Mini-Refraction Sonde Field Tests.
Abstract
The purpose of this program is to demonstrate that it is feasible to build a small, lightweight meteorological sonde capable of measuring index of refraction (Mini-Refraction Sonde), which can be launched with a 30-gram Pibal balloon. This minisonde uses a rod thermistor for temperature and a carbon hygristor for humidity measurement. For pressure measurement, a Honeywell silicon diaphragm barometer was used. This sensor uses a silicon diaphragm on an evacuated chamber with strain-sensitive resistor sensing. The sensors are electronically time-commutated on a 400-millisecond cycle. A lightweight telemetry transmitter provides 1/2 watt at 400 megahertz. Power is from a lithium battery. Laboratory measurements demonstrate an rms accuracy of 0.5 C temperature and 0.8 millibar pressure. Flight tests show good operation and good agreement with radar and Rawinsonde measurements. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 30, 1977
- Accession Number
- ADA059636
Entities
People
- Curtis D. Motchenbacher
Organizations
- Honeywell International, Inc.