地图数字化方法之一。利用手扶跟踪数字化仪,将地图图形转换成矢量数据的方法。数字化时随着标示器的移动,顺序、实时记录当前点的平面坐标值。
寻求各种方式来降低费用,如免费工具来跟踪数字化的性能。
Search for ways to lower overhead, such as free tools to track digital performance.
NACTS是一个将飞机,威胁和目标跟踪数字化的系统,是空战机动检测系统(acmi)的升级换代产品。
NACTS is a computerized aircraft, threat and target tracking system that is the "great-grandson" of the air Combat Maneuvering Instrumentation system, or ACMI.
例如,青少年经常举报的“数字化虐待”,就是指接收到威胁短信或在facebook、MySpace等社交网站上被人跟踪。
For example, teens often report "digital abuse" - receiving threats by text messages or being stalked on facebook or MySpace.
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