Dynamic detection system and method for geometric parameters of vehicle-mounted non-contact overhead line system

The invention relates to the technical field of measurement, and discloses a dynamic detection system and method for geometric parameters of a vehicle-mounted non-contact overhead line system. The detection system comprises a geometric detection unit which is arranged at the vehicle roof and used for detecting the overhead line system, a control unit arranged in a vehicle body and a vibration compensation unit which is arranged at the vehicle bottom and used for detecting vibration of the vehicle body, and is characterized in that the geometric detection unit comprises laser radar, linear array cameras and light sources; the laser radar is arranged at the center of the geometric detection unit; two groups of the linear array cameras are set, each group comprises two linear array cameras, the two groups of the linear array cameras are respectively arranged at two sides of the laser radar, and the linear array cameras in the same group are obliquely arranged relative to the vehicle roof;the laser radar and the