系统提出采用闭环位置伺服控制，建立跟随误差和数字反馈的模型和算法。
The system proposes the application of a closed loop position servo control and sets up a model and algorithm of er ror tracing and digital feedback.
通过对自整角机原理的认真分析，根据实际系统的应用环境开发了一套新型的自整角机位置信号数字化模型。
A new digitized model of position signal for a set of selsyn system is developed according to the principles of selsyn and the application environment of actual system.
数字地形模型是空间地形数据集合的统称，是具有空间位置特征和地形属性特征的数字描述。
Digital Terrain Model is a general designation of space topographical data set, and it is the digital description with the figure of space position and topographical attributive character.
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