动态传递对准与导航一体化半物理仿真研究

Semi-Physical Simulation of Transfer Alignment and Navigation Integration

摘要:

在机载设备惯导系统的工程实现过程中,研制半物理仿真系统具有重要的意义和实际应用价值。文章从机载设备惯导系统实际工程应用出发,研究了动基座下快速传递对准和高精度捷联姿态解算的实现方法,基于“比力差积分”匹配传递对准算法,及一种改进的四阶龙格库塔捷联姿态算法,设计并实现了基于DSP微型导航计算机的动态传递对准与导航一体化半物理仿真系统。半物理仿真结果表明:系统工作稳定可靠,传递对准和捷联解算精度能够满足低动态下机载设备惯导系统的性能指标。

Abstract:

Developing semi-physical simulation system is of important significance and application value in engineering realization of navigation system on airborne equipment. Based on the real application of navigation system, the realization method of transfer alignment and strap-down solution was analyzed, and “specific force integrated” match algorithm was studied. A new strap-down attitude algorithm based on four steps Rungekutta algorithm was put forward, and navigation semi-physical simulation system was designed based on a DSP navigation computer. Simulation results show the semi-physical simulation system is stable and reliable. Result indicates that transfer alignment and strap-down solution has high precision with the help of algorithm discussed in this paper, and can satisfy the requirement of the navigation system under low maneuver.