AUGUST 2016 VOLUME 65 NUMBER 8 IEIMAO (ISSN 0018-9456) REGULAR PAPERS Acoustics and Ultrasonics Instrumentation and Measurements Mathematical Modeling of Ultrasonic Gas Flow Meter Based on Experimental Data in Three Steps ................................... ................................................................................... W.-J. Zhu, K.-J. Xu, M. Fang, W. Wang, and Z.-W. Shen Robust Precise Time Difference Estimation Based on Digital Zero-Crossing Detection Algorithm ............... Z. Chen and Z. Li Instrumentation for Measurement of Electric Power Systems, Energy Metering, Electric Power Quality Predictive Diagnosis of High-Power Transformer Faults by Networking Vibration Measuring Nodes With Integrated Signal Processing ........................................................................ S. Saponara, L. Fanucci, F. Bernardo, and A. Falciani Three-Phase Harmonic and Sequence Components Measurement Method Based on mSDFT and Variable Sampling Period Technique ........................................ I. Carugati, C. M. Orallo, P. G. Donato, S. Maestri, J. L. Strack, and D. Carrica Uncertainty Analysis, Accuracy, Precision and Parameter Estimation Characterization of an Underwater Positioning System Based on GPS Surface Nodes and Encoded Acoustic Signals ............... ......................................................... J. Aparicio, A. Jiménez, F. J. Álvarez, D. Ruiz, C. De Marziani, and J. Ureña Numerical Optimization Problems of Sine-Wave Fitting Algorithms in the Presence of Roundoff Errors .............................. ......................................................................................... B. Renczes, I. Kollár, A. Moschitta, and P. Carbone 1726 1739 1749 1761 1773 1785 Built-in Self-Test, Design-for-Testing, Fault Diagnosis and Fault-Tolerance Adaptive Digital Beamformer Autocalibration Using an Injected Noise Source ............................................................ ................................................................................ J. P. Bruckmeyer, A. Hinshaw, C. E. Otero, and I. Kostanic Analysis of Nonideal Behaviors Based on INL/DNL Plots for SAR ADCs ............. C.-P. Huang, H.-W. Ting, and S.-J. Chang 1796 1804 Imaging Techniques and Instrumentation Modeling Uncertainty for a Vision System Applied to Vibration Measurements ........................... A. Lavatelli and E. Zappa 1818 Measurement of Materials and Applications Modular Printed Circuit Boards for Broadband Characterization of Nanoelectronic Quantum Devices ................................. ................................. M. L. V. Tagliaferri, A. Crippa, S. Cocco, M. De Michielis, M. Fanciulli, G. Ferrari, and E. Prati Rebound Modeling of Spinning Ping-Pong Ball Based on Multiple Visual Measurements ....... Y. Zhao, R. Xiong, and Y. Zhang 1827 1836 (Contents Continued on Page 1725) (Contents Continued from Front Cover) Mechatronics, Industrial Applications and Robotics Visual Servoing-Based Depth-Estimation Technique for Manipulation Inside SEM ........................................................ ......................................................................................... N. Marturi, B. Tamadazte, S. Dembélé, and N. Piat Measurement Techniques Setup for the Measurement of Apparent Mass Matrix of Standing Subjects ................................................................ ................................................................................. M. Tarabini, S. Solbiati, B. Saggin, and D. Scaccabarozzi A Novel Hybrid-Channel Attenuation Measurement System at 50–110 GHz ........... G. Qiulai, L. Yong, L. Weijun, and H. Hui A Smart Measurement System With Improved Low-Frequency Response to Detect Moving Charged Debris ......................... ........................................................................... T. Addabbo, A. Fort, M. Mugnaini, E. Panzardi, and V. Vignoli High-Precision Time Digitizer Based on Multiedge Coding in Independent Coding Lines ............................................... ........................................................................................................... R. Szplet, D. Sondej, and G. Grze˛da Optical Measurement of Angular Deformation and Torque Inside a Working Drillstring ................................... M. F. Gard Multi-Interharmonic Spectrum Separation and Measurement Under Asynchronous Sampling Condition ............................... ............................................................................................................. Z. Sun, Z. He, T. Zang, and Y. Liu 1847 1856 1865 1874 1884 1895 1902 Metrology, Standards and Calibration Self-Calibration of Accelerometer Arrays ............................................... P. Schopp, H. Graf, W. Burgard, and Y. Manoli 1913 Networking, Networks and Sensor Networks Enhancing Accuracy and Robustness of Frequency Transfer Using Synchronous Ethernet and Multiple Network Paths ............ .............................................................. M. Rizzi, S. Rinaldi, P. Ferrari, A. Flammini, D. Fontanelli, and D. Macii 1926 Nondestructive Evaluation and Remote Sensing Influence of Fiber Properties on the Inductive Method for the Steel-Fiber-Reinforced Concrete Characterization .................... ........................................................... P. Juan-García, J. M. Torrents, R. D. López-Carreño, and S. H. P. Cavalaro 1937 Optical Instrumentation, Measurement and Systems Compressive Current Response Mapping of Photovoltaic Devices Using MEMS Mirror Arrays ........................................ ........................................................ S. R. G. Hall, M. Cashmore, J. Blackburn, G. Koutsourakis, and R. Gottschalg 1945 SHORT PAPER Detection of Surface Crack in Concrete Using Measurement Technique With Laser Displacement Sensor ............................ ....................................................................................................................... P. Giri and S. Kharkovsky 1951