OGC标准学习手记（一）：OGC标准概述

OGC标准学习手记一OGC标准概述 OGC标准学习手记一OGC标准概述 粟卫民 http// http// 日期2007-11-26 保留所有版权。如需转载，请联系作者，并在醒目位置注明出处 OGC http//www.opengeospatial.org/ 是 The Open Geospatial Consortium, Inc. 开放空间信息协会的简称。它组织各成员单位制定了一系列地理信息共享方面 的标准，包括 SLD、WSC、WCS、GML、WMS 和 WFS 等。 Catalogue Services The OpenGIS Catalogue Services Specification defines common interfaces to discover, browse, and query metadata about data, services, and other potential resources・ Coordinate Transation Service Implementation Specification provides interfaces for general positioning, coordinate systems, and coordinate transations. Filter Encoding The OpenGIS Filter Encoding Implementation Specification defines an XML encoding for filter expressions. A filter expression constrains property values to create a subset of a group of objects. The goal, typically, is to operate on just those objects by, for example, rendering them in a different color or saving them to another at・ Geographic Objects The OpenGIS Geographic Objects GO Implementation Specification defines an open set of common, lightweight, language-independent abstractions for describing, managing, rendering, and manipulating geometric and geographic objects within an application programming environment. Geography Markup Language GML in JPEG 2000 for Geographic Imagery Encoding Grid Coverage Service The OpenGIS Grid Coverage Service Implementation Specification defines s that allow interoperability between software implementations by data vendors and software vendors providing grid raster analysis and processing capabilities・ Location Service OpenLS Sensor Model Language SensorML The primary focus of SensorML is to define processes and processing components associated with the measurement and postmeasurement transation of observations. The SensorML document also defines the SWE Common data types used throughout the SWE encodings and services・ Sensor Planning Service SPS Sensor Planning Service SPS defines an interface to task any of sensor or model. Using SPS, sensors can be reprogrammed or calibrated, sensor missions can be started or changed, simulation models cuted and controlled・ The feasibility of a tasking request can be checked and alternatives may be provided・ SPS implementations cover a wide range of application scenarios・ SPS is currently used to control assets such as simple web cams as well as satellite missions. Simple Feature Access - Part 1 Common Arch lecture Simple Feature Access - Part 2 SQL Option Simple Features for CORBA The three OpenGIS Simple Features Implementation Specifications one each for OLE/COM, CORBA, and SQL define interfaces that enable transparent access to geographic data held in heterogeneous processing systems on distributed computing plats.The Simple Feature Specification application programming interfaces [APIs] provide for publishing, storage, access, and simple operations on Simple