Study On The Sensitivity Measuring Methed For The Space Optical Communication System

With spacelaser communication technologies,the rapid development of its communication system prior to the use of ground testing technology, testing devices, is particularly important. In this paper, we researched testing methods of receiver sensitivity of the space laser communication systems .In this paper, based on the traditional power calculation formula set up optical power simplified calculation model of the space laser communications . Also according to the working environment of space optical communication, as well as factors such as communication bandwidth, simplified calculation model of optical power to make further amendments to.Space optical communication system according to the definition of receiver sensitivity to design receiver sensitivity testing methods .Alternative method, analog optical communication system receiver working environment, Measured the receiving optical power. to meet a certain communication bandwidth and bit error rate of optical communication systemDesigned test equipment, including large-diameter collimator and the off-axis parabolic reflectors. analysis of errors generated by the test methods and test equipment...