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针对东南大学研制的嵌入式MIMU/GPS紧组合导航系统,研究了基于DSP和FPGA的组合导航计算机数据控制和传输。组合导航计算机由DSP、FPGA以及两片MCU等组成,DSP进行导航计算,FPGA负责外部数据的控制和准备,一片MCU实现GPS控制和解码,另一片MCU传递GPS数据和负责上位机通讯。嵌入式MIMU/GPS紧组合导航系统试验结果表明,MCU及DSP数据部分的控制和传输实时性好,能满足DSP对外围大量数据的需求。
For the embedded MIMU / GPS tight integrated navigation system developed by Southeast University, the integrated navigation computer data control and transmission based on DSP and FPGA are studied. The integrated navigation computer is composed of DSP, FPGA and two MCUs. The DSP performs navigation calculation. The FPGA is responsible for external data control and preparation. One MCU realizes GPS control and decoding, and the other MCU transmits GPS data and is responsible for the communication of the host computer. The test results of embedded MIMU / GPS tight integrated navigation system show that the control and transmission of MCU and DSP data are good in real-time, which can meet the demand of DSP for peripheral large data.