As to the detecting area, the single station detecting far range and low range model is proposed, and the detecting space of the network radar is studied based on that. As to the locating capability, a 3-D space time-difference-of-arrival (TDOA) position system is introduced, and the geometric dilution of precision of the system is analyzed. Taking the jamming aircraft as the typical target of passive radar, the detecting and the locating ability of the passive radar is simulated and analyzed separately by quantitative method. The referred methods above and the conclusions are meaningful to ascertaining the future requirement and the deployment and the application of the passive radar system.