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In this paper, we establish a Dynamic Weapon-Target Assignment (DWTA) model based on the killing region of weapon platform. The model considers the time window constraint, intercept feasibility constraint and guidance constraint, which can guarantee the rationality of the solution and is consistent with the real combat scenario. We propose a combinatorial algorithm derived from heuristic algorithm...
Due to low brightness, the performance of autofocus will serious decline in low contrast images, making it quite difficult to locate the focus region. To tackle this challenge in computer vision, we perform autofocus by conducting a salient object detection method. Based on the mechanism of human visual system, salient object is detected by calculating global saliencies in superpixels. First, the...
The goal of salient object detection is to estimate the regions which are most likely to attract human's visual attention. As an important image preprocessing procedure to reduce the computational complexity, salient object detection is still a challenging problem in computer vision. In this paper, we proposed a salient object detection model by integrating local and global superpixel contrast at...
This paper presents results on the accuracy of the extended (aka autonomous) orbit and clock predictions for the first QZSS satellite in orbit. The purpose of extended prediction is the reduction of the time-to-first-fix of a stand-alone satellite navigation receiver and the improvement of the availability of positioning during weak signal conditions. We describe the models we used to predict satellite...
This paper presents a new mathematical model and solution technique for horizontal wells in two-zone linear composite infinite reservoirs which are assumed to be isotropic in each one of the two zones. The model is solved by using Fourier and Laplace transformation. Based on Duhamel principle, wellbore storage and skin effects can easily be incorporated. Pressure respond curves are plotted with Stehfest...
It was found that many of factors would evidently affect the calibration results in Hybrid III 5th Female Dummy neck calibration tests. This paper developed a BP neural network model for analysis and prediction of the relationship between calibration parameters and neck deceleration characteristics. The input parameters of the BP model are calibration temperature, impact velocity of pendulum, cells...
A mathematical model of the acceleration process of four-wheel-drive vehicle was established and a Traction Control System (TCS) which takes driving slip ratio as the control object was realized with fuzzy control method. The fuzzy controller was designed with Fuzzy Logic Toolbox of MATLAB, and dynamic simulation has been carried out with SIMULINK. The result showed that TCS based on fuzzy control...
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