Results 11 to 20 of about 10,408,415 (315)

Optical Frequency Comb Frequency-division Multiplexing Dispersive Interference Multichannel Distance Measurement

open access: yesNanomanufacturing and Metrology, 2023
An optical frequency comb (OFC) frequency-division multiplexing dispersive interference multichannel distance measurement method is proposed. Based on the OFC dispersive interference, the wide OFC spectrum is divided into multiple channels using a ...
Xu Liang   +4 more
semanticscholar   +1 more source

Obstacle Distance Measurement Under Varying Illumination Conditions Based on Monocular Vision Using a Cable Inspection Robot

open access: yesIEEE Access, 2021
Obstacle distance measurement is one of the key technologies for autonomous navigation of high-voltage transmission line inspection robots. To address the robustness of obstacle distance measurement under varying illumination conditions, this article ...
Le Huang   +3 more
semanticscholar   +1 more source

A geometric distance measurement to the Galactic center black hole with 0.3% uncertainty [PDF]

open access: yesAstronomy & Astrophysics, 2019
We present a 0.16% precise and 0.27% accurate determination of R0, the distance to the Galactic center. Our measurement uses the star S2 on its 16-year orbit around the massive black hole Sgr A* that we followed astrometrically and spectroscopically for ...
R. Abuter   +53 more
semanticscholar   +1 more source

The Role of Millimeter-Waves in the Distance Measurement Accuracy of an FMCW Radar Sensor. [PDF]

open access: yesSensors (Basel), 2019
High-accuracy, short-range distance measurement is required in a variety of industrial applications e.g., positioning of robots in a fully automated production process, level measurement of liquids in small containers.
Bhutani A   +5 more
europepmc   +2 more sources

Characteristics of Distance Errors of Infrared Sensor Relation to Colour Surfaces

open access: yesActa Technologica Agriculturae, 2022
This paper deals with the determination of the absolute errors of a small time of flight (ToF) distance sensor with respect to coloured surfaces at different illumination intensities.
Hrubý Dušan   +6 more
doaj   +1 more source

Message Time of Arrival Codes: A Fundamental Primitive for Secure Distance Measurement [PDF]

open access: yesIEEE Symposium on Security and Privacy, 2019
Secure distance measurement and therefore secure Time-of-Arrival (ToA) measurement is critical for applications such as contactless payments, passive-keyless entry and start systems, and navigation systems.
Patrick Leu   +4 more
semanticscholar   +1 more source

Distance measurement

open access: yesRadiopaedia.org, 2016
Patricia O'Gorman, Henry Knipe
openaire   +2 more sources

IMPLEMENTATION OF THE HAVERSINE METHOD FOR THE APPLICATION OF FINDING TOURIST ATTRACTIONS IN NANGGUNG DISTRICT

open access: yesPilar Nusa Mandiri, 2022
Traveling is one of the most popular hobbies nowadays. Natural tourist destinations located in the countryside are a choice for travelers. There are several tourist sites located in the country of Bogor, one of which is in the district of Nanggung ...
Fety Fatimah   +2 more
doaj   +1 more source

Target distance measurement method using monocular vision

open access: yesIET Image Processing, 2020
Most existing machine vision-based location methods mainly focus on the spatial positioning schemes using one or two cameras along with non-vision sensors. To achieve an accurate location, both schemes require processing a large amount of data.
Jiafa Mao, Huang Wei, Weiguo Sheng
semanticscholar   +1 more source

An Ultrasonic Sensor for Distance Measurement in Automotive Applications [PDF]

open access: yes, 2001
This paper describes an ultrasonic sensor that is able to measure the distance from the ground of selected points of a motor vehicle. The sensor is based on the measurement of the time of flight of an ultrasonic pulse, which is reflected by the ground. A
Carullo, Alessio, Parvis, Marco
core   +1 more source

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