In order to recognize radar antenna scan type (AST) automatically, an improved antenna scan pattern simulator was developed, and features extraction and automatic recognition methods for electronic scan type (EST) and mechanical scan type (MST) were studied respectively. EST was firstly distinguished from MST based on the characteristic parameters extracted from the maximum main beam pulse sequence; then 8 MSTs were automatically recognized based on the parameters extracted from the pulse sequence in a scan period. The simulation results show that it is able to distinguish between one-dimensional EST, two-dimensional EST and MSTs by this method. Moreover, the correct recognition ratio of MSTs by support vector machine decision tree (SVMDT) is higher than that by decision tree (DT).