光纤捷联航姿系统在“动中通”的应用

Application of FOG strapdown attitude and jeading reference system in-motion satellite communication

为解决各种环境下"动中通"天线对目标的快速捕获和精确跟踪,天线控制系统采用了低成本光纤捷联航姿系统与单脉冲自跟踪系统相结合的控制技术,目标可见时采用单脉冲自跟踪,同时利用单脉冲自跟踪精度高的特点对光纤捷联航姿系统实时标校,使航姿系统长期保持在高精度的惯性导航水平上;目标被遮挡后利用光纤捷联航姿系统引导跟踪,通过试验及数据分析,该技术的使用使"动中通"天线在任何环境下,跟踪精度达1/10半功率波束宽度,对目标的捕获时间小于1 s。

To find a solution to search for communication satellite quickly and track satellite accurately in-Motion satellite communication. There is a new control technique which combines low cost FOG strapdown attitude and heading reference system and monopulse autotracking system in antenna control equipment. Monopulse autotracking system is adopted when communication satellite is seen,at one time,FOG strapdown attitude and heading reference system is real time proofread with monopulse autotracking system. When communication satellite is obstructed, FOG strapdown attitude and heading reference system is adopted for guiding tracking. Finally via test data analysis,it is achieved that tracking accuracy is 1/10 HPBW and capture time is less than 1 second in kinds of environment.