Propellant smoke shielding capability outer field test device and method

The invention discloses a propellant smoke shielding capability outer field test device and method. The device comprises a target plate, a laser illuminator, a visible light sensor, an infrared light sensor, a laser sensor, an attenuation slice and a portable computer. Through the device, image sequences with different wave bands of optical backgrounds shielded by propellant plume smoke can be obtained; the gray-scale value in the image sequence is used for expressing the light intensity change of the optical backgrounds under the smoke shielding condition; the shielding capability of propellant smoke on visible light, infrared light and laser can be finally obtained. The method and the device can realize the test on the integral shielding capability of the smoke field on a test external field, and have the advantages that the structure is simple, the performance is reliable, the use is safe, the repeatability is good, and the like.