E G Dymond 1947 Proc. Phys. Soc. 59 645 doi:10.1088/0959-5309/59/4/313
The kew radio sonde
E G Dymond
Show affiliationsThe British radio sonde is a system for telemetering indications of pressure, temperature and humidity from a free balloon to the ground. It is used on a large scale for routine observations of the upper air for meteorological forecasting.
It works on the principle of a varying inductance changing the note of an audio-frequency oscillator, which modulates the radio transmitter. The design of airborne instrument, ground receiving apparatus and calibrating plant is described. An account is given of the performance of the radio sonde, and of the errors to which it is subject in actual operation. The probable errors are in the neighbourhood of ±5 mb. and ±0°
4 C. for pressure and temperature over the atmospheric range up to 22 km. height, and ±10% relative humidity down to temperatures of - 20° C., below which the hygrometer element becomes unreliable or inoperative. The reliability is high, over 95% of the soundings being successful.
- PACS
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93.85.-q Instruments and techniques for geophysical research: Exploration geophysics
92.60.hv Pressure, density, and temperature
84.40.Xb Telemetry: remote control, remote sensing; radar
84.40.Ua Telecommunications: signal transmission and processing; communication satellites
92.60.Jq Water in the atmosphere (humidity, clouds, evaporation, precipitation)
- Subjects
- Dates
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Issue 4 (1 July 1947)
Received 23 December 1946
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The kew radio sonde
E G Dymond 1947 Proc. Phys. Soc. 59 645
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