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Authentication and secure communication are challenging in Wireless Sensor Network (WSN) for exchanging confidential information. During recent years, WSN is working in conjunction with Internet of Things (IoT) where sensors sense data, make collaboration and transfer the required information to end users. Authentication and reliable transmission of secure data at end-to-end communication link are...
Space and time are crucial characteristics of the physical objects. Considering only the spatial dimension will lead to an ambiguity when objects are mapped from the physical world to cyber world, therefore the temporal and logical dimensions also should be addressed in the mapping process. In this context we propose STLF, a spatial-temporal-logical framework that observe the relations that holds...
The fuzzy double-threshold track association algorithm using the adaptive threshold (AT-FDTTA) is presented in this paper. The AT-FDTTA is described in detail at first. Then, the simulations of two different cases are designed to illustrate the improved performance caused by the adaptive threshold. Both the simulation results show that the correct association rate of the AF-FDTTA proposed here is...
Internet of Things (IoT) aims to connect everything at anywhere and anytime, in which objects need to be mapped from the physical world to the cyber world for further processing. Time and space characteristics are the basic features of objects in the physical world, and are significant for objects' physical-cyber world mapping. However, space-time data is usually formatted in different ways, and may...
A miniaturized dual-band bandstop filter (DBBSF) is proposed by using T-shaped defected microstrip structure (DMS) and U-shaped defected ground structure (DGS). To verify the design concept, the DBBSF is simulated and fabricated. Compared with other published filters, the proposed DBBSF occupies the minimal normalized area. Moreover, the center frequency of the first stopband and the second stopband...
Internet of Things (IoT) develops rapidly and becomes a hot topic around the world now. After analyzing and comparing the current IoT layer models, a three-dimension (3D) technology model is proposed to classify the complicated IoT technologies logically for the existing IoT. Furthermore, U2IoT (Unit IoT and Ubiquitous IoT) model is summarized and the layer model is updated by adding social layer...
Bird-strike avoidance system usually uses marine radar with limited resolution for surveillance of low-altitude airspace. When the target of interest is flock in high target density, the targets are so closely spaced so one cell on the radar display always represents several birds. Therefore, it is sometimes not necessary to detect and track individual target with accuracy. In this paper, a central...
Scattering computing of metal-media complex structure and structure with cavity has been one of the problems in electromagnetic (EM) scattering theoretical calculation field for many years. A novel method, substituting data mining modeling for original theoretical modeling, is proposed creatively in this paper, attempting to solve the problem by machine learning theory. Data mining modeling is to...
Avian radar surveillance system used to monitor bird movements can effectively prevent bird strikes. Due to most airport companies' demand of low-cost avian radar detection, here an avian radar system based on single marine radar is developed by tilting the antenna part. Meanwhile a scheme for bird flying track estimation is presented, using linear neutral regression method to extract three-dimensional...
The development for Internet of Things and RFID technology is described in this paper. A feasible scheme and layered structure is proposed for Internet of Things. Its management is presented according to the demand for Internet of Things in China. The general system contains two parts: computer information subsystem and RFID terminal subsystem, the latter of which is the main focus. The management...
Radio frequency identification (RFID) is an emerging wireless technology with highly promising applications in the future pervasive computing scenario. In an RFID system, the anti-collision algorithm is one of the primary mechanisms to address the issue of multi-object identification. This paper firstly introduces the basics of the anti-collision algorithm in RFID system. Then, field programmable...
Based on the technology of Internet of Things, its working processes is described in detail: RFID (Radio Frequency Identification) Coding, RFID-NS (RFID-Name Service) and RFID-IS (RFID-Information Service). By taking EPC code as a significant example, firstly, the conversion between bar code and RFID code is analyzed; secondly, the transformation principle from RFID code to domain name by RFID-NS...
Highway has become an important traffic way, large number of cars are running on highway everyday, and a convenient and fast method for highway toll is an important research aspect in intelligent transportation system (ITS). radio frequency identification (RFID) technology used in highway electronic toll collection (ETC) system is a new research field. This paper introduces the RFID antenna design...
Intelligent transportation system (ITS) has been widely accepted to be an advanced technology for efficient city traffic control. Logistics, e.g. freight transportation, is a key subsystem of ITS. However, how to effectively capture and transfer logistics information has become a challenging and demanding issue in both research and industry communities. To address this problem, electronic product...
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