Multispectral automatic calibration system

The invention discloses a multispectral automatic calibration system, and belongs to the technical field of multi-photoelectric sensor system testing. The system comprises an off-axis parabolic mirror, a reflector, a CCD image sensor, a composite light source, a laser energy receiver, a simulated laser echo, a cube-corner prism, a small spectroscope, a large spectroscope and an optical window. The off-axis parabolic mirror and the reflector form a test system light tube, the CCD image sensor and the composite light source are both located at the focus of the calibration optical light tube and are vertically conjugated relative to the small spectroscope, the composite light source is the test reference of the test system, and the CCD image sensor is used for self-inspection of the test system reference; the system has the advantages of being high in precision, compact in structure, light in weight and the like, comprehensive performance testing of multiple photoelectric load sensors can be achieved, and the sy