Results 271 to 280 of about 1,067,960 (312)

Radio Tracking of Earth Satellites

American Journal of Physics, 1959
The characteristics of artificial earth satellite orbits are summarized and related to an observer on the surface of the earth. Equations and analytical approaches are developed for determining the orbit of a transmitting satellite using information from equipment for measuring the Doppler shift of the transmitted signal.
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A Radio-Tracking System for Subterranean Rodents

The Journal of Wildlife Management, 1989
Utilisation de deux sortes de colliers equipes d' emetteur radio pour suivre les deplacements de Spalax ehrenbergi dans son habitat naturel.Le signal est capte sur un rayon de 30 a 100m et il permet de suivre l'animal jusqu'au centre de son territoire sans perturber son comportement.Le collier ou le poids de l'emetteur est reparti de chaque cote de l ...
Rony Rado, Joseph Terkel
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Radio Tracking of a Fin Whale ( Balaenoptera physalus )

Science, 1978
A tagged whale of the genus Balaenoptera was intermittently tracked by radio for 27.8 hours over a distance of about 145 kilometers. Data on breathing and movement show that during that time the whale took 58 breaths in 130 minutes and traveled 20 kilometers at more than 9 kilometers per hour.
G C, Ray, E D, Mitchell, D, Wartzok, V M, Kozicki, R, Maiefski   +4 more
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OSTEOARTHROSIS IN A WOLF (Canis lupus) RADIO-TRACKED IN MINNESOTA

Journal of Wildlife Diseases, 1980
Osteoarthrotic changes are described in the skeleton of an old wolf (Canis lupus) from Minnesota. Osteophyte formation appeared sufficient to restrict severely the range of motion of the joints. Despite this impairment the wolf ranged over 100 km2 and killed a minimum of one or two adult white-tailed deer (Odocoileus virginianus) during a 6-week period
S H, Fritts, D D, Caywood
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Gravitational Inconsistency in the Lunar Theory: Confirmation by Radio Tracking

Science, 1968
When range and Doppler observations of space probes near or on Moon are reduced by use of a lunar ephemeris calculated from the Brown lunar theory, residuals as large as 440 meters in position and 1.5 millimeters per second in velocity are observed.
C N, Cary, W L, Sjogren
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Radio tracking of artificial earth satellites

Journal of the British Institution of Radio Engineers, 1961
The accuracy of position determination required for the various purpo for which earth satellites may be used is discussed briefly. The capabilities of optical tracking methods are indicated.The three principal radio methods are those using radar, Doppler fre quency shift and interferometer techniques. Although radar has already been used to some extent
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Analysis of Wildlife Radio-Tracking Data

The Journal of Wildlife Management, 1991
S. T. Buckland, G. C. White, R. A. Garrott   +2 more
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Wolves (Radio-Tracking)

2021
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Radio-tracking: some applications and limitations

1978
For centuries men have observed and interpreted tracks and signs left by animals. Fieldcraft has grown from a trapper’s art into a biologists’ science, which has been enhanced, rather than made obsolete by the advent of the most recent technology. Murie’s (1936) meticulous ‘Following fox trails’ and Haglund’s (1966) miles of skiing along lynx tracks ...
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Radio tracks crickets

Nature, 2002
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