Results 11 to 20 of about 604,773 (322)

Accuracy of positions and parallaxes.

The Astronomical Journal, 1957
S. L. Lippincott
openalex   +3 more sources

The Accuracy and Efficiency of Posit Arithmetic [PDF]

2021 IEEE 39th International Conference on Computer Design (ICCD), 2021
Motivated by the increasing interest in the posit numeric format, in this paper we evaluate the accuracy and efficiency of posit arithmetic in contrast to the traditional IEEE 754 32-bit floating-point (FP32) arithmetic. We first design and implement a Posit Arithmetic Unit (PAU), called POSAR, with flexible bit-sized arithmetic suitable for ...
Ciocirlan, Stefan Dan, Loghin, Dumitrel, Ramapantulu, Lavanya, Tapus, Nicolae, Teo, Yong Meng   +4 more
openaire   +2 more sources

Absolute Positioning Accuracy Improvement in an Industrial Robot. [PDF]

Sensors (Basel), 2020
The absolute positioning accuracy of a robot is an important specification that determines its performance, but it is affected by several error sources. Typical calibration methods only consider kinematic errors and neglect complex non-kinematic errors, thus limiting the absolute positioning accuracy.
Jiang Y, Yu L, Jia H, Zhao H, Xia H.
europepmc   +6 more sources

RePos : relative position estimation of UHF-RFID tags for item-level localization [PDF]

, 2019
Radio frequency identification (RFID) technology brings tremendous applications in location-based services. Specifically, ultra-high frequency (UHF) RFID tag positioning based on phase (difference) of arrival (PoA/PDoA) has won great attention, due to ...
De Poorter, Eli, Hoebeke, Jeroen, Joseph, Wout, Li, Chenglong, Plets, David, Suanet, Pieter, Tanghe, Emmeric   +6 more
core   +2 more sources

High precision hybrid RF and ultrasonic chirp-based ranging for low-power IoT nodes [PDF]

, 2020
Hybrid acoustic-RF systems offer excellent ranging accuracy, yet they typically come at a power consumption that is too high to meet the energy constraints of mobile IoT nodes.
Cox, B, De Strycker, L, Ottoy, G, Van der Perre, L, Wielandt, S   +4 more
core   +2 more sources

Performance Analysis of Relative Positioning using GPS and BDS signals [PDF]

E3S Web of Conferences, 2019
In general, the satellite signal received by GNSS receivers has errors such as satellite clock error, orbit error, ionospheric delay and tropospheric delay.
Noh Jae Hee, Lee Sun Yong, Lim Deok Won, Jo Gwang Hee, Lee Jin Hyuk, Lee Sang Jeong   +5 more
doaj   +1 more source

Evaluating indoor positioning systems in a shopping mall : the lessons learned from the IPIN 2018 competition [PDF]

, 2019
The Indoor Positioning and Indoor Navigation (IPIN) conference holds an annual competition in which indoor localization systems from different research groups worldwide are evaluated empirically.
Ali, Muhammad Usman, Ben-Moshe, Boaz, Chien, Ying-Ren, Cho, Eunyoung, Ding, Zhenxing, Fang, Shih-Hau, Hacohen, Shlomi, Han, Jaeseung, Hur, Soojung, Jeong, Hyeongyo, Jun, Sungwoo, Knauth, Stefan, Kronenwett, Nikolai, Kuang, Jian, Landa, Vlad, Landau, Yael, Lee, Changeun, Lee, Keumryeol, Lee, Soyeon, Lee, Yonghyun, Li, Xianghong, Li, Yu, Lu, Chuanhua, Lungenstrass, Tomas, Marbel, Revital, Martin Mendoza-Silva, German, Niu, Xiaoji, Opiela, Miroslav, Ortiz, Miguel, Pablo Morales, Juan, Park, Chan Gook, Park, Changjun, Park, Sangjoon, Park, So Young, Park, Yongwan, Perez-Navarro, Antoni, Perul, Johan, Pipelidis, Georgios, Plets, David, Ramon Jimenez, Antonio, Renaudin, Valerie, Rew, Jehyeok, Seco, Fernando, Shimada, Atsushi, Shvalb, Nir, Taniguchi, Rin-Ichiro, Thomas, Diego, Torres-Sospedra, Joaquin, Trogh, Jens, Tsao, Yu, Tsiamitros, Nikolaos, Uchiyama, Hideaki, Vladimirov, Blagovest, Wei, Dongyan, Xu, Feng, Yang, Shi-Shen, Ye, Feng, Ye, Shih-Jyun, Zhang, Wenchao, Zhang, Ying, Zheng, Xingyu   +60 more
core   +2 more sources

Geometric Quality Improvement Method of Optical Remote Sensing Satellite Images Based on Rational Function Model

Remote Sensing, 2022
The high-precision geometric positioning of optical remote sensing satellites is the prerequisite to determine the application capability of satellite image products.
Qingyang Li, Ruofei Zhong, Cankun Yang, Ke Zhao, Chenchen Zhang, Yue Li   +5 more
doaj   +1 more source

Use of optoelectronic tweezers in manufacturing – accurate solder bead positioning [PDF]

, 2016
In this work, we analyze the use of optoelectronic tweezers (OETs) to manipulate 45 μm diameter Sn62Pb36Ag2 solder beads with light-induced dielectrophoresis force and we demonstrate high positioning accuracy.
Cooper, Jonathan M., Juvert, Joan, Liu, Yongpeng, Navarro, Jean-Claude, Neale, Steven L., Tian, Pengfei, Zhang, Shuailong   +6 more
core   +1 more source

Geometric quality assessment of CBERS-4 MUXCAM image

Revista Brasileira de Geomática, 2016
In December 2014, Brazil and China successfully launched the CBERS-4 satellite, the fourth generation of CBERS satellites. In the payload module, the satellite carries the MUXCAM, a 20 m/pixel spatial resolution multispectral camera. The MUXCAM was built
Thiago Statella
doaj   +1 more source