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In the compound-Gaussian background, for the problem that a fusion-based detector was not fully adaptive when using the sample covariance matrix (SCM) estimation, this paper replaces SCM with the normalized sample covariance matrix (NSCM) to estimate the clutter covariance matrix and a new empirical formula of the adjustable parameter of the adaptive NSCM-based detector is derived. At last, the CFAR...
MapReduce (MR) has been widely used to process distributed large data sets. Meanwhile, speculative execution is known as an approach for dealing with same problems by backing up those tasks running on a low performance machine to a higher one. In this paper, we have modified some pitfalls and taken heterogeneous environment into consideration. We also have implemented it in Hadoop-2.6 based on node...
Radio Frequency Identification (RFID) is considered to be an authentication technology of great potential. Due to the bright future of low-cost RFID tags in practical situations, the authentication towards multiple tags and tag groups has become the research hotspot. However, there are many concerns about the security risks and privacy issues in lightweight RFID authentication scenarios. Many researches...
Radio Frequency Identification (RFID) is a potential technology with the purpose of replacing the barcodes. The authentication towards multiple tags and tag groups has become the research hotspot considering of practical prospects of low-cost RFID tags. However, there are many concerns about the security risks and privacy issues due to the lightweight authentication property of the RFID tags. Many...
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