A Reverse Approach to Antenna Specifications for London Buses Next-generation Positioning System

2016 ◽  
Author(s):  
Xin Zhang ◽  
Zhenjun Zhang ◽  
Washington Ochieng ◽  
Shaojun Feng ◽  
Baoyu Liu ◽  
...  
Keyword(s):  
Positioning System ◽  
Next Generation

Signals from Space: The Next-Generation Global Positioning System

2001 ◽  
Vol 6 (4) ◽  
pp. 5-18 ◽  
Author(s):  
Lee Lehmkuhl ◽  
David Lucia ◽  
James Feldman
Keyword(s):  
Global Positioning System ◽  
Positioning System ◽  
Next Generation ◽  
Global Positioning

Novel Positioning Devices for Ultraprecision Machine Tool

2009 ◽  
Vol 407-408 ◽  
pp. 81-84 ◽  
Author(s):  
Hiroshi Mizumoto ◽  
Makoto Yabuya
Keyword(s):  
Control System ◽  
Machine Tool ◽  
Piezoelectric Actuator ◽  
Numerical Control ◽  
Positioning System ◽  
Numerical Control System ◽  
Next Generation ◽  
Positioning Device ◽  
Positioning Devices ◽  
Long Stroke

For ultraprecision machine tool of the next generation, two novel positioning devices are invented by the authors. The first positioning device of nanometer and sub-nanometer resolution with long stroke is the Twist-roller Friction Drive (TFD). For long stroke with 1nm of positioning resolution, the TFD is driven by a servomotor, and it is driven by a piezoelectric actuator for short stroke with 0.1nm of positioning resolution. The second positioning device of short stroke picometer resolution is an active aerostatic guideway employing the Active Inherent Restrictor (AIR). The stroke of the active aerostatic guideway is in the order of 0.1μm, however, the positioning resolution can be 50pm. These positioning devices are integrated into a tri-mode positioning system and each positioning mode is controlled by a numerical control system.

scholarly journals High resolution tip-tilt positioning system for a next generation MLL-based x-ray microscope

2017 ◽  
Vol 28 (12) ◽  
pp. 127001 ◽  
Author(s):  
Weihe Xu ◽  
Noah Schlossberger ◽  
Wei Xu ◽  
Hanfei Yan ◽  
Xiaojing Huang ◽  
...  
Keyword(s):  
High Resolution ◽  
Positioning System ◽  
Next Generation ◽  
X Ray

1477: Durability of Next Generation Flexible Ureteroscopes: Randomized Prospective Study

2004 ◽  
Vol 171 (4S) ◽  
pp. 389-389
Author(s):  
Manoj Monga ◽  
Ramakrishna Venkatesh ◽  
Sara Best ◽  
Caroline D. Ames ◽  
Courtney Lee ◽  
...  
Keyword(s):  
Prospective Study ◽  
Next Generation ◽  
Flexible Ureteroscopes

Aging for the Next Generation of Gerontologists

1996 ◽  
Vol 41 (1) ◽  
pp. 52-53
Author(s):  
Lisa C. McGuire
Keyword(s):  
Next Generation
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