An airdrop wave measurement buoy

The invention discloses an airdrop wave measurement buoy comprising a buoy main body, a speed reducing device and a starting device. During working, the airdrop wave measurement buoy is firstly transported by an aviation platform to a target sea area; an aircraft is kept at the appropriate altitude, and then the buoy is released; after the buoy is dropped to a position that does not affect the flight of the aircraft, the starting device controls the movement of the speed reducing device, and a first sliding block moves away from the starting device; the first sliding block pushes a first linkthat transmits the thrust applied by the first sliding block to speed reducing umbrella skeletons; since one end of each speed reducing umbrella skeleton is hinged to the outer wall of a device cabin,the speed reducing umbrella skeleton rotates, and the plurality of speed reducing umbrella skeletons drive an umbrella cloth to expand to form a structure similar to an umbrella, so that the fallingresistance to the buoy is i