【摘要】 针对空地精确制导武器对低成本、高精度、高可靠性导航系统的需求,设计了基于MEMS技术的组合导航系统。该系统基于低成本的微惯性测量组合与GPS接收机,并针对空地制导武器的飞行特点建立了准确的数学模型;利用速度、位置综合模式,采用先进的Kalman滤波理论进行数据融合;最后对该组合导航系统进行了数学仿真试验和数据分析。结果表明,这种低成本、可靠性好、体积小的组合导航系统的导航精度不大于5m,即使在丢星长达30s,导航精度也不大于12m,完全能够满足空地精确制导武器的导航要求。更多还原

【Abstract】 An integrated navigation system for aerial-to-ground guidance weapon was designed based on MEMS and GPS-OEM panel to meet its requirement for low-cost,high-precision and high-reliability. A precise mathematic model was set up based on Micro Inertial Measurement Unit/GPS and the weapon’s flying feature. Data fusion was implemented using Kalman filter with position and velocity as measurement variables. The mathematical simulation and data analysis were made to test the performance of the integrated navigation system. The results show that the low-cost integrated navigation system is less than 5 m in accuracy for up to 30 s interrupted time,and navigation accuracy is less than 12 m. So it can work with better precision and perfect reliability.更多还原