摘要
为了同时满足高动态 GPS接收机动态性能和跟踪精度两方面的需要 ,提出了 FL L和 PL L 相混合的载波跟踪方案。综合了多通道串并组合的伪码快捕方式、基于叉积自动频率跟踪算法的载波跟踪方法以及载波辅助技术等 ,分析了载波频率跟踪和载波相位跟踪的性能 ,介绍了硬件结构。所研制的样机经动态模拟试验表明 ,其动态范围已达到了相对速度 0～ 10 km/s、相对加速度 0～ 10 g、相对加加速度 0～ 4 g/s、初始捕获时间小于 1min。
To keep the dynamics performance and tracking precision of high dynamic GPS receiver at the same time, a FLL and PLL integration technology scheme for carrier frequency tracking is presented,with the PRN code fast acquisition function of multi channel and serial-parallel combined,the carrier frequency tracking technology based on CPAFC algorithms and carrier assistant technology . The performance of carrier frequency tracking and carrier phase tracking are analyzed. The structure of hardware is introduced. The dynamic simulating experiment shows that the dynamic range of this scheme (relative speed: 0 10km/s, acceleration: 0 10g, and acceleration jerk: 0 4g/s) is achieved, and the initial capture time of the sample machine is less than 1 minute.
出处
《遥测遥控》
2002年第3期15-20,共6页
Journal of Telemetry,Tracking and Command
