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The quality of the data collected in aeromagnetic surveys is largely dependent on the quality of compensation. Despite the outstanding sensitivity of modern magnetometers, in the absence of good compensation, anomaly signals, which fall off as the third or fourth power of distance, can be completely masked out by the interference of the nearby magnetics of the aircraft.
The aircraft's magnetic interference is related to its motions about its principal axes. A mathematical model may be built to accurately represent the aircraft's magnetic signature. Careful optimization and implementation of this model, within the framework of sophisticated hardware and firmware technologies, can lead to real-time compensation that effectively eliminates the aircraft's magnetic interference.
The RMS Instruments' AARC500 and AARC510 Adaptive Aeromagnetic Real-Time Compensators provide real-time compensation of local magnetic interference for inboard magnetometer systems in fixed wing aircraft and helicopters, to the point where the full resolution of modern high sensitivity magnetometers can be utilized. The compensation accounts for the effects of permanent magnetism, induced magnetism and Eddy currents, and also eliminates heading errors introduced by the sensors.
The ultimate in aeromagnetic compensation combined with comprehensive and flexible data acquisition and recording, the DAARC500 is a powerful, versatile and rugged instrument ideally suited to airborne and mobile geophysical and environmental survey applications.
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| AARC510 ADAPTIVE AEROMAGNETIC REAL-TIME COMPENSATOR |
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SMALL, LOW-COST, STRAP-DOWN PACKAGE
- State-of-the-art HW & FW architecture based on advanced 32-bit processors
- Proven, extremely robust compensation algorithms
- Real-time compensation of pitch, roll, yaw and headings effects – total fields and gradients
- Up to four magnetometer inputs
- Provides compensated, uncompensated and optionally, raw data
- Adaptive signal processing techniques – improved compensation and simplified calibration procedures
- Compatible with most high-sensitivity magnetometers (Cs, He, K)
- User selectable front end sampling rates, up to 1280 Hz
- Data output and recording: 10, 20, 40 Hz or external trigger
- Accurate synchronization to GPS
- Embedded GPS Receiver option (single- or dual-frequency)
- Front-end magnetometer processor: 0.32 pT resolution <0.1 pT internal system noise
- Based on a deterministic, real-time operating system
- Flexible configuration via easy to use interface
- Real-time graphical output to external display
- Compact and lightweight: 5.25” x 8.5” x 12”, under 10 lb
- Four analog inputs (optional) for radar/laser altimeter, barometric pressure sensor, etc.
- Data acquisition via Ethernet
AARC510 Aeromagnetic Real-Time Compensator Data Sheet and specifications  |
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| AARC500 Adaptive Aeromagnetic Real-Time Compensator |
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| 2nd-Generation AARC500 |
- State-of-the-art HW & FW architecture based on advanced 32-bit processors
- Proven, extremely robust compensation algorithms (AADCII)
- Real-time compensation of pitch, roll, yaw and heading effects – total fields and gradients
- Provides compensated, uncompensated and, optionally, raw data (at front-end sampling rates)
- Adaptive signal processing techniques – improved compensation and simplified calibration procedures
- Up to eight magnetometer inputs
- Compatible with most high-sensitivity magnetometers (Cs, He, K)
- User-selectable front-end sampling rates, up to 1280 Hz
- Data output & recording: 10, 20, 40, 80 Hz or external trigger
- Accurate synchronization to GPS receivers
- Front-end magnetometer processor: 0.32 pT resolution, < 0.1 pT internal system noise
- Based on a deterministic, real-time operating system: QNX 6.5 (or greater)
- Flexible configuration via easy-to-use interface (GUI) on built-in 6.5" VGA colour display (TFT LCD)
- Real-time graphical output to built-in display and/or GR33A chart recorder
- Compact and light: 19”-rack mountable, 5.25” height, under 18 lb.
- Embedded GPS receiver option (single- or dual-frequency)
AARC500 Aeromagnetic Real-Time Compensator Data Sheet and specifications |
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| DAARC500 Data Acquisition & Adaptive Aeromagnetic Real-Time Compensator |
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| 2nd-Generation DAARC500 |
- Comprehensive, flexible data acquisition
- State-of-the-art HW & FW architecture based on advanced 32-bit processors
- Based on a deterministic, real-time operating system: QNX 6.5 (or greater)
- Eight isolated RS232 serial ports (115.2 kbps), two Ethernet (10/100/1000 Mbps)
- Flexible ASCII, binary and raw serial data formats, with large buffers (> 64 KB/port)
- 16 differential/32 single-ended analog inputs
- High-resolution (16-bit), self-calibrating A/D converter
- Serial/analog/Ethernet data recording synchronized to magnetics, with time & event tags
- Accurate synchronization to GPS receivers
- Flexible and simple user interface via built-in TFT LCD and external display
- Real-time graphical output to built-in display, external display and chart recorder
- Embedded Flash memory, internal hard disk, USB-based Flash disk
- Proven, extremely robust compensation algorithms (AADCII legacy)
- Real-time compensation of pitch, roll, yaw and heading effects – total fields and gradients
- Up to eight magnetometer inputs
- Provides compensated, uncompensated and raw data (at front-end sampling rates)
- Adaptive signal processing techniques – improved compensation and simplified calibration procedures
- Compatible with most high-sensitivity magnetometers (Cs, He, K)
- User-selectable front-end sampling rates, up to 1280 Hz
- Data output & recording: 10, 20, 40, 80 Hz or external trigger
- Front-end magnetometer processor: 0.32 pT resolution, < 0.1 pT internal system noise
- Compact and light: 19”-rack mountable, 5.25” height, 19 lb.
- Embedded GPS receiver option (single- or dual-frequency)
DAARC500 Data Acquisition/Adaptive Aeromagnetic Real-Time Compensator Data Sheet and specifications |
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