AIRDOS03 - UAS Radiation Dosimeter and Spectrometer
The AIRDOS03, also known as “UAVDOS,” is a compact ionizing radiation detector and spectrometer developed in collaboration with Universal Scientific Technologies s.r.o. and optimized for integration with unmanned aerial vehicles (UAVs).
Applications
- UAV-based atmospheric radiation surveys
- Detection of increased ionizing radiation in convective storm regions
- Mapping radiation gradients near ground-based or airborne sources
- Scientific support for space weather and high-altitude dosimetry research
Key Features
- Fully compatible with TF-ATMON and Pixhawk ecosystem
- Lightweight and low-power (5 V / 3 mA)
- Spectral data output for scientific analysis
- Can operate in real-time streaming mode or store data onboard
- Modular open-source firmware for custom scientific missions
UAV Integration
AIRDOS03 is designed as a sensor for the TF-ATMON system and seamlessly connects to the avionics of UAVs, especially the ThunderFly TF-G2 autogyro. It supports shared power supply, data logging, and telemetry with onboard systems, reducing weight and maximizing flight endurance.
This integration enables high-resolution mapping of radiation intensity in three dimensions and supports dynamic measurements in variable atmospheric conditions.
Where to get it?
AIRDOS03 can be purchased directly from ThunderFly via our contact page. For larger orders or special configurations, feel free to reach out with your requirements.
Although AIRDOS03 was developed in partnership with Universal Scientific Technologies s.r.o., the ThunderFly team handles sales, support, and integration for airborne applications.
Technical parameters
- Measurement of the deposited energy of ionizing radiation in the 40 keV to 80 MeV
- Energy resolution 15 ±2 keV per channel (firmware-dependent)
- Effective number of energy channels: ~65000
- 44 mm³ detection volume
- Radiation spectra integration time: 10 s (configurable by firmware)
- Environmental sensors
- Relative Humidity 0 to 100 %RH (accuracy 2 %RH)
- Temperature -40 to 125 °C (accuracy 0.5 °C)
- Lightweight, compact electronics
- 71 × 51 × 25 mm
- 40 grams
- Interface options: UART (JST-GH - Pixhawk-compatible)
- UART could be converted to USB-C by TFUSBSERIAL01
- Device suitable for real-time spectrum measurement and in-flight data logging.
For more detailed technical description of the radiation sensor go to UST’s AIRDOS03 documentation.
AIRDOS03 provides TELEM/UART connectivity. The UART interface is compatible with the Pixhawk connector standard and enables integration with onboard telemetry systems or flight controllers.
UART Pinout
| Signal | Pixhawk Color | ThunderFly Color |
|---|---|---|
| +5V |  Red | Red |
| RX |  Black |  White |
| TX | Black |  Green |
| CTS | Black |  Blue |
| RTS | Black |  Yellow |
| GND | Black | Black |
TF Payload connector
These signals provide additional functions, including synchronization or inter-device communication. This connector is primarily intended for time synchronization with the TFGPS01 GNSS module, which provides PPS and time pulse signals on “Payload Connector”.
| Signal | Pixhawk Color | ThunderFly Color |
|---|---|---|
| TIMEPULSE | Black | Blue |
| EXTINT | Black | Yellow |
| GPIO | Black | White |
| SDA | Black | Green |
| SCL | Black | Yellow |
| TX | Black | White |
| RX | Black | Green |
| GND | Black | Black |
Obsolete USTSIPIN02-based hardware
Original hardware was based on the USTSIPIN02 electronics and modified for use in airborne radiation research missions.