Wide‐band high‐accuracy ΔΣ ADC using segmented DAC with DWA and mismatch shaping

2017 ◽  
Vol 53 (11) ◽  
pp. 713-714 ◽  
Author(s):  
Y. Wang ◽  
T. He ◽  
P. Silva ◽  
Y. Zhang ◽  
G.C. Temes
Keyword(s):  
Wide Band ◽  
High Accuracy ◽  
Mismatch Shaping ◽  
Δσ Adc

Wide-Band Modeling of the IGBT Module Based on the Physical Structure

2014 ◽  
Vol 986-987 ◽  
pp. 1954-1957
Author(s):  
Hai Feng Sun ◽  
Xiao Ming Wu ◽  
Chen Da Zheng ◽  
Xiao Qian Liu
Keyword(s):  
Objective Function ◽  
Optimization Algorithm ◽  
Physical Meaning ◽  
Wide Band ◽  
Physical Structure ◽  
High Accuracy ◽  
Suitable Model ◽  
Igbt Module ◽  
Distribution Parameters ◽  
Iterative Optimization Algorithm

This paper presents a new modeling method, based on the physical structure of the IGBT module, considering the distribution parameters of high frequency.This method is simple and the wideband model has physical meaning, by choosing suitable model initial parameters as well as the objective function which use the iterative optimization algorithm to solve the model parameters.Comparing the wideband model with the measured results ,the wideband model maintain high accuracy in the range of 100KHz ~ 20MHz.

scholarly journals UAPF: A UWB Aided Particle Filter Localization For Scenarios with Few Features

Sensors ◽  
2020 ◽  
Vol 20 (23) ◽  
pp. 6814
Author(s):  
Yang Wang ◽  
Weimin Zhang ◽  
Fangxing Li ◽  
Yongliang Shi ◽  
Fuyu Nie ◽  
...  
Keyword(s):  
Linear Regression ◽  
Particle Filter ◽  
Error Compensation ◽  
Wide Band ◽  
High Accuracy ◽  
Position Error ◽  
Ultra Wide Band ◽  
Maximum Probability

Lidar-based localization doesn’t have high accuracy in open scenarios with few features, and behaves poorly in robot kidnap recovery. To address this problem, an improved Particle Filter localization is proposed who could achieve robust robot kidnap detection and pose error compensation. UAPF adaptively updates the covariance by Jacobian from Ultra-wide Band information instead of predetermined parameters, and determines whether robot kidnap occurs by a novel criterion called KNP (Kidnap Probability). Besides, pose fusion of ranging-based localization and PF-based localization is conducted to decrease the uncertainty. To achieve more accurate ranging-based localization, linear regression of ranging data adopts values of maximum probability rather than average distances. Experiments show UAPF can achieve robot kidnap recovery in less than 2 s and position error is less than 0.1 m in a hall of 40 by 15 m, when the currently prevalent lidar-based localization costs more than 90 s and converges to wrong position.

Galileo E5 Signal Acquisition and Tracking Based on a Wide-Band Customized Universal Peripheral N210 Platform

2013 ◽  
Vol 765-767 ◽  
pp. 2686-2690
Author(s):  
Ning Yan Guo ◽  
Yan Zhao ◽  
Tian Xing Chu
Keyword(s):  
Radio Frequency ◽  
Wide Band ◽  
High Accuracy ◽  
Signal Acquisition ◽  
Multipath Mitigation ◽  
Front End ◽  
Rf Front End ◽  
Galileo E5

GNSS navigation has its own advantages which make researchers focus on how to effectively receive and process GNSS signals. This typically needs to utilize flexible specialized radio frequency front-ends, and we need to investigate novel software solutions. Due to the good performance of the Galileo E5 signal, the study of its acquisition, tracking and multipath mitigation has become increasingly significant. This paper has developed a customized 100MHz wide-band GNSS front-end. Three wide-band datasets of Galileo E5 signal were collected for case study. Final acquisition and tracking results of Galileo E5a signal successfully verified this customized RF front-end usability. It offers great potential for further studying the multi-constellation GNSS compatibility and interoperability to achieve high accuracy and continuity of GNSS navigation.

A wide-band high-accuracy incremental ADC

2016 ◽  
Vol 90 (2) ◽  
pp. 291-299
Author(s):  
Youngho Jung ◽  
Gabor C. Temes
Keyword(s):  
Wide Band ◽  
High Accuracy

High accuracy wide band analog predistortion linearizer for Telecom satellite transmit section

2010 ◽  
Author(s):  
Jean-Francois Villemazet ◽  
Hissa Yahi ◽  
David Lopez ◽  
Michel Perrel ◽  
Jean Maynard ◽  
...  
Keyword(s):  
Wide Band ◽  
High Accuracy

Wide band resonant ultrasound spectroscopy of spheroidal modes for high accuracy estimation of Poisson coefficient of balls

2008 ◽  
Vol 79 (4) ◽  
pp. 044901 ◽  
Author(s):  
François Deneuville ◽  
Marc Duquennoy ◽  
Mohammadi Ouaftouh ◽  
Frédéric Jenot ◽  
Mohamed Ourak ◽  
...  
Keyword(s):  
Wide Band ◽  
High Accuracy ◽  
Resonant Ultrasound Spectroscopy ◽  
Poisson Coefficient ◽  
Accuracy Estimation ◽  
Resonant Ultrasound

The influence of the setup shape of a portable UWB system’s antennas in sport

2021 ◽  
pp. 175433712110418
Author(s):  
José Pino-Ortega ◽  
Petrus Gantois ◽  
Amaia Méndez ◽  
Markel Rico-González
Keyword(s):  
Measurement Error ◽  
Wide Band ◽  
Static Condition ◽  
High Accuracy ◽  
Ultra Wide Band ◽  
Positioning System ◽  
Accurate Data ◽  
Retest Reliability ◽  
Test Retest Reliability ◽  
High Test

Ultra-wide band (UWB) technology has become one of the most promising technologies of the future. It seems that the positioning of the antenna set influences the accuracy of the player’s performance. This study was aimed to assess the influence of two different antenna positioning system shapes: (i) octagonal installation and (ii) circular installation. A UWB technology was used to track a healthy and well-trained athlete’s (age: 38 years, mass: 76.34 kg, and height: 1.75 m) positioning. Overall, the data measured showed high accuracy in both shape setups in all trajectories assessed in static and dynamic conditions for all speed thresholds. However, the distance covered during jogging and sprinting showed poor accuracy for both shape setups. Moreover, the data measured showed high test-retest reliability and inter-device agreement in the static condition, regardless of the antenna setup shape. In conclusion, both the octagonal and circular antenna setup shape provided accurate data, but the measurement error associated within the setup shape seemed slightly different between the two systems.

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