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In consideration of maneuvering spacecraft, the uncertainty of thrust acceleration will cause enormous error to model and track the accelerating motion, it's reasonable to think that the measurements mainly reflect the uncertainty of the thrust acceleration. This paper focuses on modeling and building on-line filter to identify the continuous thrust acceleration to compensate the uncertainty of the...
The uncertainty of thrust acceleration will cause enormous error to model and track the accelerated motion of maneuvered target during orbit transfer process. An on-line minimum-variance estimator was developed for thrust acceleration applied to orbit transfer using discrete-time radar measurements. The mass-flow-rate of propellant was selected as a state variant, which was estimated by employing...
A lot of empirical studies have been done on corporate dividend policy using firm-data, mostly for the US but seldom for emerging markets. In China, corporate dividend policy is still a new phenomenon. Based on the Signaling Theory (Lintner, 1956), two models are established to examine the relationship between corporate dividend policy and financial performance of Chinese listed companies. Sample...
Based on machine vision, the paper describes a new method that measurement error of six degrees of freedom microstructure table 3D posture. The method can measure the place and stance of 3D targets by monocular vision. Make centre of three fixed standard small spheres at microstructure table as mark points characterize the pose of table in 3D space. The fixed camera trace the spheres at table by vision...
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