摘要
对一种组合导航终端测试系统的设计进行研究。目前的测试环境仿真与实际情况存在较大差距。针对上述问题,为了更真实地模拟实际飞行试验,对GPS/INS组合导航终端整机的动态性能以及定位精度进行全面的考核,提出一种基于可编程GPS模拟器和三轴飞行转台的半实物仿真测试系统设计。简述了系统的组成和工作原理,对统一场景的建立进行了分析,采用网络时间同步协议实现了系统的精确时钟同步。算例仿真结果证明了测试系统设计的正确性和有效性。
An improved design of a test system for integrated navigation terminal is presented.At present,there is a certain gap between the simulations of the test environment and the actual situation.Aim at the above-mentioned problems,in order to simulate the actual flight test realistically and evaluate the dynamical performance and positioning accuracy of GPS/INS integrated navigation terminal comprehensively,a sort of design of HILS system was described based on a programmable GPS simulator and a three-axis revolving table.The construction and working principle of the test system were summarized.Analysis of the realization of uniform scenario was done.Accurate clock synchronization of the test system was realized by NTP.Two example simulation results verified the effectiveness of this improved design.
出处
《计算机仿真》
CSCD
北大核心
2011年第8期71-75,共5页
Computer Simulation
基金
科技部863计划项目(2008AA12A216)
