Title: An image measurement technique for trajectory and attitude of cargo airdrop

Authors: Xingguo Zhang; Binghua Hu; Xiaodong Ma; Jing Li

Addresses: School of Computer Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China; Chinese Flight Test Establishment, Xi'an 710072, China ' Chinese Flight Test Establishment, Xi'an 710072, China ' Chinese Flight Test Establishment, Xi'an 710072, China ' Chinese Flight Test Establishment, Xi'an 710072, China

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.

Keywords: cargo airdrop; camera array; camera motion compensation; 3D reconstruction; measuring method for the trajectory and attitude.

DOI: 10.1504/IJES.2021.120256

International Journal of Embedded Systems, 2021 Vol.14 No.5, pp.465 - 475

Received: 08 Jun 2020
Accepted: 28 Aug 2020
Published online: 13 Jan 2022 *

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