Menetelmä liittyen radiosondiin ja järjestelmä

• Main Authors: HILTUNEN, Eero, STORMBOM, Lars, SURVO, Petteri, LEPPÄNEN, Jukka
• Format: Patent
• Language: Finnish; Swedish
• Published: 31.01.2018
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; CONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILSOF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; INSTRUMENT DETAILS; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; METEOROLOGY; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TARIFF METERING APPARATUS; TESTING

According to an example aspect of the present invention, there is provided a method in connection with a radiosonde, the method comprising measuring at least a temperature, a pressure, a humidity of the atmosphere at several different altitudes, measuring or estimating a temperature of the humidity sensor, and measuring the relative humidity by a capacitor with a polymer insulator, wherein the relative humidity value is corrected based on a correction factor, which is a function of pressure, humidity sensor temperature, and relative humidity, such that the humidity value decreases when pressure decreases.