An image measurement technique for trajectory and attitude of cargo airdrop Online publication date: Thu, 13-Jan-2022
by Xingguo Zhang; Binghua Hu; Xiaodong Ma; Jing Li
International Journal of Embedded Systems (IJES), Vol. 14, No. 5, 2021
Abstract: This paper presents a non-contact photoelectric measuring method for the trajectory and attitude of airdrop to meet the test requirements of flight test of air-borne and air-drop of a certain type of transport aircraft. Using the camera array installed on the two walls of the cargo hold, the video recording of the whole process of airdrop is carried out in sections. The space resection, forward intersection, 3D reconstruction and the filtering algorithm are used to realise the real-time calibration, multi encoded points coordinate unification, calculation and splicing of trajectory and attitude data, so as to solve the motion compensation problem for the effect of DE-camera shake on measurement accuracy during flight test. The test results show that the method is feasible, and the data accuracy can meet the requirements of flight test of airdrop, which can provide reliable data basis for airdrop test effect analysis of transport aircraft.
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