{"title":"Non-binary LDPC Codes for Rotor Occlusion in Helicopter Communication","authors":"Zhang Fu-xing, Xu Sheng-wang","doi":"10.1109/IMCCC.2015.50","DOIUrl":"https://doi.org/10.1109/IMCCC.2015.50","url":null,"abstract":"Satellite communication is important in helicopter communication, it can effectively improve the communication range and communication capacity. Controlled by the installation conditions, satellite antenna will be influenced by helicopter rotor periodically, signal transmission will suffer periodic continuous fading and occur periodic burst errors. Non-binary LDPC code is a kind of advanced channel coding scheme, it has strong ability of error correcting. It can convert continuous bit burst errors into less M-ary symbol errors, so it has a good ability to anti burst error. In this paper, simulation of using non-binary LDPC codes to resist the burst errors in the helicopter satellite communication is placed, the results show that non-binary LDPC codes can correct the burst error well which are caused by helicopter rotors. In addition, this paper also discusses a method of decoding initialization in which zero is set in positions under covered, the results demonstrate that the way to set zero can obtain better decoding performance advantages, the performance improvement is about 0.2dB.","PeriodicalId":438549,"journal":{"name":"2015 Fifth International Conference on Instrumentation and Measurement, Computer, Communication and Control (IMCCC)","volume":"405 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133613959","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":"SINS In-Motion Alignment for Initial Attitude Uncertainty","authors":"Nie Qi, Z. Pengfei","doi":"10.1109/IMCCC.2015.49","DOIUrl":"https://doi.org/10.1109/IMCCC.2015.49","url":null,"abstract":"This paper presents a novel alignment method based on wander frame for SINS (strap down inertial navigation system) whose initial attitude information is completely unknown. During the coarse mode, the cosine and sine of the wander angle is defined as the filter states, and modeled as the velocity/position error in the geographic frame. Azimuth error state in the fine mode of the filter is defined as wander angle error to provide continuous estimation of navigation states. For the wander azimuth navigation frame, the initial wander azimuth error is satisfied all arbitrary value from 0 to 360 degree. The design can solve the SINS alignment problem while the initial attitude information cannot be obtained from outside source. Compared with conventional algorithm, this approach is more robust and versatility for the fast reaction application.","PeriodicalId":438549,"journal":{"name":"2015 Fifth International Conference on Instrumentation and Measurement, Computer, Communication and Control (IMCCC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134633325","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":"Status Quo and Developing Trend of MEMS-Gyroscope Technology","authors":"Xiaolong Li, Wei Xiao, Yu Fei","doi":"10.1109/IMCCC.2015.159","DOIUrl":"https://doi.org/10.1109/IMCCC.2015.159","url":null,"abstract":"With the rapid development of MEMS technology, MEMS-gyroscopes with its perfect characteristics of small size, light weight, low cost and environmental adaptability are getting a wild rang application including both civilian and military fields. At first, this paper introduces how the MEMS-gyroscope works from the basic mechanics, the internal structure and performance analysis of basic characteristics. And then the paper presents and analyzes the current status of the development of MEMS gyroscope technology. And based three different market conditions and working environments, the applications of MEMS gyroscopes are discussed in this paper. Finally, the developing trends of MEMS gyroscopes are analyzed from the technological and market perspectives.","PeriodicalId":438549,"journal":{"name":"2015 Fifth International Conference on Instrumentation and Measurement, Computer, Communication and Control (IMCCC)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133818680","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":"Research of Selection Algorithm in Vehicles Mobile Networks Based on 3G/WiMAX","authors":"Jingwei Dong, Kui Jin","doi":"10.1109/IMCCC.2015.338","DOIUrl":"https://doi.org/10.1109/IMCCC.2015.338","url":null,"abstract":"For the limitation of the architecture in traditional vehicle communication networks, a new architecture of the fusion heterogeneous network based on 3G/WiMAX is designed. In order to roam in 3G/WiMAX networks seamlessly, a fuzzy neural network access selection algorithm optimized on the basis of ant colony optimization (ACO) algorithm is put forward. The proposed algorithm takes radio signal strength, terminal moving speed and network bandwidth into consideration to process fuzzy neural network processing module. The specialty of the algorithm is using ACO to optimize and adjust the parameters of membership function. The simulation results show that the proposed algorithm can decrease the packet dropping probability, reduce the happening times of Ping-Pong effect and decrease the blocking probability on the consideration of guaranteeing the QoS for users.","PeriodicalId":438549,"journal":{"name":"2015 Fifth International Conference on Instrumentation and Measurement, Computer, Communication and Control (IMCCC)","volume":"67 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114011267","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":"Hybrid Damping Strategy for Single-Phase Grid-Connected Photovoltaic Inverter under the Control of PDFI","authors":"Yang Qiuxia, Li Kun, Wang Hu","doi":"10.1109/IMCCC.2015.345","DOIUrl":"https://doi.org/10.1109/IMCCC.2015.345","url":null,"abstract":"One of the key operation of the grid-connected PV system is a fast and accurate control of the grid current, but the traditional proportional integral (PI) control of the grid current can not achieve this important goal because of its steady-state error. In addition, after the PV system is incorporated into the grid, the influence caused by grid inductance has a non-negligible effect on the damping strategy of the LCL filter. In order to solve the problems mentioned above, a hybrid damping strategy for single-phase PV grid-connected inverter under the control of PDFI is presented in this paper. This strategy introduces a proportional delay feedback integral (PDFI) control, which is based on the original PI control and can realize the control of the grid current without steady-state error due to the simple feedback circuit. Meanwhile, taking damping coefficient as object, the hybrid damping strategy has a good improvement effect on the grid inductance. The results of the theoretical analysis and Mat lab simulation both show that, under this control strategy, the system can run stably, the grid current can be controlled accurately, and the damping strategy of the LCL filter has good adaptability to the grid inductance.","PeriodicalId":438549,"journal":{"name":"2015 Fifth International Conference on Instrumentation and Measurement, Computer, Communication and Control (IMCCC)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115572147","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":"Research on Lactose Concentration Detection Device Based on the Optical Rotation Method","authors":"Zhen Zhou, L. Liang, Kangkang Guo, Zehong Lv","doi":"10.1109/IMCCC.2015.245","DOIUrl":"https://doi.org/10.1109/IMCCC.2015.245","url":null,"abstract":"At present, the process of detecting the sample of the lactose detection method is very complicated due to the strict operation condition, long operation time and expensive equipment. Using the nature of lactose that can rotate the plane of polarization of plane-polarized, a lactose concentration detecting device is designed. The device consists of an experiment platform, a photoelectric receiving and converting module, a data processing module, and a LCD module. Laser, polarizer, detector tube, analyzer and photocell are placed on the experiment platform. The test results show that the performance of the detection device is stable and the error is less than 10% through multiple measure on different solutions at different times. The advantage of the device is mainly manifested in its low cost, compact structure, light weight, small volume, fast response speed, and the convenient operation.","PeriodicalId":438549,"journal":{"name":"2015 Fifth International Conference on Instrumentation and Measurement, Computer, Communication and Control (IMCCC)","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114434597","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 Synthetic Frequency Estimation Method of Sinusoid Based on Interpolated FFT","authors":"Lei Fan, Guoqing Qi","doi":"10.1109/IMCCC.2015.366","DOIUrl":"https://doi.org/10.1109/IMCCC.2015.366","url":null,"abstract":"A new frequency estimator of sinusoid based on interpolated FFT amplitudes is proposed. The coarse frequency estimation is made by the position of the maximum DFT amplitude. Then the fine estimation is made by utilizing the amplitudes of two DFT coefficients. Simulation results show that the root mean square errors of frequency estimation of the proposed estimator and Fang's estimator are close to the Cramer-Rao Lower Bound when the signal frequency locates in different regions between two neighboring FFT spectral lines. To further improve the estimator's performance, a synthetic frequency estimator is constructed. Simulation results show that the root mean square error of synthetic estimator is close to the Cramer-Rao Lower Bound when the signal frequency locates anywhere between two neighboring FFT spectral lines. The synthetic method has low computation complexity and outperforms the existing estimators.","PeriodicalId":438549,"journal":{"name":"2015 Fifth International Conference on Instrumentation and Measurement, Computer, Communication and Control (IMCCC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115884708","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":"Research on Metal-Particle Sizing in Particle Impact Noise Detection System","authors":"Shujuan Wang, Chao Li, Guotao Wang, G. Zhai","doi":"10.1109/IMCCC.2015.333","DOIUrl":"https://doi.org/10.1109/IMCCC.2015.333","url":null,"abstract":"The loose particle, especially metal particle left inside the sealed electronic devices brings great harm to reliability of the whole system. The Particle Impact Noise Detection (PIND) is an effect way to measure the size of loose particles. In this paper, a model of metal-particle sizing has been presented. Experimental results show that the curve tendency of the model theoretical values is very close to that of the measured values. Thus the result of particle sizing can be given to some extent with the help of this method.","PeriodicalId":438549,"journal":{"name":"2015 Fifth International Conference on Instrumentation and Measurement, Computer, Communication and Control (IMCCC)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116274261","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":"Research on the Method of Smart Noise Jamming on Pulse Radar","authors":"Honglian Hao, D. Zeng, Ping Ge","doi":"10.1109/IMCCC.2015.287","DOIUrl":"https://doi.org/10.1109/IMCCC.2015.287","url":null,"abstract":"Smart noise jamming of convolution modulation may get all or part of the pulse compression processing gain and raise the jamming power efficiency. It is proved that this kin of jamming has not only the blanketing effect of covering targets efficiently but also the deception effect of forming false targets intensively. In this paper, a new method of jamming on pulse radar is proposed based on the double effects of smart noise jamming. This new method combines conventional noise jamming with smart noise jamming. It eliminates processing gain of conventional nose jamming on pulse radar and reduces the probability of the threshold detection. Theoretical analysis, simulation and experiment results verify the validity and the effectiveness of the proposed jamming.","PeriodicalId":438549,"journal":{"name":"2015 Fifth International Conference on Instrumentation and Measurement, Computer, Communication and Control (IMCCC)","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123470331","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":"Research on Performance of Visible Light Communication Based on LDPC Code","authors":"Yishuo Chen, Yanyong Su, Dong Xue, Chao Dong","doi":"10.1109/IMCCC.2015.310","DOIUrl":"https://doi.org/10.1109/IMCCC.2015.310","url":null,"abstract":"Visible light communication (VLC) technology is a new high-speed wireless access technology, finding a appropriate channel coding scheme is one of its main research directions. This paper proposed a new scheme to construct quasi-cyclic low-density parity-check (QC-LDPC) code. It is proved by the simulation result that the QC-LDPC code can help to improve the BER performance of the system because there is no girth four in its parity-check matrix. Then this paper studied the decoding algorithms of QC-LDPC code and proposed an improved decoding algorithm which can decrease the complexity of decoding process by introducing the multiplicative factor. The simulation results show that the QC-LDPC code is a suitable channel code for VLC, and the improved MS decoding algorithm reduces the complexity to a large extent on the basis of ensuring the BER performance of the VLC system.","PeriodicalId":438549,"journal":{"name":"2015 Fifth International Conference on Instrumentation and Measurement, Computer, Communication and Control (IMCCC)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124808483","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}