LSSVM增强的受限环境列车定位精度优化方法

来源 :铁道学报 | 被引量 : 0次 | 上传用户：vincent_iong

【摘要】

：

GNSS/INS是目前较为理想的定位组合方式,但在GNSS信号较长时间缺失的情况下INS的定位误差会逐渐发散.为解决此问题提出一种针对卫星信号受限环境的LSSVM增强列车组合定位方法,并在青藏铁路线应用试验.试验结果表明:LSSVM增强列车组合定位方法能够有效提高组合导航系统在GNSS信号缺失情况下的定位精度,且相比于单独的INS,定位精度提高近80％,位置误差达到2 m之内,可以满足较高精度的列车定位需求,具有良好的工程应用价值.

【作者】

：

姜维余义志蔡伯根王剑

【机构】

：

北京交通大学电子信息工程学院,北京 100044;北京交通大学轨道交通控制与安全国家重点实验室,北京 100044;北京市电磁兼容与卫星导航工程技术研究中心,北京 100044

【出处】

：

铁道学报

【发表日期】

：

2022年1期

【关键词】

：

列车定位组合导航最小二乘支持向量机

下载到本地 , 更方便阅读

下载此文赞助VIP

声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架

论文部分内容阅读

其他文献

Functionalized Fiber-Based Strain Sensors:Pathway to Next-Generation Wearable Electronics

Wearable strain sensors are arousing increasing research inter-ests in recent years on account of their potentials in motion detection,per-sonal and public healthcare,future entertainment,man-machine interaction,artificial intelligence,and so forth.Much r

期刊

Wearable strain sensorFiber functionalizationWearabilityFlexible electronics

Red Blood Cell-Mimic Nanocatalyst Triggering Radical Storm to Augment Cancer Immunotherapy

Red blood cells(RBCs)have recently emerged as promosing candidates for cancer treatment in terms of relieving tumor hypoxia and inducing oxidative damage against cancer cells,but they are still far from satisfactory due to their limited oxygen transport a

期刊

Red blood cell mimicMetal-organic frameworkNanocatalystRadical stormCancer i

Bioinspired Adaptive,Elastic,and Conductive Graphene Structured Thin-Films Achieving High-Efficiency

Underwater exploration has been an attractive topic for understanding the very nature of the lakes and even deep oceans.In recent years,extensive efforts have been devoted to developing functional mate-rials and their integrated devices for underwater inf

期刊

Janus filmWater depth detectionVibration perception

High-Performance Blue Quasi-2D Perovskite Light-Emitting Diodes via Balanced Carrier Confinement and

Extensive investigation of the passivating agents has been performed to suppress the perovskite defects.However,very few attentions have been paid to rationally design the passivating agents for the balance of the carrier confinement and transfer in quasi

期刊

Blue perovskite LEDsCarrier confinement and transferDefect passivation2-Dimen

Cavity-Suppressing Electrode Integrated with Multi-Quantum Well Emitter:A Universal Approach Toward

A novel device structure for thermally activated delayed fluorescence(TADF)top emission organic light-emitting diodes(TEOLEDs)that improves the viewing angle characteristics and reduces the efficiency roll-off is presented.Furthermore,we describe the desi

期刊

Cavity suppressionMulti-quantum wellViewing angleEfficiency roll-offTop emis

A Better Zn-Ion Storage Device:Recent Progress for Zn-Ion Hybrid Supercapacitors

As a new generation of Zn-ion storage systems,Zn-ion hybrid super-capacitors(ZHSCs)garner tremendous interests recently from researchers due to the perfect integration of batteries and supercapacitors.ZHSCs have excellent inte-gration of high energy densi

期刊

Zn-ion storage systemsZn-ion hybrid supercapacitorsCarbon electrodesZinc anod

Architecture Design and Interface Engineering of Self-assembly VS4/rGO Heterostructures for Ultrathi

The employment of microwave absorbents is highly desirable to address the increasing threats of electromagnetic pollution.Importantly,devel-oping ultrathin absorbent is acknowledged as a linchpin in the design of light-weight and flexible electronic devic

期刊

Architecture designInterfaceSelf-assemblyMicrowave absorption

Porous and Ultra-Flexible Crosslinked MXene/Polyimide Composites for Multifunctional Electromagnetic

Lightweight,ultra-flexible,and robust crosslinked transition metal carbide(Ti3C2 MXene)coated polyimide(PI)(C-MXene@PI)porous composites are man-ufactured via a scalable dip-coating followed by chemical crosslinking approach.In addition to the hydrophobic

期刊

MXenePolyimideElectromagnetic interference shieldingHeaterSensor

考虑管状导体模型和轨中电流的钢轨电位计算

在直流牵引供电系统中普遍存在钢轨电位过高的问题,而现有钢轨电位计算仅考虑钢轨直流电阻模型,但是轨中电流包含大量1～50Hz和部分6倍频成份.将钢轨等效为管状导体模型,通过实测典型频率下的钢轨内阻抗,拟合确定P60钢轨等效管状导体参数;建立钢轨-地分布式参数模型,提出在多个牵引变电所、多车的复杂工况下考虑钢轨等效管状导体模型和轨中电流交流频谱的钢轨电位计算方法.通过实验室和工程案例验证了方法的准确性和有效性.计算单边供电下的钢轨纵向电压降落和牵引变电所钢轨电位,钢轨电位中6倍频成份对比轨中电流的6倍频成份增

期刊

交流内阻抗管状模型Bessel函数傅里叶变换

考虑灵活车票的高速铁路票额分配优化研究

为改善高速铁路收益,将部分高速铁路席位以灵活车票的形式出售.灵活车票价格较低,且在出售时只确定出行时段或备选车次集合,具体车次和席位延迟到发车前的某个时间兑现.设计两阶段售票组织方法,构建考虑灵活车票的两阶段高速铁路票额分配模型,采用CPLEX求解.利用模型最优解构造基于预订限制的预售控制策略,设计仿真算法,并选取京沪高速铁路部分列车进行仿真测试,分析灵活车票的收益特性.结果表明:相比单纯折扣销售,出售灵活车票使期望总收益增加1.57％,体现了供给灵活性的优越性;相比原有固定票价,新增灵活车票使得期望总收

期刊

铁路运输收益管理灵活车票票额分配

LSSVM增强的受限环境列车定位精度优化方法

其他学术论文