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Target recognition based on forward-looking imaging has many potential applications. However, the conventional algorithms fail to locate targets accurately due to the low resolution of forward-looking radar images. Meanwhile, the conventional algorithms always suffer from high computational complexity and cannot satisfy the requirement of real-time processing for high-speed platform. This paper proposes...
The butterfly algorithm is introduced to achieve fast imaging of near space circular synthetic aperture radar (SAR) raw data with high resolution and large scene. The fast algorithm benefits from projecting the frequency domain signal after matched filtering to subimage. Quad tree structures constructed on both signal and image spaces are used to project signal recursively. Following the traversal...
The Google's PageRank algorithm is one of the most famous algorithms in data mining. A quantum version of this algorithm has been proposed in 2012. It is a meaningful step towards the quantum search engine but it can not search solutions. In this paper, we integrate a special operator of quantum search into the quantum PageRank algorithm to make a new quantum algorithm. We called it the Search Rank...
Non-uniform FFT (NUFFT) algorithm is widely applied to Communication, Medical Imaging, Radio Astronomy and so on. NUFFT contributes to SAR imaging and Near-Space SAR also becomes popular recently years. It is difficult to get accurate SAR image in Near-Space because of the obvious motion error and Wide-Swath when the vehicle is slow, so we propose an approach which uses twice NUFFT in ω - k algorithm...
Based on the optimization theory and product recycle and remanufacturing, a closed-loop supply chain logistics network is designed, and a mixed integer nonlinear programming (MINLP) model is constructed. According to characteristic of the model, improved differential evolution algorithm is adopt to solve the problem. As a result, the facility location problem of closed-loop supply chain logistics...
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