Vehicle-mounted strapdown inertia combination field fast calibration device and method

The invention relates to a vehicle-mounted strapdown inertia combination field fast calibration device and method based on satellite orientation. The device is provided with ground observation sighting equipment and multi-rotor unmanned aerial vehicle equipment, and includes a satellite main receiver and a main antenna, a sighting and tracking camera, a collimation light pipe, a stably sighting platform, an optical code disc and a triangle bracket, an unmanned aerial vehicle, a high-precision stabilized holder, a satellite slave receiver, a slave antenna and a special target. The vehicle-mounted strapdown inertia combination field fast calibration method includes the five steps that the ground observation sighting equipment is erected, a prism is collimated, and reading of the optical codedisc is recorded; the multi-rotor unmanned aerial vehicle is launched to determine the current position of the unmanned aerial vehicle; real-time baseline information is resolved; the special targetis sighted and tracked; an