Pub Date : 2010-07-05DOI: 10.1109/ICSPS.2010.5555700
Tangdi Zhang, Caixiang Wang, Xiaowen Li
OFDM systems are very sensitive to frequency offset. This frequency offset results in inter-carrier interference (ICI) and, as a result, the performance of the OFDM system degrades drastically. In this paper, a blind adaptive method for joint frequency offset and channel estimation is proposed to reduce ICI effects and estimate frequency offset and channel. Adaptive technique is used to suppress these ICI effects. The channel impulse response (CIR) affected by frequency offset is tracked by a channel tracker in frequency domain. The result of the tracker is used to estimate the frequency offset and the channel. Then the frequency offset estimate is feedback to compensate the receipt signal. A blind estimation method is used, in consequence the efficiency and security of system are not reduced. The simulated results show that this scheme can reduce ICI effects significantly and the frequency and channel can be estimated effectually.
{"title":"Blind adaptive scheme for joint frequency offset and channel estimation in OFDM systems","authors":"Tangdi Zhang, Caixiang Wang, Xiaowen Li","doi":"10.1109/ICSPS.2010.5555700","DOIUrl":"https://doi.org/10.1109/ICSPS.2010.5555700","url":null,"abstract":"OFDM systems are very sensitive to frequency offset. This frequency offset results in inter-carrier interference (ICI) and, as a result, the performance of the OFDM system degrades drastically. In this paper, a blind adaptive method for joint frequency offset and channel estimation is proposed to reduce ICI effects and estimate frequency offset and channel. Adaptive technique is used to suppress these ICI effects. The channel impulse response (CIR) affected by frequency offset is tracked by a channel tracker in frequency domain. The result of the tracker is used to estimate the frequency offset and the channel. Then the frequency offset estimate is feedback to compensate the receipt signal. A blind estimation method is used, in consequence the efficiency and security of system are not reduced. The simulated results show that this scheme can reduce ICI effects significantly and the frequency and channel can be estimated effectually.","PeriodicalId":234084,"journal":{"name":"2010 2nd International Conference on Signal Processing Systems","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130669706","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 : 2010-07-05DOI: 10.1109/ICSPS.2010.5555474
Jing Tang, Yun'an Hu, Tao Lin, Yongxing Xie
More and more state variables in the case, the filter state variables, and identify operating modes means that the state collect and spend a lot of computing time, which lost control of real-time. This article will focus on one kind of high-frequency signal conversion equipment, work characteristics and work processes, using NI CompactRIO systems to set up equipment operating status monitoring system hardware, Requirements for equipment, the equipment failure, in the shortest possible time, alarm, we are monitoring the signals Huffman coding, in this based on pattern recognition, and compares relevant results. Compression algorithm used to retain equipment operation to the maximum extent of information processing while greatly reducing the time, the actual running results show that the method is feasible and has good application prospect.
{"title":"Electronic equipment real-time monitoring system design based on Huffman compression principle","authors":"Jing Tang, Yun'an Hu, Tao Lin, Yongxing Xie","doi":"10.1109/ICSPS.2010.5555474","DOIUrl":"https://doi.org/10.1109/ICSPS.2010.5555474","url":null,"abstract":"More and more state variables in the case, the filter state variables, and identify operating modes means that the state collect and spend a lot of computing time, which lost control of real-time. This article will focus on one kind of high-frequency signal conversion equipment, work characteristics and work processes, using NI CompactRIO systems to set up equipment operating status monitoring system hardware, Requirements for equipment, the equipment failure, in the shortest possible time, alarm, we are monitoring the signals Huffman coding, in this based on pattern recognition, and compares relevant results. Compression algorithm used to retain equipment operation to the maximum extent of information processing while greatly reducing the time, the actual running results show that the method is feasible and has good application prospect.","PeriodicalId":234084,"journal":{"name":"2010 2nd International Conference on Signal Processing Systems","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123689065","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 : 2010-07-05DOI: 10.1109/ICSPS.2010.5555473
Zhang Kai, W. Jianhua
The MOS resistor array infrared scene projector is the key component and advanced technology in hardware-in-the-loop simulation for infrared guidance weapons. Infrared scene simulation software is developed on the basis of OpenGL 2.0, a high performance visual simulation development platform, and its 3DMax module. Real-time infrared images are generated to drive infrared scene projector based on the MOS resistor array. Firstly the infrared imaging guidance simulation system structure, image generation software and infrared scene projector are studied and designed respectively. Secondly based on a lot of tests on 128×128 MOS resistor array, a novel non-uniformity correction algorithm for MOS resistor array is presented, and a linear look-up table is established. This simulator system has been applied to the research on the seeker of certain type of infrared missile, and ideal results have been obtained.
{"title":"Research on technology and design of MOS resistor array infrared scene projector","authors":"Zhang Kai, W. Jianhua","doi":"10.1109/ICSPS.2010.5555473","DOIUrl":"https://doi.org/10.1109/ICSPS.2010.5555473","url":null,"abstract":"The MOS resistor array infrared scene projector is the key component and advanced technology in hardware-in-the-loop simulation for infrared guidance weapons. Infrared scene simulation software is developed on the basis of OpenGL 2.0, a high performance visual simulation development platform, and its 3DMax module. Real-time infrared images are generated to drive infrared scene projector based on the MOS resistor array. Firstly the infrared imaging guidance simulation system structure, image generation software and infrared scene projector are studied and designed respectively. Secondly based on a lot of tests on 128×128 MOS resistor array, a novel non-uniformity correction algorithm for MOS resistor array is presented, and a linear look-up table is established. This simulator system has been applied to the research on the seeker of certain type of infrared missile, and ideal results have been obtained.","PeriodicalId":234084,"journal":{"name":"2010 2nd International Conference on Signal Processing Systems","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114556389","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 : 2010-07-05DOI: 10.1109/ICSPS.2010.5555606
Deng Yu, Wang Juan
In order to meet the needs of modern flood control, according to the current situations of monitoring in the Yellow River, three type's remote sensing manners are carried out, i.e. flood remote sensing automatic monitoring; drought remote sensing monitoring; unpiloted aircraft remote sensing monitoring. The three methods offer supplements for data collecting and processing in the Yellow River. As a result, which preliminary realize data signal acquisition and processing in complex condition, and provide theoretical support and technical parameters for improving flood, drought and ice disaster emergency monitoring techniques and conditions forecast.
{"title":"Application of remote sensing monitoring system in the yellow river","authors":"Deng Yu, Wang Juan","doi":"10.1109/ICSPS.2010.5555606","DOIUrl":"https://doi.org/10.1109/ICSPS.2010.5555606","url":null,"abstract":"In order to meet the needs of modern flood control, according to the current situations of monitoring in the Yellow River, three type's remote sensing manners are carried out, i.e. flood remote sensing automatic monitoring; drought remote sensing monitoring; unpiloted aircraft remote sensing monitoring. The three methods offer supplements for data collecting and processing in the Yellow River. As a result, which preliminary realize data signal acquisition and processing in complex condition, and provide theoretical support and technical parameters for improving flood, drought and ice disaster emergency monitoring techniques and conditions forecast.","PeriodicalId":234084,"journal":{"name":"2010 2nd International Conference on Signal Processing Systems","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114759480","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 : 2010-07-05DOI: 10.1109/ICSPS.2010.5555573
Zhang Yu-zhi
For the pumped storage machines started by static frequency converter (SFC), the mathematical model of multicircuits is established considering actual arrangement of the damper bars based on the multi-circuits theory of the electrical machines. On the basis of this mathematical model the process of static frequency converter starting were analyzed on simulation and analysis of the naturally operational phase. Meanwhile the rules of current, torque, rotational speed were given and several factors influencing starting were analyzed as well. The results show that, then the excitation current will rise quickly with the excitation control added, which can reach 4 times the rated value in 10 seconds, so it is necessary to control the excitation current by the excitation section in the inverter.
{"title":"Study of process of starting pumped storage machines by static frequency converter with field current controlled","authors":"Zhang Yu-zhi","doi":"10.1109/ICSPS.2010.5555573","DOIUrl":"https://doi.org/10.1109/ICSPS.2010.5555573","url":null,"abstract":"For the pumped storage machines started by static frequency converter (SFC), the mathematical model of multicircuits is established considering actual arrangement of the damper bars based on the multi-circuits theory of the electrical machines. On the basis of this mathematical model the process of static frequency converter starting were analyzed on simulation and analysis of the naturally operational phase. Meanwhile the rules of current, torque, rotational speed were given and several factors influencing starting were analyzed as well. The results show that, then the excitation current will rise quickly with the excitation control added, which can reach 4 times the rated value in 10 seconds, so it is necessary to control the excitation current by the excitation section in the inverter.","PeriodicalId":234084,"journal":{"name":"2010 2nd International Conference on Signal Processing Systems","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124308391","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 : 2010-07-05DOI: 10.1109/ICSPS.2010.5555244
Bao Li-yong, Zhao Dong-feng, Zhao Yi-fan
With the development of wireless network, a solution is urgently expected to meet the higher-quality QoS demands of multimedia traffics especially when the network is heavily loaded. This paper presents a new scheme of MAC protocol of wireless network, optimizing the services of the system in time of load change input via adjustment of the times of the access gated services. The scheme does not modify the current protocol infrastructure or add any overheads. The theoretical model is established with Markov chain and probability generating function. Mathematical analysis is made on the mean queue length and the mean cyclic time of the common queue and the key station. It turns out that the findings from theoretical analysis correspond well with those from simulated experiments and strengthen the flexibility and fairness of multimedia transmissions in wireless system.
{"title":"A dynamic scheme for multimedia support in IEEE802.11 wireless network","authors":"Bao Li-yong, Zhao Dong-feng, Zhao Yi-fan","doi":"10.1109/ICSPS.2010.5555244","DOIUrl":"https://doi.org/10.1109/ICSPS.2010.5555244","url":null,"abstract":"With the development of wireless network, a solution is urgently expected to meet the higher-quality QoS demands of multimedia traffics especially when the network is heavily loaded. This paper presents a new scheme of MAC protocol of wireless network, optimizing the services of the system in time of load change input via adjustment of the times of the access gated services. The scheme does not modify the current protocol infrastructure or add any overheads. The theoretical model is established with Markov chain and probability generating function. Mathematical analysis is made on the mean queue length and the mean cyclic time of the common queue and the key station. It turns out that the findings from theoretical analysis correspond well with those from simulated experiments and strengthen the flexibility and fairness of multimedia transmissions in wireless system.","PeriodicalId":234084,"journal":{"name":"2010 2nd International Conference on Signal Processing Systems","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124060756","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 : 2010-07-05DOI: 10.1109/ICSPS.2010.5555713
K. Han, Wanli Guo, X. Gao
In order to rapid communication between earth stations in satellite communications on the move (SOTM)system, the calculation methods of antenna's initial alignment which is one of the key technologies is studied. The earth's actual shape is ellipsoid and the spread of satellite signals is influenced by atmospheric refraction, so the azimuth angle and elevation angle are modified. Using these modified angles in initial antenna's pointing, system response is accelerated and good initial position is provided for the following tracking process.
{"title":"Discussion on the calculation methods for antenna's initial alignment in the SOTM","authors":"K. Han, Wanli Guo, X. Gao","doi":"10.1109/ICSPS.2010.5555713","DOIUrl":"https://doi.org/10.1109/ICSPS.2010.5555713","url":null,"abstract":"In order to rapid communication between earth stations in satellite communications on the move (SOTM)system, the calculation methods of antenna's initial alignment which is one of the key technologies is studied. The earth's actual shape is ellipsoid and the spread of satellite signals is influenced by atmospheric refraction, so the azimuth angle and elevation angle are modified. Using these modified angles in initial antenna's pointing, system response is accelerated and good initial position is provided for the following tracking process.","PeriodicalId":234084,"journal":{"name":"2010 2nd International Conference on Signal Processing Systems","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127607170","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 : 2010-07-05DOI: 10.1109/ICSPS.2010.5555734
Zhizhong. Zhao, Y. Liu, S. Yan, Z. Gao
Time Domain Neal-Smith (TDNS) criterion is an ideal quantization criterion for evaluation PIO susceptibility. The characteristic of pilot's self-adapting make it difficult to apply the criterion. In this paper, Sequential Quadratic Programming (SQP) algorithm is used for TDNS criterion, and the PIO susceptibility of an example aircraft is evaluated. The evaluation results indicate that it is practicable to evaluate PIO susceptibility by TDNS criterion with SQP algorithm.
{"title":"Pilot-induced oscillations (PIO) susceptibility evaluation approach based on sequential quadratic programming","authors":"Zhizhong. Zhao, Y. Liu, S. Yan, Z. Gao","doi":"10.1109/ICSPS.2010.5555734","DOIUrl":"https://doi.org/10.1109/ICSPS.2010.5555734","url":null,"abstract":"Time Domain Neal-Smith (TDNS) criterion is an ideal quantization criterion for evaluation PIO susceptibility. The characteristic of pilot's self-adapting make it difficult to apply the criterion. In this paper, Sequential Quadratic Programming (SQP) algorithm is used for TDNS criterion, and the PIO susceptibility of an example aircraft is evaluated. The evaluation results indicate that it is practicable to evaluate PIO susceptibility by TDNS criterion with SQP algorithm.","PeriodicalId":234084,"journal":{"name":"2010 2nd International Conference on Signal Processing Systems","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126377628","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 : 2010-07-05DOI: 10.1109/ICSPS.2010.5555226
Li Zhiwei, Zhang Min, Wang Jiechao
In this paper, a new interpolation algorithm for magnifying images based on the relative color difference of pixels (RCD) is presented, with its basic principle and implementation method being discussed in detail. Its comparison with the nearest neighbor interpolator and the bilinear interpolator, in terms of some objective evaluation criteria, are also given. The simulation result indicates that our method combines strong points of the other two algorithms.
{"title":"An image zooming technique based on the relative color difference of pixels","authors":"Li Zhiwei, Zhang Min, Wang Jiechao","doi":"10.1109/ICSPS.2010.5555226","DOIUrl":"https://doi.org/10.1109/ICSPS.2010.5555226","url":null,"abstract":"In this paper, a new interpolation algorithm for magnifying images based on the relative color difference of pixels (RCD) is presented, with its basic principle and implementation method being discussed in detail. Its comparison with the nearest neighbor interpolator and the bilinear interpolator, in terms of some objective evaluation criteria, are also given. The simulation result indicates that our method combines strong points of the other two algorithms.","PeriodicalId":234084,"journal":{"name":"2010 2nd International Conference on Signal Processing Systems","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128154738","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 : 2010-07-05DOI: 10.1109/ICSPS.2010.5555561
Lianghai Wu, Jun Gao, Zhiguo Fan, Zhao Xie
Many insects can derive navigation information from skylight polarization within patches of sky. The current methods simulating insect strategy take advantage of the skylight polarization through single numerical values rather than patterns. In this paper, we present a method to get navigation orientations by gradient vectors of skylight polarization maps even if the Sun is invisible or occluded by clouds. The maps are provided by a zenith centered imaging polarimeter with narrow field of view. Navigation orientations can be worked out by the combination of solar azimuths and calendar. We can gain additional insights into the navigation behavior of insects via the experiments.
{"title":"How to get navigation information within patches of sky as insects do?: A primitive orientation by skylight polarization maps","authors":"Lianghai Wu, Jun Gao, Zhiguo Fan, Zhao Xie","doi":"10.1109/ICSPS.2010.5555561","DOIUrl":"https://doi.org/10.1109/ICSPS.2010.5555561","url":null,"abstract":"Many insects can derive navigation information from skylight polarization within patches of sky. The current methods simulating insect strategy take advantage of the skylight polarization through single numerical values rather than patterns. In this paper, we present a method to get navigation orientations by gradient vectors of skylight polarization maps even if the Sun is invisible or occluded by clouds. The maps are provided by a zenith centered imaging polarimeter with narrow field of view. Navigation orientations can be worked out by the combination of solar azimuths and calendar. We can gain additional insights into the navigation behavior of insects via the experiments.","PeriodicalId":234084,"journal":{"name":"2010 2nd International Conference on Signal Processing Systems","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121608142","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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