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MTT-S International Microwave Symposium Digest, 2005
Two SAW stabilized oscillators with FM and PAM capability have recently been designed and breadboarded to provide 300 ppm frequency stability over a -70/spl deg/ C to +70/spl deg/C environment. The circuits are being developed for use in low cost, expendable radiosondes operating at 403 MHz and 1680 MHz.
D.J. Dodson +3 more
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Two SAW stabilized oscillators with FM and PAM capability have recently been designed and breadboarded to provide 300 ppm frequency stability over a -70/spl deg/ C to +70/spl deg/C environment. The circuits are being developed for use in low cost, expendable radiosondes operating at 403 MHz and 1680 MHz.
D.J. Dodson +3 more
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Position measurements with radiosondes
IEEE Journal of Oceanic Engineering, 1989The use of Omega sondes, designed for the determination of upper air wind vectors, for relative position measurements on the ground is described. The technique shows promise in measuring the deformation of sea ice, the motion of oceanic surface water, and the trajectories of constant-level balloons.
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Response of Radiosonde Thermistors
Review of Scientific Instruments, 1957The lag coefficient of a thermometer of cylindrical shape is shown to be approximately proportional to the one-half power of its diameter and inversely proportional to the one-half power of the product of ventilation speed and density of the environmental air.
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The Reference Radiosonde as a Tool for Improving Meteorological Data from Conventional Radiosondes
IEEE Transactions on Geoscience Electronics, 1973The Weather Service of the Federal Republic of Germany, along with several other national services, has responded to an international call for development of reference radiosondes. Such devices make use of sensing methods with a high degree of precision which are superior to any conventional upper-air sensing system.
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