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Privacy Preserving Solution for the asynchronous Localization of Underwater Sensor Networks

IEEE/CAA Journal of Automatica Sinica 2020年第6期7卷 1511-1527页

作者： Haiyan Zhao Jing Yan Xiaoyuan Luo Xinping Guan Institute of Electrical Engineering Yanshan UniversityQinhuangdao 066004China IEEE Department of Automation Shanghai Jiao Tong UniversityShanghai 200240China

Location estimation of underwater sensor networks(USNs)has become a critical technology,due to its fundamental role in the sensing,communication and control of ocean ***,the asynchronous clock,security attack and mobility characteristics of underwater environment make localization much more challenging as compared with terrestrial sensor *** paper is concerned with a privacy-preserving asynchronous localization issue for ***,a hybrid network architecture that includes surface buoys,anchor nodes,active sensor nodes and ordinary sensor nodes is ***,an asynchronous localization protocol is provided,through which two privacy-preserving localization algorithms are designed to estimate the locations of active and ordinary sensor *** is worth mentioning that,the proposed localization algorithms reveal disguised positions to the network,while they do not adopt any homomorphic encryption *** importantly,they can eliminate the effect of asynchronous clock,i.e.,clock skew and *** performance analyses for the privacy-preserving asynchronous localization algorithms are also ***,simulation and experiment results reveal that the proposed localization approach can avoid the leakage of position information,while the location accuracy can be significantly enhanced as compared with the other works.

关键词： asynchronous clock localization privacy preservation underwater sensor networks(USNs)

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A single-channel 10-bit 160 MS/s SAR ADC in 65 nm CMOS

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Journal of Semiconductors 2014年第4期35卷 138-145页

作者：卢宇潇孙麓李哲周健军 Centre for Analog/Radio Frequency Integrated Circuits (CARFIC) Shanghai Jiao Tong University

This paper demonstrates a single-channel 10-bit 160 MS/s successive-approximation-register （SAR） analog-to-digital converter （ADC） in 65 nm CMOS process with a 1.2 V supply voltage. To achieve high speed, a new window-opening logic based on the asynchronous SAR algorithm is proposed to minimize the logic delay, and a partial set-and-down DAC with binary redundancy bits is presented to reduce the dynamic comparator offset and accelerate the DAC settling. Besides, a new bootstrapped switch with a pre-charge phase is adopted in the track and hold circuits to increase speed and reduce area. The presented ADC achieves 52.9 dB signal-to-noise distortion ratio and 65 dB spurious-free dynamic range measured with a 30 MHz input signal at 160 MHz clock. The power consumption is 9.5 mW and a core die area of 250 ×200 μm^2 is occupied.

关键词： SAR ADC asynchronous clock SAR logic Bootstrapped switch

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维普期刊数据库

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Privacy Preserving Localization Algorithm for Underwater Sensor Networks

Privacy Preserving Localization Algorithm for Underwater Sen...

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第三十九届中国控制会议

作者： Yuan Meng Jing Yan Xian Yang Xiaoyuan Luo Institute of Electrical Engineering Yanshan University Institute of Information Science and Engineering Yanshan University

The position information leakage of underwater sensor networks has been widely concerned. However, the underwater environment has unique characteristics compared with the terrestrial environment, for example, the asynchronous clock,stratification compensation. Therefore, the privacy preserving localization algorithm for terrestrial is not suitable. At present,the proposed privacy preserving localization algorithm is at the cost of reducing the localization accuracy and increasing the complexity of the algorithm. In this paper, a privacy preserving localization algorithm for underwater sensor networks with ray compensation is proposed. Besides, the localization algorithm we designed hides the position information of anchor nodes, and eliminates the influence of asynchronous clock. More importantly, the positioning accuracy is improved. Finally, the simulation results show that the location algorithm with privacy preserving and without privacy preserving have the same location *** addition, the algorithm proposed in this paper greatly improves the positioning accuracy compared with the existing work.

关键词： Underwater sensor networks(USNs) asynchronous clock privacy preserving acoustic ray compensations

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