中文摘要：

针对无人机导航系统通讯数据量大、实时性高的特点，设计了基于双DSP的导航系统；一个为解码DSP，用于接受地面遥控指令、控制任务设备及处理GPS信息；另一个为导航DSP，用于进行导航控制、下传遥测数据；双口RAM芯片IDT70V27用来保证两者准确的数据通讯；GPS信息的接受通过外扩串口收发芯片TL16C752来实现；实际飞行实验证明该系统可以完全实现无人机的导航任务，且系统简单、可靠。

英文摘要：

According to the huge amounts of communication date, high real--time demand, one designed is presented that navigation system based on dual DSP. One is DSP of decoding, works as receiving the remote control command from ground station, controlling the mis- sion equipment and processing the GPS information. Another is the DSP of navigation, applied to navigation control and downloading the te- lemetry data. The chip of dual port IDTTOV27 is introduced to insure the data communication correctly between dual DSP. The receiving of GPS is realized by the TL16C752. Flight experiment showed that the system is successful, reliable and simple.