Space distributive type camera boresight included angle measurement method

The invention discloses a space distributive type camera boresight included angle measurement method. A high-precision two-dimension rotary table, a customized three-face reflecting prism, a precise angular instrument and a high-precision locating and error compensating device are utilized to construct a measurement system. The customized three-face reflecting prism is installed at the pitching rotating shaft end of the high-precision two-dimension rotary table through a two-dimension adjustment tool, and auto-collimation is performed on the three-face reflecting prism through the precise angular instrument. The two-dimension adjustment tool is adjusted, so looks can always exist when the precise angular instrument performs auto-collimation on the three-face reflecting prism. The rotary table is rotated and the space position of a paralleled light tube is adjusted, so boresights of all cameras can be adjusted to be parallel to the optical axis of the paralleled light tube in sequence. Measurement data generated when the precise angular instrument performs auto-collimation on the three-face reflecting prism are stored, and then the included angle of the cameras to be measured can be obtained through computation. The technology is suitable for being used in space distributive type camera boresight included angle measurement, and the measurement accuracy can be superior to 3''. The method can be applied to three-line array camera integrated measurement and passes on-orbit detection.