The restoration of rotational motion blurred image involves a lot of interpolations operators in rectangular-to-polar transformation and its inversion of polar-to-rectangular. The technique of interpolation determines...
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A new method to detect laser parameter is proposed in this paper. The improved Michelson Interferometer is used as experiment system to detect parameter. In the proposed detection method, the interference images in va...
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Owing to the weaknesses of existing correlation detection methods in digital fingerprint matching, such as difficult to determine the threshold and low matching accuracy rate, a method proposed in digital fingerprint ...
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In this paper, a semi-fragile watermark solution based on quantization index modulation in the wavelet region was proposed. The algorithm employs a compressed halftoned binary image as watermark and embeds it in the w...
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In this paper, a novel curve reconstruction method based on A* algorithm from a set of dense scattered points was proposed. Our method can not only reconstruct dense scattered points with single connected complicated ...
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Star tracker is one of the most important spacecraft attitude sensors which can achieve accuracies within several arc-seconds utilizing star identification and star tracking. The refresh rate and accuracy of star trac...
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The purpose of onboard thruster control allocation is to select specific thrusters and calculate their firing durations in order to realize force and torque commands derived from the control system of a *** study is c...
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The purpose of onboard thruster control allocation is to select specific thrusters and calculate their firing durations in order to realize force and torque commands derived from the control system of a *** study is conducted to design an optimal thruster combinations table for the use of onboard real time control allocation *** algebraic method for generating the optimal thruster combinations table(OTCT) with respect to thruster configuration is explained in detail based on linear programming(LP).With the table pre-stored in the onboard computer,a simple but optimal algorithm to solve the thruster control allocation problem in real time is *** proposed new algorithm,which has the same optimal solutions as LP algorithm,is much faster than LP in real time control *** effectiveness is demonstrated in the simulation.
In this paper, we have presented an adaptive Jacobian tracking controller for free-floating space manipulators with uncertainties in both kinematics and *** to the nonlinearly parametric nature of the dynamics of free...
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In this paper, we have presented an adaptive Jacobian tracking controller for free-floating space manipulators with uncertainties in both kinematics and *** to the nonlinearly parametric nature of the dynamics of freefloating manipulators, the conventional linearly-parametricmodel based adaptive control schemes cannot *** here we do not perform controller design based on the conventional dynamics of free-floating space ***, we attempt to resolve this problem based on normal form augmentation *** we have also, for the first time, presented a complete stability analysis of the normal form augmentation based *** applicability and the restriction of this approach has been *** results are presented to show the performance of the proposed controller.
A new path planning method for UAV in static workspace is presented. The method can find a nearly optimal path in short time which satisfies the UAV kinematic constraints. The method makes use of the skeletons to cons...
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SOPC (System on Programmable Chip) is an on-chip programmable system based on large scale Field Programmable Arrays (FPGAs). This paper presented an implementation of an SOPC system with a custom hardware neural netwo...
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