关键词: 兵器科学与技术, 地磁, 姿态探测, 卡尔曼滤波, 自适应滤波

Abstract:

The measuring precision of geomagnetic attitude detection system is affected by a variety of noise sources. Firstly, an extended Kalman filter model is established by using a simplified ballistic equation of the projectile's passive period, and then the adaptive filtering process is realized through adaptive estimation of the system noise, measurement noise and steering gear noise. Finally, the adaptive filtering method is simulated. The results show that the adaptive Kalman filter algorithm has strong feasibility, and applies to the geomagnetic attitude detection system.

Key words: ordnance science and technology, geomagnetism, attitude detection, Kalman filtering, adaptive filtering