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Due to the complexity of synthetic aperture radar (SAR) image formation and the sensitivity to partial occlusion, automatic target recognition (ATR) remains an important, yet challenging problem in SAR image interpretation. Scattering center model provides a concise and physically relevant description of target's electromagnetic scattering phenomenon which makes it an ideal candidate for ATR. In this...
By utilizing a stepped-frequency wideband radar, high-resolution range profiles (HRRPs) of a target can be obtained. However, due to the high speed of a flying projectile, there are severe distortions on its HRRPs. These distortions, if ignored, will greatly degrade the performance of the pose estimation. In this paper, a method for HRRP motion compensation based on the three dimensional electromagnetic-model...
In this study, an object contour extraction using local structure information (LSI) captured by tri-directional spotlight (TDSL) filter is proposed. The proposed TDSL filter is designed by using three directional spotlight filters with overlapping areas in capturing local structure information around a discontinuity along object contour. The TDSL filter for object contour extraction is consisted of...
Virtual reality technology is of high immersion, interaction and dynamic multidimensional digital information, which are necessary for combining the development of modern sports with the advance of science and technology. Application of virtual reality technology in sports field will not only benefit sport scientific training and digital research on technical theory, but also make for the rapid development...
Water areas are important parts of nature ecosystem and the key of water resources allocation and planning. Research of ecological water demand has vital significance for reasonable allocation of water resources and water conservation. The paper is concentrated on the research of ecological water demand in water areas include rivers, lakes and oceans etc. Meanwhile, it discusses varieties of quantified...
Value engineering, as an important part of modern management methods vigorously advocated by the country, plays a significant role in terms of improving the management level of manufacturing enterprises' logistics cost. This paper uses the principle of value engineering to manage manufacturing enterprises' logistics cost, and applies TOPSIS methods to the segment of functional evaluation of value...
This paper proposes a simulation method for estimating the trajectory error of a linear interpolation cutter path due to the NC Acc/Dec motion around a connection point of two segments for a MC. The algorithm is very simple and efficient for simulation calculation and practical programming. The effectiveness of the method is also evidenced through a detailed comparison of the simulated cutter paths...
Although great achievements have been made in the study of supply-chain performance measurement (SCPM), there are still lots of disputes and pronounced criticisms about current researches. In order to shed light on these problems, especially for these problems which fail to consider strategies or fail to give sufficient consideration of implementation costs of SCPM, we summarize researches on conceptual...
The manufacturing industry is demanding more ‘green’ and low impact on our environment. Dry cutting technology, particularly high-speed dry hobbing cutting, as a green manufacturing process can save resources, reduce environmental damage and costs. This paper presents a study on the process optimization of high-speed dry gear milling with a flying cutter. The research takes factors such as the regenerate...
In this paper we focus on the role of limit order book in trading behavior and market quality by simulation analysis. We develop a model of an order-driven market where traders set bids and asks and post market or limit orders according to their expectation of asset's future price. In order to facilitate the comparison, agents are assumed to have four components of the expectation of future asset...
This paper presents a multi-dimensional fuzzy interpolation neural network (FINN) which extends fuzzy interpolation that was developed to approximate single input single output functions to multi-dimensional space. The multidimensional fuzzy interpolation piecewise approximates multiple-input-single-output functions with small hyper-surfaces defined over fuzzy regions. The vertices of these fuzzy...
This paper proposes a practical approach to estimating the corner errors in contour cutting with a machining center. In this approach, only a few simple and easy trajectory measurements to linear feed motion of machining center are required and then the value of each necessary parameter is decided through a simple operation to the measured data. The comparison results of the estimated corner errors...
In this paper, based on a very simple physical principle, a simple and convenient speed sensor for gasoline engine used in a portable unmanned helicopter (PUH) is developed. The sensor has several favorable features appropriate for a PUH control, i.e. small, light, taking little space, sufficient accurate and handling easy in control operation, especially, easy and low-cost in produce. Moreover, the...
This paper describes the authors' recent work which includes: (1) Performing some improvements to make the LM device developed previously applicable to precisely assessing small size motion trajectories of machining center located on different motion planes; (2) Applying the improved device on a machining center to detect circular and linear motion trajectories within a small area, and discussing...
Information security has drawn much concern nowadays. However, the fact that information risks are related to interrelationships and dependencies among tasks, activities, processes and people is not realized and emphasized. To solve the problem, we extend the design structure matrix (DSM) method proposed by Steward and Eppinger to the field of information security to eliminate waste and shorten the...
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