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The stability of HVDC system is under the influence of the strength of AC system, which is reflected as the AC and DC short-circuit ratio(SCR) on the converter stations. In this paper, a simulation study is carried out on the sending end of a certain HVDC system that has been put into operation under different SCR, using PSCAD/EMTDC. The simulation indicates that with the reduction of SCR, the recovery...
3D pose estimation is an important part of 3D motion estimation, which is useful for visualized operation and control. The paper classified approaches of 3D pose estimation from a monocular image sequence into three types: feature-based approach, optical-flow-based approach and model-based approach. In feature-based approaches, 3D motion are estimated by observing a set of 2D features, such as points,...
Target pose is helpful for maneuvering target tracking system to improve its global performance, but currently it is hardly used. One important reason is that there is short of a suitable pose measurement method. For the reason, a dynamic-template-library (DTL) based method to measure the pose angles of maneuvering target is presented in the paper. It synthetically uses target motion data from radar...
Integrated feature matching algorithm is proposed for aircraft pose estimation based on image sequence. The algorithm chooses posture ratio and correlation coefficient with good distribution as integrated feature, which fuses shape and statistic information. Matching principle is optimization of integrated objective function, which ensures that the ultimate result is global optimal solution. Correlation...
Rigid-Body Model (RBM) is a more precise method for motion description of airborne maneuvering target compared with traditional Particle Point Model (PPM). It includes a pose-angle vector in the target state variable vector to model target motion more exactly, which has the potential to improve the tracking performance. Traditional RBMs are usually too complex to be accomplished in practical application...
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