Reliability Calculation Method Based on General Data of Small Sample Equipment in Launch Site

Based on the launch site ground equipment in mission important guarantee function and high reliability requirements, in order to better solve the equipment failure regularity of distribution with time, the reliability calculation problems when general data for small sample equipment, puts forward the poisson distribution approximately transform the binomial distribution, optimized the launch site equipment under the condition of small sample and operation without failure, The method of reliability calculation based on objective data provides data support for further study of probabilistic safety analysis of ground system in space launch site.