Results 21 to 30 of about 212,842 (307)

Tracking Robot Location for Non-Destructive Evaluation of Double-Shell Tanks

open access: yesApplied Sciences, 2020
(1) Background: Non-destructive evaluation of double-shell nuclear-waste storage tanks at the U.S. Department of Energy’s Hanford site requires a robot to navigate a network of air slots in the confined space between primary and secondary tanks ...
Christopher Cree   +4 more
doaj   +1 more source

Lunar laser ranging

open access: yesEos, Transactions American Geophysical Union, 1990
At the 1990 AGU Spring Meeting in Baltimore, Md., on Tuesday morning, May 29, there will be the special joint Geodesy‐Planetology session Apollo Lunar Laser Ranging and Our Lunar Return. This session of invited papers will focus on and, yes, celebrate lunar laser ranging, which has been made possible by simple laser reflectors of the type first left by
J. E. Faller, J. O. Dickey
openaire   +1 more source

Advantages of combining Lunar Laser Ranging and Differential Lunar Laser Ranging

open access: yesAstronomy & Astrophysics, 2023
Context. Differential Lunar Laser Ranging (DLLR), which is planned to be conducted at Table Mountain Observatory (TMO) of Jet Propulsion Laboratory (JPL) in the future, is a novel technique for tracking to the Moon. This technique has the potential to determine the orientation, rotation, and interior of the Moon much more accurately if the expected ...
Mingyue Zhang   +2 more
openaire   +1 more source

Satellite Laser Ranging System at Geochang Sta

open access: yesJournal of Astronomy and Space Sciences, 2018
Korea Astronomy and Space Science Institute (KASI) has been developing the space optical and laser tracking (SOLT) system for space geodesy, space situational awareness, and Korean space missions. The SOLT system comprises satellite laser ranging (SLR),
Hyung-Chul Lim   +7 more
doaj   +1 more source

Ultra-fast optical ranging using quantum-dash mode-locked laser diodes

open access: yesScientific Reports, 2022
Laser-based light detection and ranging (LiDAR) is key to many applications in science and industry. For many use cases, compactness and power efficiency are key, especially in high-volume applications such as industrial sensing, navigation of autonomous
Philipp Trocha   +8 more
doaj   +1 more source

A data-adaptive network design for the regional gravity field modelling using spherical radial basis functions

open access: yesGeodesy and Geodynamics
A high-precision regional gravity field model is significant in various geodesy applications. In the field of modelling regional gravity fields, the spherical radial basis functions (SRBFs) approach has recently gained widespread attention, while the ...
Fang Zhang, Huanling Liu, Hanjiang Wen
doaj   +1 more source

Investigation into Electromagnetic Compatibility Conducted Susceptibility of a Laser Ranging System

open access: yesPhotonics, 2023
Laser ranging systems are a widely used form of electronic system and are generally influenced by complex electromagnetic environments. We used a laser ranging system comprising the VL53L0X laser ranging sensor module as the research object and designed ...
Peng Huang   +4 more
doaj   +1 more source

Research of collision avoidance and ranging system of mine locomotive based on laser ranging

open access: yesGong-kuang zidonghua, 2014
For problems of incorrect ranging caused by interference and high cost of existing collision avoidance system of mine locomotive, a collision avoidance and ranging system of mine locomotive based on laser ranging was designed by use of STC90C516RD ...
WANG Denggui, YANG Ya
doaj   +1 more source

Laser back scatter: Limitation to higher repetition rate [kHz] Satellite Laser Ranging system

open access: yesGeodesy and Geodynamics, 2021
Satellite laser ranging (SLR) with higher repetition rate is the recent trend for its various advantages. Laser backscatter (coincidence between recently transmitted pulses and received pulses near the detector) is found to be a constraint for the ...
Farhat Iqbal   +3 more
doaj   +1 more source

Research on laser measuring device of surface displacements of mine roadway

open access: yesGong-kuang zidonghua, 2018
In view of problems of inconvenient measurement, time consuming, high labor intensity and uncontrollable errors of existing cross-measuring methods of surface displacements of mine roadway, a laser measuring device of surface displacements of mine ...
YE Meitu, LIANG Yiwei, WANG Kun
doaj   +1 more source

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