For gamma-ray spectrometry, Prospectair is using the industry leading technology Radiation Solution RS 500, coupled with IRIS, a real time data acquisition and navigation system specifically designed for airborne geophysics applications. It is equipped with precise Satellite navigation, includes real-time display of helicopter path over a geographical image for ease of navigation, and provides reliable data graphics for real time QA/QC purposes.

Airborne Spectrometer

Model Radiation solution RS-500 Airborne Gamma Ray Spectrometer
Channels: 1024
Differential nonlinearity: <0.2% over top 99.5%
Integral nonlinearity: <0.01% over top 99.5%
Zero dead time: 0
Baseline restoration: Digital (IPBR)
Pulse shaping: Digital (AOPS)
Pile-up rejection: Digital (<40nS)
Pile-up contamination: <1% @ 250kcps
Sample rate: .01-10 sec-1
Timing: Internal/External
Gain stabilization: Automatic multi-peak
I/O: Ethernet, RS-232 19200-115200 bit/s, USB memory stick
Operating Temp.: -30ºC to +45ºC
Radar Altimeter

Model Terra TRA3000/TRI-40 radar altimeter
Operating range 40 – 2 500 feet (12.2 – 762 m)
Accuracy 1 ft (0.3 m)
Sampling rate digital record of 1 Hz
Navigation system

Model T.H.E.M. Geophysics Navigation System
GPS: OmniSTAR Differential Global Positioning System (DGPS) 12-channels
Real-time position accuracy: ± 2 m
Sampling rate: 30 Hz
Barometric pressure sensor

Model Sensotec Model Z
Operating range: 10.5 – 15.5 psia (0 – 1070 mbar)
Accuracy: ± 0.25 %
Sampling rate: 30 Hz
Temperature and Humidity sensor

Model Vaisala HUMICAP HMT100
Operating range: -40 to +80°C
Accuracy: ± 0.2°C
± 1.7% relative humidity
Sampling rate: 30 Hz
Data Acquisition

  • Collected data synchronized by GPS time signals
  • GPS sampling rate up to 5 samples per second
  • High level of data integrity
  • Real time graphical data presentation
  • Single file data format
  • Data transfer via USB drive
  • Optional Outputs
    • Video overlay information
    • Digital video flight path recording system

  • Pilot Guidance Graphics Unit (PGU)
  • Pilot indicator - 2 line navigation display
  • Operator information
  • Georeferenced map underlay
  • UTM, UPS, Lambert support
  • Drape flight surface
  • Navigation Modes
    • Survey
    • Trace
    • Chase
    • Plum