Results 21 to 30 of about 802,989 (266)
Clean positive operator valued measures [PDF]
Journal of Mathematical Physics, 2005 In quantum mechanics the statistics of the outcomes of a measuring apparatus is described by a positive operator valued measure (POVM). A quantum channel transforms POVMs into POVMs, generally irreversibly, thus losing some of the information retrieved from the measurement.
BUSCEMI, FRANCESCO +4 more
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Online Estimation and Correction of Systematic Encoder Line Errors
Machines, 2017 This paper addresses the identification and correction of amplitude and offset errors in the sinusoidal outputs from incremental position encoders.
Carla Albrecht +3 more
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Measuring position and momentum together [PDF]
Physics Letters A, 2008 We describe an operational scheme for determining both the position and momentum distributions in a large class of quantum states, together with an experimental implementation.
Busch, Paul, Kiukas, Jukka, Lahti, Pekka
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IEEE Access, 2018 In the field of precision docking or assembly of large scale, the orientation and position measurement system is quite demanding. This paper proposes a long-range measuring system with the combination of low-cost tilt sensor and laser sensors to achieve ...
Gaoliang Peng, Yu Sun, Shilong Xu
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Position Measurements Obeying Momentum Conservation [PDF]
Physical Review Letters, 2011 We present a hitherto unknown fundamental limitation to a basic measurement: that of the position of a quantum object when the total momentum of the object and apparatus is conserved. This result extends the famous Wigner-Araki-Yanase (WAY) theorem, and shows that accurate position measurements are only practically feasible if there is a large momentum
Busch, Paul, Loveridge, Leon
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Floor Sensing System Using Laser Reflectivity for Localizing Everyday Objects and Robot
Sensors, 2014 This paper describes a new method of measuring the position of everyday objects and a robot on the floor using distance and reflectance acquired by laser range finder (LRF). The information obtained by this method is important for a service robot working
Yoonseok Pyo +4 more
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Steffensen's inequality for positive measures [PDF]
Mathematical Inequalities & Applications, 2015 We generalize Steffensen’s inequality for positive measures. We obtain conditions for these inequalities which are invariant in form to Steffensen’s inequality for absolutely continuous measures. Further, we produce linear functionals which generate exponential convexity and Cauchy means.
Pečarić, Josip, Jakšetić, Julije
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Collaborative Geolocation Based on Imprecise Initial Coordinates for Internet of Things
IEEE Access, 2018 Non-linear minimum optimization methods, like maximum likelihood estimation method, have been heavily employed in range-based localization problems in plenty of research. However, conventional optimization methods require precise initial values. When the
Liyuan Xu +5 more
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Physical Review A, 2010 The positive operator valued measure (POVM) for a photon counting array detector is derived and found to equal photon flux density integrated over pixel area and measurement time. Since photon flux density equals number density multiplied by the speed of light, this justifies theoretically the observation that a photon counting array provides a coarse ...
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Labelled GM-CBMEMBER filter with adaptive track initiation
The Journal of Engineering, 2019 The initial Gaussian mixture cardinality balanced multi-target multi-Bernoulli (GM-CBMeMBer) filter does not provide track information and assumes that the target birth intensity is known as a priori, but in reality the target may appear anywhere in the ...
Hemin Sun +4 more
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