Method and device for real-time compensation of roll angle deviation of airborne laser radar

The invention discloses a method and a device for the real-time compensation of the roll angle deviation of an airborne laser radar. A roll angle compensation control device and a roll angle driving device are designed mainly. The devices comprise a roll angle compensation controller, a laser Q switch control circuit, a pumping lamp high-frequency pulse power supply and an electro-optic Q switch.The roll angle compensation controller receives the roll angle deviation measured by a GPS/INS combined measuring system, combines a real-time angle measured by a rotary prism optical electric axial angle encoder for making a judgment and outputs a high-level conduction control signal; the signal and a high-frequency pulse signal of the pumping lamp power supply commonly act on the laser Q switchcontrol circuit so that the laser Q switch control circuit outputs the high-voltage pulse signal to the electro-optic Q switch in a control signal connection period so as to control a laser emitter to emit laser pulses in a proper scanning angle area to realize real-time high-precision compensation of the roll angle deviation.