With the characteristics of SOPLAT and MOPLAT with passive localization, in combination with the requirements of the parameter detection of the radiant points and the implementation, the passive localization of the interfering and radiant point based on TDOA and FDOA is researched by using two unmanned planes as platforms. The optimizing station project for unmanned plane and the measures to improve the precision localization of interfering point are put forward through the analysis of how to locate interfering point and the simulation of localization errors.