Results 21 to 30 of about 852 (131)
Design Considerations for Autocalibrations of Wide-Band ΔΣ Fractional-N PLL Synthesizers
Journal of Electrical and Computer Engineering, 2011 Autocalibration of VCO frequency and loop gain is an essential process in PLL frequency synthesizers. In a wide tuning-range fractional-N PLL frequency synthesizer, high-speed and high-precision automatic calibration is especially important for ...
Jaewook Shin, Hyunchol Shin
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3D Gaze Estimation for Head-Mounted Eye Tracking System With Auto-Calibration Method
IEEE Access, 2020 The general challenges of 3D gaze estimation for head-mounted eye tracking systems are inflexible marker-based calibration procedure and significant errors of depth estimation.
Meng Liu, Youfu Li, Hai Liu
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An Auto-Calibration Algorithm for Hybrid Guided Wave Tomography Based on Full Waveform Inversion
IEEE Access, 2023 Combining with the dispersion characteristics of ultrasonic guided waves, full waveform inversion method shows great application potential in the quantificational detections of defects in plate- and pipe- like structures.
Jiawei Wen +5 more
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Design of auto-calibration system for multi-channel strain gauge
Gong-kuang zidonghua, 2016 In view of problem of wasting time and energy and low efficiency in calibrating process of existing calibration method of strain gauges which adopts single-channel manual operation mode, an auto-calibration system based on cortex-M3 MCU was designed ...
XU Lijiao, LIU Xiang, JI Xiaoju
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Advanced Intelligent Systems, 2020 Although fused deposition modeling (FDM) additive manufacturing technologies have advanced in the past decade, interlayer imperfections such as delamination and warping are still dominant when printing complex parts.
Zeqing Jin, Zhizhou Zhang, Grace X. Gu
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AgriEngineering, 2023 Plastic contamination in marketable cotton bales, predominantly from plastic wraps used in John Deere round module harvesters, poses a significant challenge to the U.S. cotton industry.
Mathew G. Pelletier +3 more
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Estimating Intrinsic Camera Parameters from the Fundamental Matrix Using an Evolutionary Approach
EURASIP Journal on Advances in Signal Processing, 2004 Calibration is the process of computing the intrinsic (internal) camera parameters from a series of images. Normally calibration is done by placing predefined targets in the scene or by having special camera motions, such as rotations.
Roth Gerhard, Whitehead Anthony
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Parallel PWMs Based Fully Digital Transmitter with Wide Carrier Frequency Range
The Scientific World Journal, 2013 The carrier-frequency (CF) and intermediate-frequency (IF) pulse-width modulators (PWMs) based on delay lines are proposed, where baseband signals are conveyed by both positions and pulse widths or densities of the carrier clock.
Bo Zhou +4 more
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Autocalibration of gyroscope based two-step regulator for autonomous vehicles.
MATEC Web of Conferences, 2018 In this article was presented an auto calibration algorithm based on a two-step regulator and gyroscope readings. Unable to use PID, as the PWM signal causes the motors to overheat, it was decided to introduce a two-step algorithm.
Wasilewski Piotr +2 more
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Sparse Auto-Calibration for Radar Coincidence Imaging with Gain-Phase Errors
Sensors, 2015 Radar coincidence imaging (RCI) is a high-resolution staring imaging technique without the limitation of relative motion between target and radar. The sparsity-driven approaches are commonly used in RCI, while the prior knowledge of imaging models needs ...
Xiaoli Zhou +3 more
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