惯性定位系统的一种数据接口的设计

惯性定位系统在区域测量、海洋和航空测量等方面均有广阔的应用前景。惯性测量精度通常要求比惯性导航精度高几个数量级。为此，从惯性平台到数据处理计算机的接口是很重要的。该文介绍了对一种惯导系统数据接口的分析，以及惯导系统与数据处理计算机的接口电路的设计。实际使用结果表明，分析结果是正确的，接口电路工作可靠，功能较为完善。

Design of interface circuit of an inertial positioning system

An inertial positioning system has been developed from the technology of inertial navigation system. It can be used in local surveying or ocean surveying. The precision of survey system is much higher than navigation system's. So, the data interface between data processing computer and inertial platform is important for survey system. This paper introduces analysis of electric characterstic and transmit protocol of an inertial system data interface, which is used in airplane navigation. This paper also introduces design of interface circuit between inertial system and data processing computer with synchronous interface technology. The system has worked for about 300 h without any fault. The result is satisfied. It evinces that the analysis and design are correct.