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• OAI收割 [19]
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• 天文技术与方法 [1]

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浏览/检索结果: 共20条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Antenna Array Initial Condition Calibration Method for Integrated Optical Phased Array 期刊论文  OAI收割 Guangzi Xuebao/Acta Photonica Sinica, 2020, 卷号: 49, 期号: 7 作者:  Zhang, Qi-Hao;  Zhang, Ling-Xuan;  Li, Zhong-Yu;  Wu, Wei;  Wang, Guo-Xi   |  收藏  |  浏览/下载：37/0  |  提交时间：2020/09/03 Integrated chips   Numerical calculation   Phased array   Antenna patterns(antenna)   Phase calibration   Error analysis   Applications of differential barometric altimeter in ground cellular communication positioning network 期刊论文  OAI收割 IET SCIENCE MEASUREMENT & TECHNOLOGY, 2020, 卷号: 14, 期号: 3, 页码: 322-331 作者:  Hu, Zhengqun;  Zhang, Lirong;  Ji, Yuanfa   |  收藏  |  浏览/下载：25/0  |  提交时间：2021/12/06 cellular radio  height measurement  measurement errors  Global Positioning System  altimeters  barometers  least squares approximations  Kalman filters  surface fitting  spread spectrum communication  compensation  matrix algebra  GPS  signal message structure  power spectrum  spread spectrum ranging signal  fitting parameters  least-square solution  calibration compensation  system noise variance matrix  measurement noise variance matrix  multibase station correction  height information correction calculation  DBA system  systematic performance  differential barometric altimeter  ground cellular communication positioning network  measurement datum distribution  altitude positioning error  Global Positioning System  differential barometric altimetry system  systematic implementation level  continuous altitude measurement  precise altitude measurement  DBA systematic implementation aspect  two dimensional curved surface fitting function  sensor measurement correction  filtering effect  Kalman filter  measuring station  multiBSs  navigation fusion   Measurement error analysis of binocular stereo vision: effective guidelines for bionic eyes 期刊论文  OAI收割 IET SCIENCE MEASUREMENT & TECHNOLOGY, 2017, 卷号: 11, 期号: 7, 页码: 829-838 作者:  Wang, Qingbin;  Yin, Yingjie;  Zou, Wei;  Xu, De;  Yin YJ(尹英杰)   |  收藏  |  浏览/下载：43/0  |  提交时间：2018/01/04 Measurement Errors  Stereo Image Processing  Biocybernetics  Spatial Variables Measurement  Feature Extraction  Measurement Error Analysis  Binocular Stereo Vision  Bionic Eyes  Active Cameras  Rotation Angle Errors  Image Feature Extraction Errors  Depth Measurement  Calculation Formula  Angular Velocity   Error estimation in high-throughput density functional theory calculation for material property: elastic constants of cubic binary alloy case 期刊论文  iSwitch采集 Computational materials science, 2017, 卷号: 134, 页码: 190-200 作者:  Wang, Juan;  Yang, Xiaoyu;  Wang, Guisheng;  Ren, Jie;  Wang, Zongguo 收藏  |  浏览/下载：45/0  |  提交时间：2019/05/09 High-throughput dft calculation  Error estimation  Neural network  Cross validation  Support vector regression   Design of a stabilizing shell for KTX 期刊论文  OAI收割 FUSION ENGINEERING AND DESIGN, 2016, 卷号: 108, 页码: 28-34 作者:  You, Wei;  Li, Hong;  Tan, Mingsheng;  Lu, Mingjian;  Wu, Yanqi   |  收藏  |  浏览/下载：40/0  |  提交时间：2018/05/31 RFP  KTX  Stabilizing shell  Error field  Electromagnetic calculation  Eddy current   Design of a stabilizing shell for KTX 期刊论文  OAI收割 FUSION ENGINEERING AND DESIGN, 2016, 卷号: 108, 期号: 无, 页码: 28-34 作者:  You, Wei;  Li, Hong;  Tan, Mingsheng;  Lu, Mingjian;  Wu, Yanqi 收藏  |  浏览/下载：37/0  |  提交时间：2017/12/18 Rfp  Ktx  Stabilizing Shell  Error Field  Electromagnetic Calculation  Eddy Current   Error analysis of the micro temperature control system (EI CONFERENCE) 会议论文  OAI收割 2012 International Conference on Measurement, Instrumentation and Automation, ICMIA 2012, September 15, 2012 - September 16, 2012, Guangzhou, China Han Z.; Song K. 收藏  |  浏览/下载：48/0  |  提交时间：2013/03/25 In order to improve the measurement accuracy of optical detection instruments  temperature control circuits for narrow band-pass filters are given  and the error analysis is applied to temperature control circuits.The principle of a temperature measurement circuit is studied and the method of a driver circuit is described. A variety of influencing factors of temperature control accuracy are discussed. Moreover  for these error factors  improvement measures are given to reduce the nonlinear error. Finally  circuit parameter error is quantified to propose a calculation method for margin of error in a temperature control system. (2013) Trans Tech Publications  Switzerland.   Analysis on the influence of random vibration on MEMS gyro precision and error compensation (EI CONFERENCE) 会议论文  OAI收割 2011 3rd International Conference on Mechanical and Electronics Engineering, ICMEE 2011, September 23, 2011 - September 25, 2011, Hefei, China 作者:  Li M. 收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25 In order to improve its precision in dynamic environment  a Kalman filter was designed. Firstly  two sets of random drift data of MEMS gyro were respectively analysed  and it was found that the variance of random drift under random vibration significantly increased and its mean also changed. Then calculation results show that attitude angle error under random vibration is 2.6  while in the static test it is 0.25. Analysis on the characteristics of random drift was carried out  and it is found that it can be treated as stable  normally distributed random signal. Finally  a corresponding Kalman filter was designed. The results indicated that after filtering the variance of random drift is reduced to 0.0282  26.4% of pre-filtering and the attitude angle error is reduced to 1.5  57.7% of pre-filtering. The above method can effectively compensate for the attitude angle error of MEMS gyro caused by random vibration. This study can be a reference to the application of low-cost MEMS gyro in aircraft navigation. (2012) Trans Tech Publications  Switzerland.   Transferring error analysis of reflex light-tube in azimuth aiming system (EI CONFERENCE) 会议论文  OAI收割 2012 5th International Symposium on Computational Intelligence and Design, ISCID 2012, October 28, 2012 - October 29, 2012, Hangzhou, China 作者:  Zhao Y.;  Zhao Y.;  Zhao Y. 收藏  |  浏览/下载：31/0  |  提交时间：2013/03/25 According to the analysis of structural type and light transfer characteristics of azimuth aiming systems  the calculation formula for the transferring error based on the adjustment and installation error was established  and theoretical simulation was carried out  which provided a theoretical basis for the application of reflex light-tube in azimuth aiming systems. 2012 IEEE.   An appraisal method of dynamic interpolation error for high precision encoder (EI CONFERENCE) 会议论文  OAI收割 2011 International Conference on Electronics and Optoelectronics, ICEOE 2011, July 29, 2011 - July 31, 2011, Dalian, China 作者:  Wan Q.-H.;  Liu C.-X.;  Liu C.-X. 收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25 This paper introduces an appraisal method of the dynamic interpolation error for the high precision encoder (Lissajou pattern calculation method). When the encoder is rolling  two groups of fine photoelectric signals whose phase difference are /2 can be collected using data collected car. The shape and position deviation can be obtained through the comparison between Lissajou charts and the standard circle. Then dynamic interpolation error can be calculated out directly. This method is immune to the influence of encoder's speed and has no rigid demand to the test circumstances and test devices. The experimental results indicate that this method is feasible and important to the encoder's dynamic interpolation error checking. 2011 IEEE.