Software‐based camera stabilisation on unmanned aircraft

Abstract

The concept of software‐based camera control and stabilisation and test results for two degree‐of‐freedom onboard cameras are presented in this paper. Contrary to the conventional gimballed observation cameras, the presented solution makes lightweight gimbal's construction possible. The unmanned aircraft state measurements and information of the target position are used in the computation of the desired angles of the camera rotation axes. The method has been tested using simulation technique. The results obtained in this paper show the need for fast enough camera actuation to stabilise image when aircraft attitude is disturbed by turbulence and attitude changes as a manoeuvre effect. The quantitative relationship between the parameters of camera actuators and achievable pointing accuracy are shown for exemplary flight condition simulation test.

Realizing efficient broadband near-infrared emission and multimode photoluminescence switching via coordination structure modulation in Sb3+-doped 0D organic metal chlorides

“…Recently, lead halide perovskites have attracted significant attention due to their simple low temperature solution synthesis and multicolor emission characteristics, and moreover, NIR emission has also been observed in MAPbI 3 and FAPbI 3 . [11][12][13][14][15] Nevertheless, the intrinsic toxicity of lead and low PLQY of NIR emission severely limit their further application. In parallel, rare earth ion (Yb 3+ , Er 3+ , Nd 3+ ) doped lead halide perovskites have also made remarkable progress in NIR emission, and an eruptive PLQY of nearly 200% has been obtained via a picosecond quantum-cutting process.…”

Proposal for Navigation and Control System for Small Uav

“…The connection between the camera and the main CAN bus enables the use of the same radio connection channel both for aircraft control and for control of the video camera. In addition, the movement control system for the video camera uses flight parameters measured by basic equipment for UAV movement compensation (Pieniążek 2003).…”

In‐flight tests of navigation and control system of unmanned aerial vehicle

“…Satisfactory results of the in‐flight tests of APC‐4 system allow us to undertake further experiments. One of the tasks consisted in simultaneous control of both an UAV and a mobile video camera in such a way that a permanent observation of a selected point on the surface of the Earth is possible (Pienia¸żek, 2003). A technique of automated landing of an UAV, developed by our research team (Tomczyk and Gruszecki, 1999), has also been tested.…”