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https://www.readbyqxmd.com/read/28304367/all-direction-random-routing-for-source-location-privacy-protecting-against-parasitic-sensor-networks
#1
Na Wang, Jiwen Zeng
Wireless sensor networks are deployed to monitor the surrounding physical environments and they also act as the physical environments of parasitic sensor networks, whose purpose is analyzing the contextual privacy and obtaining valuable information from the original wireless sensor networks. Recently, contextual privacy issues associated with wireless communication in open spaces have not been thoroughly addressed and one of the most important challenges is protecting the source locations of the valuable packages...
March 17, 2017: Sensors
https://www.readbyqxmd.com/read/28304366/conditional-random-field-crf-boosting-constructing-a-robust-online-hybrid-boosting-multiple-object-tracker-facilitated-by-crf-learning
#2
Ehwa Yang, Jeonghwan Gwak, Moongu Jeon
Due to the reasonably acceptable performance of state-of-the-art object detectors, tracking-by-detection is a standard strategy for visual multi-object tracking (MOT). In particular, online MOT is more demanding due to its diverse applications in time-critical situations. A main issue of realizing online MOT is how to associate noisy object detection results on a new frame with previously being tracked objects. In this work, we propose a multi-object tracker method called CRF-boosting which utilizes a hybrid data association method based on online hybrid boosting facilitated by a conditional random field (CRF) for establishing online MOT...
March 17, 2017: Sensors
https://www.readbyqxmd.com/read/28304354/accurate-compensation-of-attitude-angle-error-in-a-dual-axis-rotation-inertial-navigation-system
#3
Rui Jiang, Gongliu Yang, Rui Zou, Jing Wang, Jing Li
In the dual-axis rotation inertial navigation system (INS), besides the gyro error, accelerometer error, rolling misalignment angle error, and the gimbal angle error, the shaft swing angle and the axis non-orthogonal angle also affect the attitude accuracy. Through the analysis of the structure, we can see that the shaft swing angle and axis non-orthogonal angle will produce coning errors which cause the fluctuation of the attitude. According to the analysis of the rotation vector, it can be seen that the coning error will generate additional drift velocity along the rotating shaft, which can reduce the navigation precision of the system...
March 17, 2017: Sensors
https://www.readbyqxmd.com/read/28304353/phase-error-correction-for-approximated-observation-based-compressed-sensing-radar-imaging
#4
Bo Li, Falin Liu, Chongbin Zhou, Yuanhao Lv, Jingqiu Hu
Defocus of the reconstructed image of synthetic aperture radar (SAR) occurs in the presence of the phase error. In this work, a phase error correction method is proposed for compressed sensing (CS) radar imaging based on approximated observation. The proposed method has better image focusing ability with much less memory cost, compared to the conventional approaches, due to the inherent low memory requirement of the approximated observation operator. The one-dimensional (1D) phase error correction for approximated observation-based CS-SAR imaging is first carried out and it can be conveniently applied to the cases of random-frequency waveform and linear frequency modulated (LFM) waveform without any a priori knowledge...
March 17, 2017: Sensors
https://www.readbyqxmd.com/read/28304348/an-em-induction-hi-speed-rotation-angular-rate-sensor
#5
Kai Li, Yuan Li, Yan Han
A hi-speed rotation angular rate sensor based on an electromagnetic induction signal is proposed to provide a possibility of wide range measurement of high angular rates. An angular rate sensor is designed that works on the principle of electromagnetism (EM) induction. In addition to a zero-phase detection technique, this sensor uses the feedback principle of magnetic induction coils in response to a rotating magnetic field. It solves the challenge of designing an angular rate sensor that is suitable for both low and high rotating rates...
March 17, 2017: Sensors
https://www.readbyqxmd.com/read/28304337/inertial-motion-capture-costume-design-study
#6
Agnieszka Szczęsna, Przemysław Skurowski, Ewa Lach, Przemysław Pruszowski, Damian Pęszor, Marcin Paszkuta, Janusz Słupik, Kamil Lebek, Mateusz Janiak, Andrzej Polański, Konrad Wojciechowski
The paper describes a scalable, wearable multi-sensor system for motion capture based on inertial measurement units (IMUs). Such a unit is composed of accelerometer, gyroscope and magnetometer. The final quality of an obtained motion arises from all the individual parts of the described system. The proposed system is a sequence of the following stages: sensor data acquisition, sensor orientation estimation, system calibration, pose estimation and data visualisation. The construction of the system's architecture with the dataflow programming paradigm makes it easy to add, remove and replace the data processing steps...
March 17, 2017: Sensors
https://www.readbyqxmd.com/read/28304336/study-on-climate-and-grassland-fire-in-hulunbuir-inner-mongolia-autonomous-region-china
#7
Meifang Liu, Jianjun Zhao, Xiaoyi Guo, Zhengxiang Zhang, Gang Tan, Jihong Yang
Grassland fire is one of the most important disturbance factors of the natural ecosystem. Climate factors influence the occurrence and development of grassland fire. An analysis of the climate conditions of fire occurrence can form the basis for a study of the temporal and spatial variability of grassland fire. The purpose of this paper is to study the effects of monthly time scale climate factors on the occurrence of grassland fire in HulunBuir, located in the northeast of the Inner Mongolia Autonomous Region in China...
March 17, 2017: Sensors
https://www.readbyqxmd.com/read/28304332/a-wellness-mobile-application-for-smart-health-pilot-study-design-and-results
#8
Giovanna Sannino, Manolo Forastiere, Giuseppe De Pietro
Wellness is one of the main factors crucial in the avoidance of illness or disease. Experience has shown that healthy lifestyle programs are an important strategy to prevent the major shared risk factors for many diseases including cardiovascular diseases, strokes, diabetes, obesity, and hypertension. Within the ambit of the Smart Health 2.0 project, a Wellness App has been developed which has the aim of providing people with something similar to a personal trainer. This Wellness App is able to gather information about the subject, to classify her/him by evaluating some of her/his specific characteristics (physical parameters and lifestyle) and to make personal recommendations to enhance her/his well-being...
March 17, 2017: Sensors
https://www.readbyqxmd.com/read/28304330/a-context-aware-s-health-service-system-for-drivers
#9
Jingkun Chang, Wenbin Yao, Xiaoyong Li
As a stressful and sensitive task, driving can be disturbed by various factors from the health condition of the driver to the environmental variables of the vehicle. Continuous monitoring of driving hazards and providing the most appropriate business services to meet actual needs can guarantee safe driving and make great use of the existing information resources and business services. However, there is no in-depth research on the perception of a driver's health status or the provision of customized business services in case of various hazardous situations...
March 17, 2017: Sensors
https://www.readbyqxmd.com/read/28300790/non-destructive-detection-of-wire-rope-discontinuities-from-residual-magnetic-field-images-using-the-hilbert-huang-transform-and-compressed-sensing
#10
Juwei Zhang, Xiaojiang Tan, Pengbo Zheng
Electromagnetic methods are commonly employed to detect wire rope discontinuities. However, determining the residual strength of wire rope based on the quantitative recognition of discontinuities remains problematic. We have designed a prototype device based on the residual magnetic field (RMF) of ferromagnetic materials, which overcomes the disadvantages associated with in-service inspections, such as large volume, inconvenient operation, low precision, and poor portability by providing a relatively small and lightweight device with improved detection precision...
March 16, 2017: Sensors
https://www.readbyqxmd.com/read/28300787/the-impact-of-satellite-time-group-delay-and-inter-frequency-differential-code-bias-corrections-on-multi-gnss-combined-positioning
#11
Yulong Ge, Feng Zhou, Baoqi Sun, Shengli Wang, Bo Shi
We present quad-constellation (namely, GPS, GLONASS, BeiDou and Galileo) time group delay (TGD) and differential code bias (DCB) correction models to fully exploit the code observations of all the four global navigation satellite systems (GNSSs) for navigation and positioning. The relationship between TGDs and DCBs for multi-GNSS is clearly figured out, and the equivalence of TGD and DCB correction models combining theory with practice is demonstrated. Meanwhile, the TGD/DCB correction models have been extended to various standard point positioning (SPP) and precise point positioning (PPP) scenarios in a multi-GNSS and multi-frequency context...
March 16, 2017: Sensors
https://www.readbyqxmd.com/read/28300785/health-monitoring-and-evaluation-of-long-span-bridges-based-on-sensing-and-data-analysis-a-survey
#12
REVIEW
Jianting Zhou, Xiaogang Li, Runchuan Xia, Jun Yang, Hong Zhang
Aimed at the health monitoring and evaluation of bridges based on sensing technology, the monitoring contents of different structural types of long-span bridges were defined. Then, the definition, classification, selection principle, and installation requirements of the sensors were summarized. The concept was proposed that new adaptable long-life sensors could be developed by new theories and new effects. The principle and methods to select controlled sections and optimize the layout design of measuring points were illustrated...
March 16, 2017: Sensors
https://www.readbyqxmd.com/read/28300783/person-recognition-system-based-on-a-combination-of-body-images-from-visible-light-and-thermal-cameras
#13
Dat Tien Nguyen, Hyung Gil Hong, Ki Wan Kim, Kang Ryoung Park
The human body contains identity information that can be used for the person recognition (verification/recognition) problem. In this paper, we propose a person recognition method using the information extracted from body images. Our research is novel in the following three ways compared to previous studies. First, we use the images of human body for recognizing individuals. To overcome the limitations of previous studies on body-based person recognition that use only visible light images for recognition, we use human body images captured by two different kinds of camera, including a visible light camera and a thermal camera...
March 16, 2017: Sensors
https://www.readbyqxmd.com/read/28300782/erratum-sandeep-p-et-al-a-novel-secure-iot-based-smart-home-automation-system-using-a-wireless-sensor-network-sensors-2017-17-69
#14
Sandeep Pirbhulal, Heye Zhang, Md Eshrat E Alahi, Hemant Ghayvat, Subhas Chandra Mukhopadhyay, Yuan-Ting Zhang, Wanqing Wu
n/a.
March 16, 2017: Sensors
https://www.readbyqxmd.com/read/28300781/erratum-sandeep-p-et-al-an-efficient-biometric-based-algorithm-using-heart-rate-variability-for-securing-body-sensor-networks-sensors-2015-15-15067-15089
#15
Sandeep Pirbhulal, Heye Zhang, Subhas Chandra Mukhopadhyay, Chunyue Li, Yumei Wang, Guanglin Li, Wanqing Wu, Yuan-Ting Zhang
n/a.
March 16, 2017: Sensors
https://www.readbyqxmd.com/read/28300766/an-improved-label-free-indirect-competitive-spr-immunosensor-and-its-comparison-with-conventional-elisa-for-ractopamine-detection-in-swine-urine
#16
Sai Wang, Shuai Zhao, Xiao Wei, Shan Zhang, Jiahui Liu, Yiyang Dong
Ractopamine (RCT) is banned for use in animals in many countries, and it is urgent to develop efficient methods for specific and sensitive RCT detection. A label-free indirect competitive surface plasmon resonance (SPR) immunosensor was first developed with a primary antibody herein and then improved by a secondary antibody for the detection of RCT residue in swine urine. Meanwhile, a pre-incubation process of RCT and the primary antibody was performed to further improve the sensitivity. With all the key parameters optimized, the improved immunosenor can attain a linear range of 0...
March 16, 2017: Sensors
https://www.readbyqxmd.com/read/28300763/joint-resource-allocation-of-spectrum-sensing-and-energy-harvesting-in-an-energy-harvesting-based-cognitive-sensor-network
#17
Xin Liu, Weidang Lu, Liang Ye, Feng Li, Deyue Zou
The cognitive sensor (CS) can transmit data to the control center in the same spectrum that is licensed to the primary user (PU) when the absence of the PU is detected by spectrum sensing. However, the battery energy of the CS is limited due to its small size, deployment in atrocious environments and long-term working. In this paper, an energy-harvesting-based CS is described, which senses the PU together with collecting the radio frequency energy to supply data transmission. In order to improve the transmission performance of the CS, we have proposed the joint resource allocation of spectrum sensing and energy harvesting in the cases of a single energy-harvesting-based CS and an energy-harvesting-based cognitive sensor network (CSN), respectively...
March 16, 2017: Sensors
https://www.readbyqxmd.com/read/28300762/an-approach-to-automated-fusion-system-design-and-adaptation
#18
Alexander Fritze, Uwe Mönks, Christoph-Alexander Holst, Volker Lohweg
Industrial applications are in transition towards modular and flexible architectures that are capable of self-configuration and -optimisation. This is due to the demand of mass customisation and the increasing complexity of industrial systems. The conversion to modular systems is related to challenges in all disciplines. Consequently, diverse tasks such as information processing, extensive networking, or system monitoring using sensor and information fusion systems need to be reconsidered. The focus of this contribution is on distributed sensor and information fusion systems for system monitoring, which must reflect the increasing flexibility of fusion systems...
March 16, 2017: Sensors
https://www.readbyqxmd.com/read/28300752/high-q-wafer-level-package-based-on-modified-tri-layer-anodic-bonding-and-high-performance-getter-and-its-evaluation-for-micro-resonant-pressure-sensor
#19
Liying Wang, Xiaohui Du, Lingyun Wang, Zhanhao Xu, Chenying Zhang, Dandan Gu
In order to achieve and maintain a high quality factor (high-Q) for the micro resonant pressure sensor, this paper presents a new wafer level package by adopting cross-layer anodic bonding technique of the glass/silicon/silica (GSS) stackable structure and integrated Ti getter. A double-layer structure similar to a silicon-on-insulator (SOI) wafer is formed after the resonant layer and the pressure-sensitive layer are bonded by silicon direct bonding (SDB). In order to form good bonding quality between the pressure-sensitive layer and the glass cap layer, the cross-layer anodic bonding technique is proposed for vacuum package by sputtering Aluminum (Al) on the combination wafer of the pressure-sensitive layer and the resonant layer to achieve electrical interconnection...
March 16, 2017: Sensors
https://www.readbyqxmd.com/read/28294996/design-and-imaging-of-ground-based-multiple-input-multiple-output-synthetic-aperture-radar-mimo-sar-with-non-collinear-arrays
#20
Cheng Hu, Jingyang Wang, Weiming Tian, Tao Zeng, Rui Wang
Multiple-Input Multiple-Output (MIMO) radar provides much more flexibility than the traditional radar thanks to its ability to realize far more observation channels than the actual number of transmit and receive (T/R) elements. In designing the MIMO imaging radar arrays, the commonly used virtual array theory generally assumes that all elements are on the same line. However, due to the physical size of the antennas and coupling effect between T/R elements, a certain height difference between T/R arrays is essential, which will result in the defocusing of edge points of the scene...
March 15, 2017: Sensors
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