Research on DSP-based Integrated Navigation Terminal

The GNSS/INS integrated navigation system is widely utilized in various fields due to its high precision and reliability. However, traditional multi-core architectures often face challenges such as hardware complexity, high power consumption, and large size. To address these limitations while maintaining navigation accuracy, this paper proposes an integrated navigation terminal design based on a loosely coupled GNSS/IMU algorithm, utilizing a single DSP chip as the core processing unit. By implementing timed interrupt tasks on the DSP chip, the design achieves efficient data acquisition and fusion, significantly reducing reliance on additional hardware and simplifying the system architecture. Experimental results demonstrate that the terminal achieves a positioning accuracy of less than 1 meter, a velocity error below $0.5 \mathrm{~m} / \mathrm{s}$, and a heading error within 1 degree, confirming the effectiveness and reliability of the proposed method.