Abstract: The large amount of data such as the sample covariance, correlation coefficient and graded examination was analyzed in real time to implement statistics analysis of the correlated characteristics between the target detection range parameters. It is concluded that the detection range is highly dependent on parameter type and altitude of sea-air targets, less dependent on the seaair different targets, and the different equipments are uncorrelated to sea-air different targets. An analysis procedure for the test was established. Such procedure is helpful for improving the test quality and shortening the test period.