GPS Dropsonde

The dropsonde as the airborne counterpart, is ejected from aircraft and float to earth on a parachute. Atmospheric soundings from dropsondes provide the ability to measure conditions over remote areas such as the oceans, and sparsely inhabited land masses; They also provide a means to obtain soundings in and around severe weather systems, as hurricanes.

Specification

Temperature Sensor

Type 

Bead resistance

Measurement range

+50-90

Resolution

0.1

Uncertainty in sounding

0.5

Humidity Sensor

Type 

Thin-film capacitor

Measurement range

0100%RH

Resolution

1%RH

Uncertainty in sounding

5%RH

 

Pressure Measurement (Derived from pressure sensor)

Measurement range

1080hPa to 3hPa

Resolution

0.1hPa

Uncertainty in sounding

1080hPa500hPa

1.0hPa

500hPa3hPa

0.7hPa

 

Wind Measurement

Velocity measurement uncertainty

0.3m/s

Directional measurement uncertainty

3°

 

Dimensions and Weight

Dimensions

Φ48×215(mm*mm) 

Weight with dry-cell batteries

200g±20g

 

Lithium-cell Batteries

Voltage

7.5V nominal

Operating time

100mins

 

Telemetry

Frequency Range

400.15 to 406MHz or 425 to 443MHz

Output power

100mW(max)

Modulation

FSK

Data downlink

2400bit/s

Measurement cycle

1s