地铁出行模式下城市空间格局的加法权距离场表达及应用  

Expression and Application of Additively Weighted Distance Field of Urban Spatial Pattern Under Metro Travel Mode

作　　者：胡海[1] 傅明娟 曹枫[2] HU Hai;FU Mingjuan;CAO Feng(School of Resources and Environmental Sciences,Wuhan University,Wuhan 430079,China;Communications and Information Center of the Department of Transportation of Hubei Province,Wuhan 430030,China)

机构地区：[1]武汉大学资源与环境科学学院,湖北武汉430079 [2]湖北省交通运输厅通信信息中心,湖北武汉430030

出　　处：《测绘地理信息》2024年第4期14-19,共6页Journal of Geomatics

基　　金：国家自然科学基金(41571395,41471328);国家重点研发计划(2017YFB0503500)

摘　　要：首先提出加法权距离、加法权距离场的概念并用其来表达因城市地铁形成的非连续空间格局;其次设计并实现了基于加法权距离的加法权距离场距离变换生成方法;而后以武汉市与合肥市为例,将三甲医院作为目标源点,生成对应城市研究区域的加法权距离场与分配场,进行地铁出行模式下出行时间精度的验证,并基于生成结果对城市出行圈及平均出行时间进行计算分析,讨论地铁出行模式下加法权距离场在城市空间分析、规划及寻址等方面的应用潜力。The spatial analysis tools used in traditional urban spatial pattern analysis include Euclidean distance analysis applicable to Euclidean space and network analysis applicable to road network space.The urban spatial pattern is discontinuous due to mode of transportation,but the classical spatial analysis tools are not applicable to this kind of space.First,the concepts of additively weighted distance and additively weighted distance field are put forward and used to express the discontinuous spatial pattern formed by urban rail transit.Then,taking Wuhan and Hefei as examples,the grade-A tertiary hospitals are selected as the target source points to generate the additively weighted distance field and allocation field of the corresponding urban study area,and verify the accuracy of the travel time under the rail transit mode.Based on the generated results,the urban travel circle and the average travel time are calculated and analyzed.The potential applications of additive weight distance field in urban spatial analysis,planning and addressing under metro travel mode are discussed as well.

关 键 词：加法权距离场 地铁出行 可达性 非连续空间 地图代数 

分 类 号：P208[天文地球—地图制图学与地理信息工程]