DSP和TL16C752在无人机GPS导航系统中的应用

Application of DSP and TL16C752 on GPS Navigation System of UAV

针对某无人机导航系统通信数据量大、实时性高,GPS信息关键的特点,设计了一种基于DSP和外扩串口收发芯片TL16C752的GPS数据接收方案:包括硬件接口电路和软件实现。介绍了TL16C752的特点和使用方法,选择GARM IN的GPS15L接收机,解决了因为DSP的两个UART异步通讯串口中断级别比较低,容易被其他系统或外设中断的问题,提高了中断级别,保证了GPS数据的完整性。实际飞行实验证明该方法实现了无人机GPS定位数据的接收,系统简单,可靠。

According to the huge amounts of communication data, high real-time demand, great importance of GPS information in UAV navigation system, a design is presented based on DSP and TL16C75 to receive GPS information： including hardware circuit and software. The property and use method of TL16C752 and GARMIN GPS15L receiver are introduced. The problem that the UART serial port of DSP interruption level is low and easy to be interrupted by other system is solved. The interruption level is enhanced and the receiving of GPS information is assured. Flight experiment shows that system is simple and reliable.