| In the last few years, the DSP technology develops rapidly already applied to many domains. Its specific hardware architecture is very suitable for large data processing algorithm needs to be done. It has highly-efficient, high-speed, precision and so on. It is the preferred device of embedded system requiring algorithm in many areas.As VLSI increasingly improve, more and more powerful functions can be achieved by FPGA. It has a short development cycle, low-cost, easily repeated erasure and programming and simple development advantage. It has been the trend of current electronic design technology.The DTG Strapdown Inertial Navigation system has already been hotspot of inertial Navigation technology. This system is small and need mass data real-time solution. Under the background, this paper presents the project of DSP and FPGA constructing DTG SINS embed system.Firstly, the paper introduces the element theory of the Strapdown Inertial Navigation System and the theoretical base of the systematic design. Secondly, it completes the design of hardware and partial software in the embedded system. The hardware design is the focus of this paper. The hardware platform of system is made up of single DSP and single FPGA, DSP concentrates to the SINS algorithm solution calculation, but FPGA plays the connection role between DSP and each kind of sensor, is a coprocessor of DSP. And the software of system mainly consist of the DSP part and the FPGA part. The FPGA part is take charge of data collection and data communication. The DSP part consist of arithmetic program and communication program. In the process of debugging and testing of system, the system works stable, achieves the basic function of SINS.Finally, I simulate the arithmetic in the MATLAB,using the data of DTG which is acquire from the three axis running flat. The simulation result indicates that the arithmetic of the design has low error and working stably. The design has achieve the need of the application. |
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