Results 271 to 280 of about 6,531,643 (307)

Precision Strike Concepts Exploiting Relative GPS Techniques

Navigation, 1994
Many future weapons and weapon carriers are expected to have an avionics suite that includes an integrated INS/GPS set. This relatively inexpensive means of navigation motivates examination of whether very high accuracy (∼ 10 ft circular error probable [CEP]) may be obtainable using only this set of weapon avionics operating in either a relative or ...
GEORGE SCHMIDT, ROY SETTERLUND
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Precise Relative Orbit Estimation of INSAT Missions

AIAA/AAS Astrodynamics Specialist Conference and Exhibit, 2004
The increase in the use of geostationary satellite services calls for the number of geostationary satellites to be placed close to each other in the orbit leading to the colocation of satellites. Present trend in space communication development calls for keeping a number of clustered satellites in a specified formation to synthesize a large ...
Narayanasetti Vighnesam, Anatta Sonney
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Relativity studies with high-precision astrometry

SPIE Proceedings, 1998
The last decade of the 20th century has seen the development of extremely sensitive instruments based on new emerging technologies. These instruments, which are widely distributed on Earth and currently being deployed in space, have provided the means necessary to prove more deeply into the nature and evolutionary history of the universe. Together with
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Precise object-relative positioning for car-like robots

2016 IEEE 19th International Conference on Intelligent Transportation Systems (ITSC), 2016
In this paper, we present a method for increasing the object-relative positioning precision of a car-like robot. In an outdoor environment and on an electric vehicle retrofitted with commercially available actuators, we achieve sub-centimeter and sub-degree accuracy, longitudinally and in heading, respectively. Most noteworthy, this is higher precision
Benjamin C. Heinrich, Dennis Fassbender, Hans-Joachim Wuensche   +2 more
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High Precision Relative Positioning on a Mobile (poster)

Proceedings of the 17th Annual International Conference on Mobile Systems, Applications, and Services, 2019
Although there are many commercial products and services advertising their capability of indoor navigation using smartphone, still the service coverage is highly restricted to the specific area due to tremendous effort on pre-survey and maintenance on positioning resources such as radio map of Wi-Fi signals.
Soyeon Lee, Sangjoon Park
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The computation of relative motion with increased precision

Celestial Mechanics, 1976
Encke's method as modified by Potter to increase the accuracy of orbit computations of gravitationally interacting bodies is applied to the problem of relative motion of non-interacting space vehicles. This technique is then combined with a simple transformation of the independent variable to arrive at a system of equations from which the relative ...
Paul Nacozy, Victor Szebehely
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Design and Test of High Precision Relative Thermometer

2013 Fifth International Conference on Measuring Technology and Mechatronics Automation, 2013
The relative thermometer is designed for monitoring the cave's temperature where the deformation instrument placed in. This paper mainly introduced the circuit design of the relative thermometer, discuss its theoretic error range and validate the reliability of measuring.
null Yang Jiang, null Lv Chongwu
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RELATIVE GRAVITY MEASUREMENTS USING PRECISION PENDULUM EQUIPMENT

GEOPHYSICS, 1940
The precision with which relative‐gravity values may be obtained by the use of suitable pendulum equipment is illustrated by actual data obtained in establishing calibration stations used to facilitate the calibration of gravimeters. A résumé of the operating technique, together with the salient features of the Gulf pendulum equipment is given in ...
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Precision engineering and Einstein: The Relativity Gyroscope experiment

Precision Engineering, 1979
Abstract One hundred years after Einstein's birth and sixty-four years after the publication of his theory of gravity, General Relativity remains one of the least tested of physical theories. This paper outlines the status of Einstein's tests and goes on to describe a new test, the Relativity Gyroscope experiment, made possible by two relatively new ...
C.W.F. Everitt, J.A. Lipa, G.J. Siddall
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A liquid-filled ionization chamber for high precision relative dosimetry

Physica Medica, 2011
Radiosurgery and intensity modulated radiation therapy (IMRT) treatments are based on the delivery of narrow and/or irregularly shaped megavoltage photon beams. This kind of beams present both lack of charged particle equilibrium and steep dose gradients.
Gonzalez-Castano, D. M., Gomez, F., Brualla, Lorenzo, Rosello, J. V., Planes, D., Sanchez, M., Pombar, M.   +6 more
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