Results 21 to 30 of about 159,010 (257)
Gong-kuang zidonghua, 2018 Due to affects of clock synchronization error, clock timing error, multipath effect, not line of sight （NLOS）delay error, electromagnetic disturbance between positioning substation and positioning card, it has large positioning error in the existing ...
SUN Zhexing, WANG Yanwen
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Research on mine personnel positioning method based on time range
Gong-kuang zidonghua, 2018 Four kinds of mine personnel positioning methods based on time range were researched, namely TOA, TWR, SDS-TWR and TDOA positioning methods, they are less influenced by roadway environment and suitable for mine personnel precise positioning.TOA ...
SUN Zhexing
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Design of an intelligent accurate personnel positioning system for mine
Gong-kuang zidonghua, 2017 In view of problems of difficult deployment and high cost caused by a lot of wired communication cable and low intelligence of request for help in emergency existed in current accurate personnel positioning system of coal mine underground, an intelligent
WU Wei, TANG Lijun, JIANG Decai
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Design of inverted F antenna for identification card of ZigBee accurate positioning
Gong-kuang zidonghua, 2015 An inverted F antenna with small size, high bandwidth and radiation efficiency was designed according to demand for antenna of ZigBee accurate positioning identification card.
SUN Erhua, WU Wei
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Accurate Telescope Mount Positioning with MEMS Accelerometers [PDF]
Publications of the Astronomical Society of the Pacific, 2014 Accepted for publication in PASP, 12 ...
Mészáros, László +3 more
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Intelligent dispatching and command system of underground transport
Gong-kuang zidonghua, 2014 Components and working principle of an intelligent dispatching and command system of underground transport were introduced. The system realizes functions of position monitoring of locomotive, identification of travel direction, switch control, signal ...
WANG Baode
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Gong-kuang zidonghua, 2014 In view of problems of large errors and low accuracy of positioning technology in coal mine, the strapdown inertial navigation system was introduced into coal mine personnel and equipment for precise positioning and navigation.
LIU Xiaowen, WANG Cun, WANG Long
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Road geometry perception without accurate positioning and lane information
IET Intelligent Transport Systems, 2022 Road geometry perception indicates road direction and drivable area for Lane Keeping System and Lane Departure Warning System in Advanced Driver Assistance Systems or routing and decision‐making in Autonomous Driving.
Kan Li +3 more
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Accurate positions of OH sources.
The Astrophysical Journal, 1974 The Owens Valley interferometer was used at 1665, 1667, and 1720 MHz to measure the positions of eleven OH emission sources. The 1720-MHz OH source in W3 (continuum) was found to be 40 seconds away from the H2O maser source and was found not to coincide with any radio or infrared feature.
C. G. Wynn-Williams +2 more
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Manual Resin Gear Drive for Fine Adjustment of Schlieren Optical Elements
InventionsHigh-precision angular positioning mechanisms are essential across diverse scientific and industrial applications, from optical instrumentation to automated mechanical systems.
Emilia Georgiana Prisăcariu +1 more
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