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2013 Third International Conference on Instrumentation, Measurement, Computer, Communication and Control最新文献

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The Modeling of Complex Spectrum Environment for Aircraft Cooperative Engagement 飞机协同作战复杂频谱环境建模
Zhang Shuo, Ma Jifeng, Lin Jin-yong, Zhang Chunxia, Dong Wenjie, Z. Chunmei
The complex wireless spectrum environment of aircraft cooperative engagement is challenging for operational communicating. The unfamiliar spectrum environment is researched and a method of environment modeling based queuing theory is proposed in this paper. Our studies and simulations results demonstrate that the proposed spectrum environment model is correct and effective.
飞机协同作战复杂的无线频谱环境对作战通信提出了挑战。研究了陌生频谱环境,提出了一种基于排队论的环境建模方法。研究和仿真结果表明,所提出的频谱环境模型是正确有效的。
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引用次数: 0
Design of a Payload Data Handling System for Satellites 卫星有效载荷数据处理系统设计
Li Zhou, Junshe An
With the different and diverse requirements of the research, military, agricultural or scientific satellite missions, more and more organizations and institutes are participating in the satellite missions on the payload research and applications. The scientific and housekeeping data of the payloads is important for research and applications. The payload data handling system is interfacing the payloads to the onboard data handling system. Onboard systems can be standardized thus enabling a suitable and convenient platform for production and the third party, which will save the cost, time and personnel. Satellite subsystems are introduced first in this paper. Based on the requirements of the payload data handling, design of a universal payload data handling system is proposed. The functional modules, the electrical interfaces and protocols are described in detail. Finally, an implementation of the payload data handling is shown here. Standard bus interfaces and protocols like MIL-STD-1553B bus, RS485 bus, UART, RS422 and PCM (Pulse Coding Modulation), are adopted. The design of the payload data handling system in this paper, which is high performance, reliable and reusable, has common standard interfaces for the payloads, and can support multiple missions.
随着科研、军事、农业或科学卫星任务的不同和多样化需求,越来越多的组织和机构参与到卫星任务中对有效载荷的研究和应用。有效载荷的科学和管理数据对研究和应用非常重要。有效载荷数据处理系统将有效载荷连接到机载数据处理系统。机载系统可以标准化,从而为生产和第三方提供合适和方便的平台,这将节省成本、时间和人员。本文首先介绍了卫星子系统。根据载荷数据处理的要求,设计了一种通用的载荷数据处理系统。详细介绍了系统的功能模块、电接口和协议。最后,这里展示了有效负载数据处理的实现。采用MIL-STD-1553B总线、RS485总线、UART、RS422、PCM (Pulse Coding Modulation)等标准总线接口和协议。本文设计的有效载荷数据处理系统具有通用的有效载荷标准接口,能够支持多种任务,具有高性能、可靠性和可重用性。
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引用次数: 4
Information Acquisition with Compressed Sensing Multiuser Detection in Underwater Sensor Networks 水下传感器网络中压缩感知多用户检测的信息获取
Gongliang Liu, Wen-jing Kang
Underwater sensor network is a typically energy limited and bandwidth-limited system, the technical bottleneck of which is the asymmetry between the demand for large-scale and high-resolution information gathering and the limited network resource. In order to realize accurate information acquisition of the large-scale underwater sensor networks in an energy-efficient way, a compressed sensing (CS) multi-user detection (MUD) scheme is proposed and evaluated in this paper. The proposed scheme consists of three main components: (1) Data sampling with random selected nodes, (2) Quasi-orthogonal multiple access with MUD, such as CDMA and its particular case IDMA, (3) Information recovery. Exploiting the sparse property of the monitored objects, only a subset of sensors is required to measure and transmit to the monitoring center for accurate information reconstruction, reducing the energy consumption and prolonging the network lifetime significantly. Furthermore, by taking advantage of compressed sensing theory, this scheme has sufficient capability to resist packet error during multi-user detection. Simulation results with real ocean monitoring data validate the efficiency of the proposed scheme.
水下传感器网络是典型的能量有限、带宽有限的系统,其技术瓶颈是大规模、高分辨率信息采集的需求与有限的网络资源之间的不对称。为了高效节能地实现大规模水下传感器网络的准确信息采集,提出了一种压缩感知(CS)多用户检测(MUD)方案并进行了评价。该方案包括三个主要部分:(1)随机选择节点的数据采样;(2)基于MUD的准正交多址(如CDMA及其特殊情况下的IDMA);(3)信息恢复。利用被监控对象的稀疏特性,只需要一小部分传感器进行测量并传输到监控中心进行准确的信息重建,大大降低了能耗,延长了网络寿命。此外,该方案利用压缩感知理论,在多用户检测过程中具有足够的抗数据包错误能力。实际海洋监测数据的仿真结果验证了该方案的有效性。
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引用次数: 2
SINS/SRCNS Integrated Navigation Method Based on MME/KF Algorithm 基于MME/KF算法的SINS/SRCNS组合导航方法
Qian Hua-Ming, Sun Long
The positioning accuracy of traditional SINS/CNS integrated navigation system is low, because of the limitation of level benchmark. So strap-down inertial navigation system/stellar refraction celestial navigation system integrated navigation method (SINS/SRCNS) based on starlight refraction method is proposed. The model errors which are uncertain exist in measurement equation are estimated by Minimum Mode error Estimation (MME) and backward inference algorithm. Then the Kalman Filter is used to estimate system's states, this entire process formed the MME/KF algorithm. The simulation results indicated that, the proposed method is not only able to estimate the gyro drift exactly, but also to correct the navigation error caused by the accelerometer bias, and bate the divergence of speed and position error ulteriorly, therefore it is a practical method to improve the positioning accuracy.
传统的SINS/CNS组合导航系统受水平基准的限制,定位精度较低。为此,提出了基于星光折射法的捷联惯性导航系统/恒星折射天体导航系统组合导航方法(SINS/SRCNS)。采用最小模态误差估计(MME)和反向推理算法对测量方程中存在不确定的模型误差进行估计。然后利用卡尔曼滤波对系统状态进行估计,整个过程形成了MME/KF算法。仿真结果表明,该方法不仅能准确估计陀螺漂移,还能修正加速度计偏置引起的导航误差,同时抑制速度和位置误差的发散,是提高定位精度的一种实用方法。
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引用次数: 0
Research on Gait Measuring Method Based on PVDF Piezoelectric Sensors 基于PVDF压电传感器的步态测量方法研究
Cheng Li, Shu Min, Li Yiyang, Han Jinchuan, Li Haohua
The gait features can reflect people's pathological changes from one side and provide certain objective evaluation basis especially on lower limb bones, joints, muscles and ligaments. This paper puts forward a method of gait measuring based on PVDF piezoelectric sensors. By utilizing PVDF film which has the advantages of fast response, high sensitivity, good mechanical properties etc., the array of pressure sensors and signal conditioning circuit have been designed and produced. Study the human body in different conditions of her left foot force and pressure balance situation for detection of gait. Tested, this method can accurately in real time acquire people's foot dynamic pressure distribution information.
步态特征可以从一个侧面反映人的病理变化,提供一定的客观评价依据,尤其是下肢骨骼、关节、肌肉和韧带。提出了一种基于PVDF压电传感器的步态测量方法。利用PVDF薄膜具有响应快、灵敏度高、力学性能好等优点,设计制作了压力传感器阵列和信号调理电路。研究人体在不同条件下她的左脚受力和压力平衡情况,对步态进行检测。经测试,该方法能准确实时地获取人足部动态压力分布信息。
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引用次数: 1
Error Separation Method of Inductosyn 感应同步器误差分离方法
Chengjun Liu, Menglong Zhu
In order to implement the inductosyn error analysis with no higher precise angle measuring device, the error separation technique is studied. The data separation theory of the combination intercomparsion is analyzed and this method is applied to two inductosyns. Through intercomparsive measurement of two inductosyns, the inductosyn error datas are isolated by using the combination intercomparsion. The error data model of the inductosyn angle measuring system is established for error compensation. Through two inductosyns actual experiment, it proves the correctness of the error separation algorithm and error compensation model. Through reasonable error separation and compensation, high-accuracy inductosyn measurement can be achieved with no higher precise measuring equipment.
为了在没有高精度测角装置的情况下实现感应同步器误差分析,研究了误差分离技术。分析了组合互比较的数据分离原理,并将该方法应用于两个感应系统。通过对两个感应同步器的比对测量,采用组合比对隔离了感应同步器的误差数据。建立了感应同步器测角系统的误差数据模型,进行误差补偿。通过两个感应系统的实际实验,验证了误差分离算法和误差补偿模型的正确性。通过合理的误差分离和补偿,可以在没有更高精度的测量设备的情况下实现高精度的感应同步测量。
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引用次数: 2
The Development of the Three-Dimensional Force Sensing Pulse Sensor 三维力传感脉冲传感器的研制
Cheng Li, Wan Zhou, He Lin, You Xicun, Chen Zhuen
Pulse-taking is one of the very important skills of examining disease in traditional Chinese medical(TCM), but during the pulse-taking process, doctor's subjective factor effects a lot, It's hard to make pulse description to normalization, standardization, digitization, This thesis plan to design a three-dimensional force sensing pulse sensor which is convenient for checking the axial tensile force and radial pulse force at the same time, to perceive information of pulse, also to do some basic work to achieve pulse objectification and standardization of teaching, in this paper, through dynamic test and analysis and pulse measurement experiments to prove its use value, and confirmed with higher accuracy and practicality.
取脉是中医诊病的重要技能之一,但在取脉过程中,医生的主观因素影响很大,脉搏描述难以规范化、标准化、数字化。本文拟设计一种三维力感脉搏传感器,方便同时检测轴向拉力和径向脉力,感知脉搏信息。还要做一些基础工作来实现脉搏的客观化和规范化教学,本文通过动态测试分析和脉搏测量实验来证明其使用价值,并证实其具有较高的准确性和实用性。
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引用次数: 0
Quantitative Analysis of Environmental Disturbing Errors in Underwater Electromagnetic Field Measurement of Vessel 舰船水下电磁场测量中环境干扰误差的定量分析
Sun Jianye, Lv Jun-jun, Tian Ji, Cui Pei
The error is in-depth analyzed caused by environment in underwater electromagnetic field measurement of vessel in this paper. The method of error quantitative calculation have been proposed and verified in actual measurement caused by environment in underwater electromagnetic field measurement of vessel by increasing environmental monitoring units and the calculation method of environmental electromagnetic field spatial matching.
本文对舰船水下电磁场测量中环境因素引起的误差进行了深入分析。通过增加环境监测单元和环境电磁场空间匹配的计算方法,提出了船舶水下电磁场测量中环境引起的误差定量计算方法,并在实际测量中进行了验证。
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引用次数: 0
Modeling and Simulation of Space Coverage Performance of BDS/GPS BDS/GPS空间覆盖性能建模与仿真
Zhou Jun, Yang Jing
Because of the limitation caused by the number of visible BDS (BeiDou Navigation Satellite System) / GPS (Global Position System) satellites, the application of BDS/GPS on the spacecraft is different from the ground user. In this paper, the coverage performance model of BDS/GPS is established by taking the radiation angle of transmitting antenna, the elevation of receiver and the received signal strength into account. The simulation results reveal that BDS/GPS integrated navigation system is superior to BDS or GPS single system in all respects of coverage performance, especially in high earth orbit area. Consequently, adopting the BDS/GPS integrated navigation system in high earth orbit spacecraft's autonomous navigation that will be able to expand the field of space applications based on GNSS (Global Navigation Satellite System) significantly. In addition, the simulation conclusions have special reference value for the spacecraft's orbit design and application.
由于可见BDS(北斗导航卫星系统)/GPS(全球定位系统)卫星数量的限制,BDS/GPS在航天器上的应用与地面用户不同。本文考虑发射天线辐射角、接收机仰角和接收信号强度,建立了BDS/GPS的覆盖性能模型。仿真结果表明,BDS/GPS组合导航系统在各方面的覆盖性能均优于BDS或GPS单系统,特别是在高地球轨道区域。因此,在高地球轨道航天器自主导航中采用BDS/GPS组合导航系统,能够显著拓展基于全球卫星导航系统(GNSS)的空间应用领域。此外,仿真结论对航天器的轨道设计和应用具有特殊的参考价值。
{"title":"Modeling and Simulation of Space Coverage Performance of BDS/GPS","authors":"Zhou Jun, Yang Jing","doi":"10.1109/IMCCC.2013.295","DOIUrl":"https://doi.org/10.1109/IMCCC.2013.295","url":null,"abstract":"Because of the limitation caused by the number of visible BDS (BeiDou Navigation Satellite System) / GPS (Global Position System) satellites, the application of BDS/GPS on the spacecraft is different from the ground user. In this paper, the coverage performance model of BDS/GPS is established by taking the radiation angle of transmitting antenna, the elevation of receiver and the received signal strength into account. The simulation results reveal that BDS/GPS integrated navigation system is superior to BDS or GPS single system in all respects of coverage performance, especially in high earth orbit area. Consequently, adopting the BDS/GPS integrated navigation system in high earth orbit spacecraft's autonomous navigation that will be able to expand the field of space applications based on GNSS (Global Navigation Satellite System) significantly. In addition, the simulation conclusions have special reference value for the spacecraft's orbit design and application.","PeriodicalId":360796,"journal":{"name":"2013 Third International Conference on Instrumentation, Measurement, Computer, Communication and Control","volume":"29 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125694104","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
Wireless MWD Continuous Wave Signal Transfer Model and Simulation 无线随钻连续波信号传输模型与仿真
L. Jun, Yuan Feng
Through studying the transportation and vibration of drilling pressure fluctuation in drill stem, mathematical models between pressure flow and time distance are established, the differential equations corresponding to the above-mentioned variables are deduced and general solutions of differential equations are obtained. By analyzing the transferring mode of power transmission signals and describing the influence of drill stem on fluctuation through characteristic impedance and transmittance, the expression of frequency domain hydraulic head and frequency domain flow is given. Through model-simulation, pressure distribution of different signals along drill stem are calculated, which shows, in the process of transferring signals, the pressure wave of drill stem is in the form of standing waves. The influences of different signal terminal impedances and characteristic impedances on signal transfer are analyzed, simulation analysis of the signal of different frequency inside the drill stem is made, and the attenuations of different frequency inside the drill stem are obtained. Through calculating the natural frequency of drill stem, the methods for seeking out the apposite frequency of transmitted signal suitable for data transfer in the drilling stem, which theoretically supports the frequency selection of continuous-wave communication technology.
通过研究钻压波动在钻杆内的传递和振动,建立了压力流量与时间距离的数学模型,推导了上述变量所对应的微分方程,得到了微分方程的通解。通过分析动力传输信号的传递方式,通过特征阻抗和透射率描述钻杆对波动的影响,给出了频域水头和频域流量的表达式。通过模型仿真,计算了不同信号沿钻柱的压力分布,结果表明,在信号传递过程中,钻柱压力波呈驻波形式。分析了不同的信号终端阻抗和特征阻抗对信号传输的影响,对不同频率的信号在钻杆内进行了仿真分析,得到了钻杆内不同频率的衰减。通过计算钻杆的固有频率,寻找出适合于钻杆内数据传输的传输信号的合适频率的方法,为连续波通信技术的频率选择提供了理论支持。
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引用次数: 4
期刊
2013 Third International Conference on Instrumentation, Measurement, Computer, Communication and Control
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