Yan, Jie, Xiaosu Xu, and Lihui Wang. “Design Navigation Computer System Based on Double Digital Signal Process and FPGA”. International Journal of Online and Biomedical Engineering (iJOE) 9, no. S2 (March 24, 2013): pp. 46–49. Accessed January 20, 2022. https://online-journals.org/index.php/i-joe/article/view/2579.