Results 91 to 100 of about 1,742 (210)

Influence of Waveform Characteristics on LiDAR Ranging Accuracy and Precision

open access: yesSensors, 2018
Time of flight (TOF) based light detection and ranging (LiDAR) is a technology for calculating distance between start/stop signals of time of flight. In lab-built LiDAR, two ranging systems for measuring flying time between start/stop signals include ...
Xiaolu Li   +4 more
doaj   +1 more source

On-Chip time measurement architectures and implementation

open access: yes, 2009
In recent years, system on chip (SoC) devices have become increasingly popular in many applications, such as automotive, signal processing, portable electronic devices and communication products. This has led to more functionality being integrated onto a
Collins, Matthew
core  

First Order Shaping Local-Oscillator Based Time-to-Digital Converter

open access: yes, 2010
This paper presents a First Order Noise Shaping Local-Oscillator Based Time-to-Digital Converter (LO TDC). The architecture and governing equations of the LO TDC are described.
M. P. Kennedy   +7 more
core   +1 more source

2D Vernier žiedinio laikinio skaitmeninio keitiklio modelis / The model of 2D Vernier time to digital converter based on gated ring oscillators

open access: yesMokslas: Lietuvos Ateitis, 2018
In this paper, the model of 2D Vernier time to digital converter (TDC) based on gated ring oscillators, which is implemented using VHDL hardware description language, is presented.
Marijan Jurgo, Romualdas Navickas
doaj   +1 more source

Design and Validation of a Long-Range Streak-Tube Imaging Lidar System with High Ranging Accuracy

open access: yesApplied Sciences
The Streak-Tube Imaging Lidar (STIL) has been widely used in high-precision measurement systems due to its ability to capture detailed spatial and temporal information.
Chaowei Dong   +8 more
doaj   +1 more source

Magnetic-field-to-digital converter using PWM and TDC techniques

open access: yes, 2006
A high resolution magnetic-field-to-digital converter (MDC) is presented. It is composed of a magnetic-field-to-pulse width converter (MPC), a cyclic pulse-shrinking time-to-digital converter (TDC) and a polarity detector. This prototype circuit has been
Kuo, C.H.; Chen, S.L.; Liu, S.I.
core  

A DTC-Based Snapshot ADPLL With Feedforward Fractional Spur Cancellation and Asynchronous Duty-Modulation Dithering DCO Achieving–71.6 dBc Fractional Spur in 65-nm CMOS Process

open access: yesIEEE Access
This paper presents a DTC-based snapshot all-digital phase-locked loop (ADPLL) that achieves robust fractional spur suppression and low phase noise with compact circuit implementation.
Kihoon Kwon   +13 more
doaj   +1 more source

Design of a Time-To-Digital Converter with Resolution of Sub-Pico Second

open access: yes, 2012
計畫編號:NSC100-2221-E032-066 研究期間:20110801~20120731 研究經費:463,000隨著半導體製程之進步,電晶體的操作速度越來越快。相反的,電晶體的操作電壓卻 越來越低,使得以往在電壓域(Voltage Domain)設計電路變得越來越困難。尤其是在 類比數位轉換器的設計上,要達到高解析度變得十分困難。反之,由於電晶體的操作 速度越來越快,因此在時間域(Time domain)上處理訊號可達到的解析度越來越高。因 此運用時間數位轉換器處理訊號可達具有高解析度、省電 ...
施鴻源
core  

A 3.5 to 4.7-GHz Fractional-N ADPLL With a Low-Power Time-Interleaved GRO-TDC of 6.2-ps Resolution in 65-nm CMOS Process

open access: yesIEEE Access
This paper proposes a low-power design method and a low-noise phase offset calibration technique for a gated ring-oscillator time-to-digital converter (GRO-TDC), which normally consumes a large percentage of most all-digital phase-locked loop (ADPLL ...
Kyoung-Ub Cho   +9 more
doaj   +1 more source

A Configurable Resolution Time-to-Digital Converter with Low PVT Sensitivity for LiDAR Applications

open access: yes
This paper presents an all-digital and configurable resolution time-to-digital converter (TDC) with low process–voltage–temperature (PVT) sensitivity for light detection and ranging (LiDAR) applications.
Cheng-I Cheng   +4 more
core   +1 more source

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