Abstract: The distributed passive radar system will be widely used in the field of network detection of air, earth and sea network radar systems due to its advantages of concealment and anti-stealth. The detection design of non-coherent processing, coherent processing before detection and joint coherent processing and detection are designed for the two application scenarios of short baseline and long baseline in distributed network. In addition, the numerical expressions of detection probability and false alarm probability of the corresponding detectors are derived in detail, which verifies the detection performance combined with simulations. This paper provides the theoretical support of detection methods for the application of target angle estimation of distributed passive short baseline radar and target location of long baseline radar.