROS) of a processor is conceptualized concerning the compromise of processor parameters selection based on the radar resolution, dwell time, data rate, and the hardware complexity.<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124605540","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
Advanced Cruise Missile guidance system description 先进巡航导弹制导系统描述
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-05-24 DOI: 10.1109/NAECON.1993.290941
S. Hicks
{"title":"Advanced Cruise Missile guidance system description","authors":"S. Hicks","doi":"10.1109/NAECON.1993.290941","DOIUrl":"https://doi.org/10.1109/NAECON.1993.290941","url":null,"abstract":"This paper provides a functional description of the navigation and guidance system in the Advanced Cruise Missile (ACM), one of the Air Force's newest stealth missiles. It also discusses some of the areas of improvement over the Air Launched Cruise Missile (ALCM). The Kalman Filter design accommodates velocity updates, including lateral velocities, and a nominal number of position updates from terrain correlation matching (TERCOM) to achieve a high accuracy, long range mission.<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129485208","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: 13
Deterministic neuron: a model for faster learning 确定性神经元:一个更快学习的模型
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-05-24 DOI: 10.1109/NAECON.1993.290833
F. Ahmed, A. Awwal
{"title":"Deterministic neuron: a model for faster learning","authors":"F. Ahmed, A. Awwal","doi":"10.1109/NAECON.1993.290833","DOIUrl":"https://doi.org/10.1109/NAECON.1993.290833","url":null,"abstract":"Training in most neural network architectures are currently being done by updating the weights of the network in a way to reduce some error measures. The well-known backpropagation algorithm and some other training algorithms use this approach. Obviously, this has been very successful in mimicking the way the biological neurons do their function. But the problem of slow learning and getting trapped in local minimas of error function domain deserve serious investigation. Various models are proposed with various levels of success to get rid of these two problems. In this work, we propose a deterministic model of the neuron, that guarantees faster learning by modifying the nonlinearity associated with each neuron. Only one such neuron is required to solve the generalized N-bit parity problem.<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128184580","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
A wide bandwidth digital quadrature demodulator for electronic warfare receivers 一种用于电子战接收机的宽带数字正交解调器
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-05-24 DOI: 10.1109/NAECON.1993.290935
R. Inkol, R. Saper, G. Zhang
{"title":"A wide bandwidth digital quadrature demodulator for electronic warfare receivers","authors":"R. Inkol, R. Saper, G. Zhang","doi":"10.1109/NAECON.1993.290935","DOIUrl":"https://doi.org/10.1109/NAECON.1993.290935","url":null,"abstract":"An efficient algorithm for real-time digital quadrature demodulation is presented. It can be implemented with a pair of quadrature highpass finite impulse response filters and decimators. The filters are derived from a quarter-band lowpass filter prototype through the use of appropriate transformations. The implementation of the algorithm using VLSI technology is discussed.<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128963114","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
Standard compass/attitude and heading reference system (C/AHRS) utilizing fiber optic gyroscopes 使用光纤陀螺仪的标准罗经/姿态和航向参考系统(C/AHRS)
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-05-24 DOI: 10.1109/NAECON.1993.290942
John Washburn, J. Galloway, H. Kent
{"title":"Standard compass/attitude and heading reference system (C/AHRS) utilizing fiber optic gyroscopes","authors":"John Washburn, J. Galloway, H. Kent","doi":"10.1109/NAECON.1993.290942","DOIUrl":"https://doi.org/10.1109/NAECON.1993.290942","url":null,"abstract":"The requirement for replacement systems for in-service aircraft with aging compass and attitude heading reference systems was the basis for a joint U.S. Air Force/U.S. Navy program to develop, test, and acquire a standard low life-cycle-cost composite system. A single award was made to Smiths Industries in June 1991 to develop the C/AHRS, build fourteen prototypes, and support an extensive test program. The design approach chosen by Smiths included the use of fiber optic gyroscopes. In order to achieve the high reliability required for this replacement system, an Avionics Integrity Program (AVIP) has been implemented which includes extensive in-depth studies to determine actual environments which drive the design process. This paper presents a summary of the C/AHRS requirements and design approach.<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132489520","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: 3
The C-17 dual-channel air data computer C-17双通道空气数据计算机
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-05-24 DOI: 10.1109/NAECON.1993.290844
P. Prinke
{"title":"The C-17 dual-channel air data computer","authors":"P. Prinke","doi":"10.1109/NAECON.1993.290844","DOIUrl":"https://doi.org/10.1109/NAECON.1993.290844","url":null,"abstract":"The C-17 Air Data Computer (ADC) has been developed by Honeywell Inc., Defense Avionics Systems Division, Albuquerque, New Mexico, under subcontract to McDonnell Douglas Aircraft, Long Beach, California, for use as the primary air data system on the U.S. Air Force C-17A military air transport. Each C-17 ADC Line Replaceable Unit (LRU) provides the equivalent function of two independent ADC channels. A single channel in the ADC features a self contained 1750 SEAFAC certified processor capable of providing air data related flight information via two MIL-STD-1553B remote terminals. There are two ADCs per aircraft shipset, thus providing an equivalent of four independent ADC channels per airplane. The secondary source of input data to the ADC is the 1553B bus. This interface supplies the ADC with unique flight characteristic data which is utilized by the ADC processor to correct altitude and airspeed data for pressure source errors.<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132257450","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
Simplified performance estimation of FSK/PSK hybrid signaling radar systems FSK/PSK混合信号雷达系统的简化性能估计
Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993 Pub Date : 1993-05-24 DOI: 10.1109/NAECON.1993.290925
B. J. Skinner, J. P. Donohoe, F. Ingels
{"title":"Simplified performance estimation of FSK/PSK hybrid signaling radar systems","authors":"B. J. Skinner, J. P. Donohoe, F. Ingels","doi":"10.1109/NAECON.1993.290925","DOIUrl":"https://doi.org/10.1109/NAECON.1993.290925","url":null,"abstract":"FSK/PSK signaling radar systems make use of a pulse compression signaling scheme formed by a combination of two common modulation techniques: frequency shift keying (FSK) and phase shift keying (PSK). This technique of radar signaling can achieve high time-bandwidth products-the primary measure of radar signal processing gain. Since the ability of most radars to detect moving targets against a ground clutter background is often phase noise limited, if is feared that the phase noise of the oscillators required for synthesis of the signal component frequencies could result in a performance degradation that outweighs the performance improvement obtained from the complex signaling scheme. In this paper, the effects of phase noise on the digital Doppler processor of an FSK/PSK signaling radar system are analyzed in a very general fashion. These results can be applied to other types of radar systems that use other forms of pulse compression and also to systems that use no pulse compression. The analysis is based on a complete radar system stochastic process model and simplifying assumptions are made based on practical component characteristics. The paper concludes with a helpful example.<<ETX>>","PeriodicalId":183796,"journal":{"name":"Proceedings of the IEEE 1993 National Aerospace and Electronics Conference-NAECON 1993","volume":"51 Pt 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126237150","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: 5
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