基于差分卫星导航的着舰引导技术分析

Research on Carrier Landing Technique Based on Differential Satellite Navigation

着舰引导技术是航母/舰载机系统的核心技术,差分卫星导航相对定位精度高,广泛应用于近距离相对定位,基于差分卫星导航的着舰引导技术是当前着舰引导技术研究的热点。载波相位周跳是影响差分卫星导航相对定位精度的关键因素。本文在分析基于差分卫星导航的着舰引导系统架构的基础上,提出一种改进的包含周跳的卡尔曼滤波模型。该模型能够削弱差分卫星导航相对定位处理流程中载波相位周跳影响,提高相对定位精度,试验结果证明了本文所提卡尔曼滤波模型的有效性。

Carrier landing technique is one of the most important techniques of carrier/aircraft system.Differential satellite navigation has high accuracy and is widely applied in relative positioning.Landing technique based on differential satellite navigation is currently a hot researching direction.Carrier phase cycle slip influences the relative positioning accuracy.The architecture of the relative positioning method based on Kalman filter with cycle jump is analyzed.Reasonable analysis results are given in view of the qualitative and quantitative factors.The algorithm above has high accuracy and can be applied in dynamic environment.