地点参考消息规范,引用消息规范

[中文适用范围]： LRMS 旨在为混合数据集环境内的位置参考标准化提供实用方法，即存在不止一种空间数据集且必须在这些数据集之间进行空间参考的情况。虽然局部地区的一些 ITS 应用可以通过拥有一个公共数据集来满足（可以通过多种方式实现位置参考），但许多 ITS 应用在国家或地区内将具有广泛的互操作性要求。例如，从美国加利福尼亚州开往佛罗里达州的车辆应该能够在整个行程中接收并理解交通信息或路线指令的空间参考。同样，从车辆到中心站点的信息集在任何城市都应该被理解，无论使用的数据集类型如何，无论它们是公共的还是私有的，或者位置如何在内部引用特定的数据集。 LRMS 可应用于涉及公路、铁路和水道上移动车辆的 ITS 系统。它还可以应用于从中心站点到非移动站点（例如信息亭、其他中心站点或行人）的位置参考。因此，LRMS 的最广泛范围是国家层面和整个 ITS 的多式联运空间数据集互操作性。鉴于 ITS 系统的多样性，预计各个 LRMS 提供的服务将为 ITS 应用子集生成位置参考标准，例如 ISP-车辆-ISP 或中心-中心。 [外文原描述]： The LRMS is intended to provide a practical approach to standardization for location referencing within a mixed data set environment, i.e., where more than one kind of spatial data set exists, and where spatial references between these data sets must be made. Although some ITS applications in local areas may be satisfied by having one common data set— for which location references may be implemented in any number of ways— many ITS applications will have broad interoperability requirements within the nation or a region. For example, a vehicle driven from California to Florida in the U.S. should be able to receive and understand spatial references for traffic information or routing instructions throughout the trip. Similarly, information sent from a vehicle to a central site should be understood in any city regardless of the kinds of data sets in use, whether they are public or private, or how locations are referenced internally to particular data sets.The LRMS can be applied to ITS systems involving mobile vehicles on roads, rails, and waterways. It can also be applied to location references to and from central sites to non-mobile sites such as kiosks, other central sites, or pedestrians. The broadest scope of the LRMS is therefore intermodal spatial data set interoperability at the national level and across all of ITS. Given the great variety of ITS systems, it is expected that individual LRMS profiles will generate location referencing StandardDetails for subsets of ITS applications, such as ISP→ Vehicle→ ISP, or center→ center.Cross Reference: FIPSPUB173,GIS-T92,GIS-T95,J2369