Based on the principle of the X-ray pulsar navigation(XPNAV) system,a light quantum detection based XPNAV hardware in-the-loop simulation system was designed and implemented.Through analyzing the X-ray pulsar signal,the theoretical model of the system was established,the Renyi entropy method of pulsar profile cumulation was proposed,and the X-ray pulsar signal was generated.The experiments show that this simulation system is simple and practical,and can accomplish the navigation experiments very...