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| 1 | 复杂城市环境下的全球导航卫星系统/捷联惯性导航系统组合导航算法显示文摘针对复杂城市环境下,全球导航卫星系统(GNSS)信号出现频繁短暂失锁或拒止时,对GNSS/捷联惯性导航系统(SINS)组合导航系统的导航精度和鲁棒性影响较大问题,该文提出一种改进的因子图滤波方法。首先使用GNSS接收机内部参数构建信号误差鉴别函数,能实时估计出信号受多径干扰、遮挡等情况下的信号测量性能;同时利用载体运动约束条件构造零速修正因子,对GNSS拒止情况下的系统状态进行更新,避免系统导航性能极速下降。实验结果表明,改进的因子图方法相比经典因子图方法,在城市复杂环境下能提高定位精度63.50%和测速精度42.26%,同时也具有更低的存储量和计算复杂度,特别适用于城市车辆辅助驾驶导航设备中,对导航精度、硬件资源和实时性约束强的场景。 | 刘小汇 王怡晨 文超 李宗楠 | 2023 | 电子与信息学报2023，45，11： | 0 |
| 2 | Introduction to the Special Issue on Advances on Modeling and State Estimation for Industrial Processes显示文摘In the past few years,significant progress has been made in modeling and state estimation for industrial processes to improve control performance,reliable monitoring,quick and accurate fault detection,diagnosis,high product quality,fule and resource consumption,etc.However,with the fast development of information technology,numerous essential issues are faced in modeling and state estimation,which generates the new need for novel modeling and or state estimation methodologies and in-depth studies of them.Therefore,this special issue is dedicated to innovative modeling and state estimation from applicability,computational efficiency,and effectiveness. | Shunyi Zhao Xiaoli Luan Jinfeng Liu Ruomu Tan | 2023 | Computer Modeling in Engineering & Sciences2023，，4： | 0 |
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