Upper-air
GPS radiosonde is an Upper-air sounding instrument for measuring various types of meteorological data; wind speed, wind direction, pressure, temperature and humidity.
Wind speed, wind direction and pressure are calculated from the speed of travel and altitude obtained by GPS positioning techniques; and temperature and humidity data measured from respectively tuned thermistor and electrostatic capacitance humidity sensor.
1 sec sampled GPS data and 1 or 0.5 sampled temperature / humidity data are transmitted over PCM via a TDM network. The transmitted data is automatically processed through a data processor at the surface station.
The installed PLL oscillator employs narrow FM and conforms to ETSI.
Temperature | Range | -90℃ 〜 +40℃ |
---|---|---|
Resolution | 0.1℃ | |
Accuracy | ±0.5℃(2σ) | |
Response | 0.5 sec or less (1,000hPa, 6m/s) | |
Humidity | Range | 1%RH 〜 100%RH |
Resolution | 0.1%RH | |
Accuracy | ±7.0%RH(2σ) | |
Response | 0.5 sec. or less (1,000hPa, 25°C) | |
GPM Altitude | Range | -200m to 40000m |
Resolution | 0.1 m | |
Accuracy | ±5m(rms) | |
Pressure | Range | 1050hPa to 3hPa |
Resolution | 0.1hPa | |
Accuracy | Surface to 100hPa: +/-1hPa | |
100hPa to 3hPa: +/-0.5hPa | ||
Wind Direction | Range | 0deg to 360deg |
Resolution | 0.1 deg | |
Wind Speed | Range | 0m/s to 200m/s |
Resolution | 0.1m/s | |
Response | ±0.2m/s(rms) | |
Transmitter | Center Frequency | 404.5MHz |
Adjusted Frequency Range | 400MHz to 406MHz | |
Occupied Bandwidth | 15 KHz or less | |
Transmission Power | 100mW | |
Modulation Type | FM | |
Standard | EN302 054 V1.1.1 | |
Transmission Type | Type | Digital PCM |
Line Speed | 1200bps | |
Transmission Range | 250km or greater | |
Sounding Cycle | 1 sec. or 0.5sec. | |
Power Source | Voltage | 3.0VDC |
Current | 240mA | |
Type | AA lithium batteries × 2 | |
Max. Sounding Time | 240mins or more | |
Enhanced Interface | Standard | ADPort × 3ch |
Optional | Interface for ECC OzoneSonde | |
Interface for Snow White | ||
AD Port X 8ch Max. for other applications | ||
Outlook | Dimension (WHD) | 98(W)×155(H)×88(D) mm |
Weight | 150g or less |