The Xcite™ system provides a superior and efficient alternative to all prior HTDEM technologies for the minerals exploration and geoscience mapping community.



Xcite™ is a new generation of helicopter-borne time-domain electromagnetic (HTDEM) systems, developed by New Resolution Geophysics (NRG™). By incorporating the latest new-age, high speed electronics and sophisticated aeronautical engineering, New Resolution Geophysics (NRG™) has developed the next generation HTDEM system. The Xcite™ system provides a superior and efficient alternative to all prior HTDEM technologies for the minerals exploration and geoscience mapping community.

Key features of the system include:

  • Innovative patented loop design
  • Exceptional signal/noise
  • Logistically superior in setup and shipping
  • Excellent depth of investigation
  • Performance in both early and late time
  • 460μs switch off time

A patented inflatable bird has been developed as a carrier for the system. The transmitter loop diameter is approximately 20 metres resulting in a programmable output power of up to 372,000 NIA. The inflatable structure supports different loop sizes, thereby providing system output powers that are far greater or smaller, depending on the requirements of each survey.

The inflatable bird design was selected for several reasons, including:

  • Ultra compact size when deflated, resulting in optimal logistics in shipping. The direct result being reduced mobilisation costs.
  • Fast set up time of approximately 4 hours
  • The ideal combination of a robust structure, with flexibility while retaining a constant shape in flight, resulting in a stable and damped receiver platform.
  • Minimal interference from microphonic noise.
  • Less prone to damage than a conventional rigid or semi-rigid system.
  • Extremely stable flight characteristics.
  • Field repairable
  • Innovative design

The Xcite™ HTDEM system has many benefits such as:

  • All raw, streaming data is recorded.
  • Time gates are selected post flight, thereby ensuring that the system data presentations can be tailored for all target or application requirements.
  • Rapid setup time of only 4 hours for a complete system installation.
  • Mobilisation costs are reduced due to the compact size of the system when deflated.
  • The shock absorbing qualities of the frame results in a perfectly damped platform producing extremely quiet data.
Electromagnetic System
Sensor ConfigurationCoincident Tx-Rx
StructureFully inflatable frame
Aircraft TypeAS350B Series
Engine TypeTurbine
Fuel TypeJetA1
Number of turns4
Current220 A (up to 350A)
Dipole Moment250,000 NIA (up to 372,000 NIA for 5 mspulse)
Base Frequency25Hz or 30 Hz Base Frequency programmable waveform
WaveformTypically between 4 – 7ms on-time with 16 to 13ms off-time
Number of turns100
OrientationZ axis
ConfigurationConcentric to Tx
SamplingDigitally at 624kbps
RecordingDigitally at 156kbps
Time gatesAdjustable Rx gates extracted from streamed data; typically 42 gates
Time gate windows0.05 ms to > 12ms
& integrated B-field
Acquisition System
CPUDual Core ARM 1.5Ghz
Operation Temperature-10 to 65 Degrees C
Standard Sampling Rate20 Hz (capable of >1kHz)
Magnetometer Counter
Internal System Noise<0.0001 nT
Adc Inputs24
Magnetometer Inputs4
Recording Rate20 Hz (capable of >1kHz)
Magnetometer Sensor
TypeSingle Sensor Scintrex CS3
Measurement Range15 000 – 105 000 nT
Gradient Tolerance40 000 nT/m
Operating Temperature-40 to +50 Degrees C
Recording Rate20 Hz (capable of >1kHz)
Fluxgate Magnetometer
Analogue output+- 10 V
Linearity error<0.0015%
Calibration accuracy-0.005
Bandwidth0.3 kHz
Internal noise<6 pTrms/ Hz @1Hz
Recording rate20 Hz (capable of >1kHz)
Field Data Verification System
Processing Software PlatformsGeosoft Oasis Montaj and Proprietary Software
Base Station Magnetometer
ManufacturerNRG Engineering
Range15 000 to 105 000nT
Sensitivity Recording Rate0.0006 nT Hz RMS 1Hz
GPS Positioning
TypeNovatel DL-V3L1L2
Differential CorrectionReal Time
Code TrackedC/A
Number of Satellites12
Recording Rate20 Hz
Pressure Resolution0.001 mb
Operating Pressure  Range600 – 1060 mb
Recording Rate20 Hz (capable of >1kHz)
Resolution0.05 DegC
Accuracy0.1 DegC
Recording Rate20 Hz (capable of >1kHz)
Radar Altimeter
TypeFree Flight
Operating range0 – 762 m
Accuracy 0 – 10 m+-0.3m
Accuracy 10 – 762 m+-0.5m
Recording rate20 Hz (capable of >1kHz)
Laser Altimeter
Range0 – 60 m
Recording rate20 Hz (capable of >1kHz)

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