Infrared and laser compound detection system

The invention discloses an infrared and laser compound detection system, which can realize stable tracking on an infrared moving target and accurate pointing on laser, and realize distance measurement on a target. The system is provided with a fold-back type common-caliber optical receiving head part, infrared rays and laser are separated by using a color separation filter, a small movable target is imaged through an infrared camera, coarse tracking of a two-dimensional rotary table and refined adjusting of a quick deflecting mirror are controlled according to a target centroid position, and emitted laser is accurately pointed to the target. A photomultiplier receives a laser echo signal, and target distance information is worked out according to a laser emission principal wave signal and the echo signal. The system can be carried on an onboard platform, a missile-borne platform and a satellite platform, realizes three-dimensional measurement on an infrared target, and provides information assurance for an aggregate decision.