Research on performance evaluation of Inter-Satellites laser communication system

Considering that noises with different kinds of distribution, the Gaussian Approximation method is firstly used to evaluate the Inter-Satellites Laser Communications performance precisely. The Moment Generating Function expression of considering shot noise, background optical noise and hot noise is firstly derived. Using this MGF, Gaussian Approximation (GA) method is used to evaluate the Bit Rate Error performance of system. The system performance of OOK modulation of traditional method is compared with GA method in direct detection system. Results indicate that the performance of Inter-Satellites Laser Communications by GA is different from traditional method.