ISO 19141:2008 地理信息 移动特征范式

标准编号：ISO 19141:2008

中文名称：地理信息 移动特征范式

英文名称：Geographic information — Schema for moving features

发布日期：2008-06

标准范围

ISO 19141:2008定义了一种描述作为刚体移动的特征的几何形状的方法。这种运动具有以下特征。特征在由ISO 19107中指定的空间对象组成的任何域内移动。特征可以沿着规划的路线移动，但是可以偏离规划的路线。运动可能受到物理力的影响，例如轨道力、重力或惯性力。特征的运动可以影响其他特征或被其他特征影响，例如:移动特征可以遵循预定义的路线(例如，道路)，可能是网络的一部分，并且可以在已知点(例如，公共汽车站、航路点)改变路线。两个或更多个移动特征可以被“拉”在一起或推开（例如，飞机将在飞行期间加油，捕食者检测并跟踪猎物，难民团体联合起来）。两个或更多个移动特征可以被约束以在某个时间段内保持给定的空间关系(例如，牵引车和拖车、车队)。ISO 19141:2008没有解决该功能的其他类型的更改。未解决的变更示例包括以下内容:特征的变形。特征或它们的关联的连续。地物非空间属性的变化。要素的几何表示不能嵌入包含其他要素的几何表示的几何复合体中，因为这将需要在要素移动时更新其他要素的表示。因为ISO 19141:2008涉及特征运动的几何描述，所以它没有指定根据地理标识符描述特征运动的机制。这部分是在ISO 19133中完成的。

ISO 19141:2008 defines a method to describe the geometry of a feature that moves as a rigid body. Such movement has the following characteristics.

• The feature moves within any domain composed of spatial objects as specified in ISO 19107.
• The feature may move along a planned route, but it may deviate from the planned route.
• Motion may be influenced by physical forces, such as orbital, gravitational, or inertial forces.
• Motion of a feature may influence or be influenced by other features, for example:
  • The moving feature might follow a predefined route (e.g. road), perhaps part of a network, and might change routes at known points (e.g. bus stops, waypoints).
  • Two or more moving features may be “pulled” together or pushed apart (e.g. an airplane will be refuelled during flight, a predator detects and tracks a prey, refugee groups join forces).
  • Two or more moving features may be constrained to maintain a given spatial relationship for some period (e.g. tractor and trailer, convoy).

ISO 19141:2008 does not address other types of change to the feature. Examples of changes that are not adressed include the following:

• The deformation of features.
• The succession of either features or their associations.
• The change of non-spatial attributes of features.
• The feature's geometric representation cannot be embedded in a geometric complex that contains the geometric representations of other features, since this would require the other features' representations to be updated as the feature moves.

Because ISO 19141:2008 is concerned with the geometric description of feature movement, it does not specify a mechanism for describing feature motion in terms of geographic identifiers. This is done, in part, in ISO 19133.

标准预览图