车载探地雷达探测技术研究中心

Research Center for Vehicle-mounted GPR Detecting Technique

       发展车载探地雷达检测技术是铁路运输安全,尤其是高铁运输安全的需要。车载探地雷达探测技术研究中心能够为我国高速铁路路基、隧道的定期“体检”提供必要的现代化装备。

       车载探地雷达探测技术研究中心的研究目标是在已有铁路车载探地雷达的基础上开发多种用途的车载探地雷达系统。由中频空气耦合天线,逐步研发高、中、低频系列空气耦合天线,形成由浅层探测到深层探测的全覆盖系列技术,满足高铁轨道结构检测和路基下伏不良地质灾害探测的需要,获取高铁线路下较大范围的地下信息。并且将车载探地雷达系统从铁路路基、隧道检测,拓宽到地铁、公路等其他交通领域。

●2006年研制出我国首台铁路提速区段路基状态检查车。

●2008年研制出铁路车载多通道高速扫描探地雷达系统以及数据采集软件和数据处理软件,测试速度达到175km/h。在同等条件下,该多通道高速扫描探地雷达系统的测试速度高于国外同类产品的测试速度。

●2012年研发出铁路隧道衬砌检测车载探地雷达系统,以80km/h~175km/h的速度检测。 


Development of train-mounted GPR techniques is the need of rail transportation safety, especially high-speed railway transportation safety. Research Center for Vehicle-mounted GPR Detecting Technique can provide necessary modern equipments for regular inspecting high-speed railway subgrade and tunnels.

The objective of Research Center is to develop multi-purpose vehicle-mounted GPR system on the basis of the existing train-mounted GPR, gradually developing a series of air-launched antennas with high, middle and low center frequency, forming full-covered detecting techniques from shallow detection to deep probing, which can meet the needs of high-speed rail track structure and subgrade inspection for unfavorable geologies and collect the underground information. In addition, vehicle-mounted GPR system will be widened to the subways, highways and other transportation areas from railway roadbed and tunnel inspection.

●In 2006, we developed China's first subgrade condition inspection car for railway speed-up section.

●In 2008, we developed the train-mounted multi-channel GPR system with high-speed scanning and data acquisition software as well as data processing software, whose testing speed can be reached 175km/h. Moreover, the detecting speed of this system is faster than that of the similar foreign products under the same conditions.

●In 2012, we developed the vehicle-mounted GPR system for detecting railway tunnel, whose detecting speed is 80km/h~175km/h.

Introduction

车载探地雷达系统研发 / R & D of Train-mounted GPR 


简介

系统研发工作照

Research & Development of System


车载探地雷达路基检测系统

Train-mounted GPR System for Subgrade Detection


车载探地雷达隧道检测系统

Train-mounted GPR System for Tunnel Detection

专利与国内奖项

Patent and Major Domestic Awards

获国际隧道与地下空间协会2015年年度技术创新奖

Winner of International Tunnelling and Underground Space Association Technical Innovation of the Year 

研发的车载探地雷达系统

Developed Train–mounted GPR System


高分辨率对地观测系统四川数据与应用中心

西南交通大学技术支撑中心 

Technical Support Center for Sichuan Provincial Remote Sensing Data Center

        依托高速铁路运营安全空间信息技术国家地方联合工程实验室,2015年7月13日西南交通大学成立了“高分辨对地观测系统四川数据应用中心西南交通大学技术支撑中心”。作为四川高分中心的主要共建单位之一,该中心着力建设区域高分技术成果应用服务支撑体系和专业平台,提供专业化的高分遥感数据处理技术支持与培训,为公共管理及企事业单位提供高分数据处理及应用解决方案。

In support of the State-Province Joint Engineering Laboratory in Spatial Information Technology for High-speed Railway Safety, the Technical Support Center for Sichuan Provincial Remote Sensing Data Center was established by SWJTU in July 2015. The center  focuses on (1) promoting data use of China High-Resolution Earth Observation System (CHEOS), (2) building the local supporting system and specialized platform for applications of CHEOS, (3) offering professional training for different applications of the relevant data use, and (4) providing applicable solutions based on our research results for CHEOS data processing and application services for the public administration and various enterprises.

简介

研究实例 / Research Examples


In order to improve the comprehensive capabilities of China's earth observation system, in 2010, the Chinese government approved to implement CHEOS, which will be completely activated by 2020, composited by:

◆Space-based System

◆Near Space and Airborne System

◆Ground System

◆Application System

CHEOS  Satellites

高精度影像自动配准

High-precision Automatic Image Matching

典型地物要素自动提取

Typical Geographical Features Extraction

高铁沿线安全隐患检测

Potential Hazard Detection Along the High-speed Railway

土地面积精确测量

Land Area Precise Measurement

植被健康状态检测

Vegetation Health Detection

Introduction

建 设 背 景 / Background

高速铁路运营安全空间信息技术国家地方联合工程实验室

State-Province Joint Engineering Laboratory in Spatial Information Technology for High-speed Railway Safety

高铁沿线虚拟地理环境研发中心

Research Center for Virtual Geographic Environment along High-Speed Railway

      依托高速铁路运营安全空间信息技术国家地方联合工程实验室,高铁沿线虚拟地理环境研发中心主要围绕高铁沿线虚拟地理环境建模与分析的基础理论和技术研究,针对高速铁路全生命周期(如设计、建设、运行、维护、仿真与分析)管理决策与科学实验需求,研制高铁沿线虚拟地理环境展示分析软件,为高速铁路运营安全空间信息技术相关研究成果的交流展示与模拟分析提供重要的理论与技术支撑。

       本中心已经研发了一套用于高速铁路沿线场景快速建模的虚拟环境建模系统,可应用于高速铁路沿线区域的虚拟地理环境建模与分析,包括仿真计算虚拟线路场景建模、在途专线实际线路场景建模及运行状态模拟分析。

       目前,本中心主要研究内容与开发任务包括如下几个方面:

       1. 基于规则的参数化高速铁路场景建模理论与方法

       2. 全生命周期高速铁路三维耦合建模与分析方法

       3. 轨道交通时空大数据共享与交换技术

       4. 高速沿线虚拟地理环境展示与分析平台研制

In support of the State-Province Joint Engineering Laboratory in Spatial Information Technology for High-speed Railway Safety, the Research Center for virtual geographic environment along high-speed railway concentrates on investigation of the theory and technologies of virtual geographic environment modelling and analysis. At different stages of the entire life cycle of high-speed railways (e.g. design, construction, operation, maintenance, simulation and analysis), a modelling software system is developed to automatically generate high-fidelity virtual high-speed railway scenes for supporting management decisions and scientific experiments. The research work can provide the important theoretical and technical support for interactive display and simulation analysis of geospatial information research achievements.

The research center has developed a virtual high-speed railway modelling system, which can be applied to modelling and analysis of virtual geographic environment along high-speed railway, including the virtual simulation line scene, the actual operating line data scene and the running state simulation analysis.

Currently, the primary research contents and tasks of this center are listed below: 

1. Rule-based parametric modeling method for virtual high-speed railway scenes

2. 3D coupling modeling and analysis methods for entire life cycle high-speed railways

3. Sharing and exchange technology for rail transportation spatio-temporal big data

4. Development of virtual simulation and display analysis platform

Introduction

简介

已有系统平台/Platform and System for Research

虚拟高速铁路建模系统

Virtual HSR scene modelling system

虚拟仿真快速建模

Rapid modelling for Virtual simulation

运行模拟与管理分析

Running simulation and management analysis

基元模型库

Basic-element model base


多维立体展示平台规划/Design sketch of Multidimensional display platform

雷达干涉技术研究中心

Research Center for Interferometric Synthetic Aperture Radar

        依托高速铁路运营安全空间信息技术国家地方联合工程实验室,雷达干涉技术研究中心主要围绕合成孔径雷达干涉(InSAR)的基础理论和技术开展深化研究,并研制相应的软硬件系统,针对火山运动、冰川漂移、山体滑坡、地壳运动及地震、城市沉降及长大线路工程形变(如高速铁路沉降)等方面开展监测与分析,为地质灾害防治(特别是高速铁路地质灾害)和减灾防灾提供重要的理论与技术支撑。

       本中心已开发出国内第一套基于永久散射体雷达干涉(PSI)的高速铁路沉降监测软硬件系统,可应用于高速铁路沿线区域的地面沉降监测与评估,包括沿线大范围的沉降漏斗探测、不均匀沉降监测以及线路状态评估。

       目前,本中心主要研究内容与开发任务包括如下几个方面:

       1. 卫星合成孔径雷达干涉及地形三维重建

       2. 永久散射体雷达干涉及区域形变反演

       3. 地基雷达干涉工程形变监测及软硬件装备研制

       4. 融合多卫星平台SAR数据的PS-DS雷达干涉测量装备研制

In support of the State-Province Joint Engineering Laboratory in Spatial Information Technology for High-speed Railway Safety, the Research Center for Interferometric Synthetic Aperture Radar concentrates on investigation of the theory and methodology of interferometric synthetic aperture radar (InSAR) and development of the package of relevant software and hardware. The center also carries out monitoring and analyzing of volcanic motion, glacier movement, landslides, crustal deformation and earthquake, urban subsidence and engineering deformation related to the large-scale linear infrastructures such as high-speed railway. The research work can provide the important theoretical and technical support for the geo-disaster prevention and treatment.

The research center has developed a package of software and hardware of persistent scatterer interferometry (PSI), which can be applied to monitoring and assessing the land subsidence along a high-speed railway, including monitoring of the large-area subsidence funnel and uneven land settlement, as well as the assessment of geometric status of tracks.

Currently, the primary research contents and tasks of this center are listed below: 

1. Satellite interferometric synthetic aperture radar and topographic mapping

2. Persistent scatterer interferometry and regional deformation inversion

3. Ground-based SAR interferometry and the relevant equipment development

4. PS-DS InSAR based on multi-satellite SAR data and the relevant equipment development

Introduction

简介

已有实验设备/Platform and Instruments for Research

研究实例/Research Examples

大型网格并行计算平台

Large Grid Parallel Computing Platform

地基合成孔径雷达干涉系统

Ground-Based InSAR System (IBIS-L)

PSInSAR 时序处理软件系统

PSInSAR Time Series Processing System

滑动断层反演模型

Slip Fault Inversion Model

三维形变提取方法

3D Ground Deformation Extraction

滑坡定量分析算法

Landslide Mass Analysis Algorithm


卫星导航定位技术研究中心

Research Center of Satellite Navigation and Positioning

       卫星导航定位技术研究中心以推进卫星导航定位、授时等相关领域的理论研究、新技术应用以及培养高素质专业人才为主要目标。研究中心拓展跟踪国内外导航卫星系统、终端及应用服务解决方案等方面的前沿技术,着力于攻克卫星导航定位应用关键技术,旨在形成和发展我国的导航定位新技术和新应用的探索与开发基地,建设具有国内一流水平的卫星导航定位技术的研发与创新平台。

Research center of satellite navigation and positioning (CSNP) aimed at the main targets of promoting applications of new technologies and cultivating professional and high quality talents in the field of satellite navigation and positioning, timing and related geosciences research. CSNP expand and track international and domestic forefront technology of satellite navigation system, concentrate on the key issues of satellite navigation and positioning, explore and develop new technologies and applications, to build a first-class level R&D and innovation platform for satellite navigation and positioning technology.

Introduction

简介

研究成果/Research results

增强参考站网络系统理论/GNSS augmentation theory

具有自主知识产权的网络RTK服务平台(ARSNET/VENUS软件)

Network RTK service platform (Virtual reference station ENhanced Utility System Software)

       研制了国内首套自主知识产权的增强参考站网络服务平台系统,支持北斗BDS、GPS、和GLONASS的多星座导航卫星系统的数据融合处理,提供厘米级导航与实时动态位置服务,已在我国CORS 网络应用中发挥关键作用。

The first domestic GNSS CORS network RTK system is developed with independent intellectual property rights. The system supports centimeter-level multi-constellations navigation and positioning for BDS、GPS and GLONASS system.

 precipitable water vapour inversion by GPS

GPS precipitable water vapour tomography

天顶对流层湿延迟时空分布

Zenith wet troposphere delay time and space distribution

电离层延迟空间相关误差(低纬度)电离层延迟空间相关误差(高纬度)

ionosphere delay error(Hong Kong, low latitude)  ionosphere delay error(Poland, high latitude)

GNSS水汽三维层析

Three-dimensional water vapor tomography with GNSS

北斗导航卫星系统与GPS性能对比研究

BDS and GPS performance comparison

GNSS RTK positioning availability in urban canyons region

GPS+GLONASS 0% fix 100% float   GPS+BDS+GLONASS 80% fix 20% float

北斗卫星和GPS卫星相位观测值精度对比

beidou satellite and GPS satellite phase observation precision comparison

广泛应用于高速铁路精密工程测量,如成渝高铁、贵广客运专线、沪昆高铁、成昆二线、川藏线、琼州海峡跨海工程、埃塞峨比亚铁路等重大工程测量

Widely applied in high-speed railway precise engineering surveying,such as Chengdu-chongqing high-speedrailway, Guizhou-guangzhou passenger dedicated railway, Shanghai-kunming high-speed railway, Chengdu-Kunming second-line, Qiongzhou strait crossing engineering, Ethiopian railway engineering survey.

四川盆地地壳运动监测

Sichuan basin crustal movement monitoring

       取得了利用高频GPS数据反演地震震中、震级、破裂过程等一系列成果。

A series of significant achievements have also been gained in inversion of the quake's epicentre, magnitude and failure process with using high frequency GPS data.

CRTN观测网同震位移

Coseismic displacement of CRTN sites

SCTQ站震时加速度频谱图

earthquake acceleration spectrum in SCTQ station

GNSS地震学研究/GNSS Seismological research

地震数据动态PPP结果

Kinematic PPP results of earthquake data

机载数据动态 PPP结果

Kinematic PPP results of airborn data

二阶电离层延迟

Second order ionospheric delay

三阶电离层延迟

Third order ionospheric delay

精密单点定位/Precision Point Positioning

       国际上首次利用GPS观测数据测定了亚毫米量级的固体地球潮汐形变,对深入认识地球深内部结构和改善大地测量精度等具有重要科学意义和应用价值,研究成果被美国地球物理学会选为研究亮点。

We used continuous GPS observations to determine the 3-D tidal displacement field accurate to the submillimeter level. The results will not only provide important constraints to the structure of Earth’s interior, but also refine tidal displacement models for global geodetic research. Our JGR paper entitled “The tidal displacement field at Earth’s surface determined using global GPS observations” has been selected as an AGU "Research Spotlight."

利用GPS观测技术研究地球潮汐形变/Measuring tidal displacementusing GPS

GNSS空间误差建模方法/GNSS spatial errors modeling

高精度GNSS远程无人值守自动变形监测与预警/High precision GNSS remote unattended deformation monitoring and warning system