What Is the GD350 UAV Magnetic Survey System?

If you work in geophysics, mining, or utility detection, you know how important accurate magnetic surveys are.

Unlike traditional ground surveys (which are slow and labor-intensive), this system attaches to a DJI M300 RTK drone, letting you cover large areas quickly while collecting high-resolution magnetic data.

How Does It Work?

The system uses two advanced sensors:

1. Miniature Rubidium Optical Pump Magnetometer (OPM) – Measures the Earth’s total magnetic field with extreme sensitivity (20 pT/Hz).

2. 3-Axis Fluxgate Magnetometer – Detects magnetic field direction (X, Y, Z axes) with minimal noise (<20 pT/√Hz).

These sensors are mounted on a carbon fiber pole, keeping them 1.5 meters away from the drone’s electronics to avoid interference.

The Data Acquisition Module (DAQ) processes readings in real time, correcting for drone-induced magnetic noise, and sends data wirelessly (10Hz update rate) to a ground station.

Key Benefits for Professionals

✔ Lightweight & Portable (1.5 kg) – Easy to carry and install on a DJI M300 RTK.
✔ High-Accuracy Sensors – Detects even tiny magnetic anomalies for precise mapping.
✔ Real-Time Data Correction – Removes errors caused by the drone’s motors and electronics.
✔ Terrain-Following Flight Planning – Adjusts altitude automatically using DEM data for consistent results.
✔ Long Flight Time (55 min) – Survey large areas in one go without frequent landings.

Who Can Use This System?

• Mining Companies – Find mineral deposits faster and cheaper.

• Archaeologists – Locate buried relics without excavation.

• Utility Inspectors – Detect underground pipes and cables safely.

• Researchers – Study geomagnetic changes with high-resolution data.

Technical Breakdown

OPM Magnetometer

• Measures: 1,000–100,000 nT

• Works in: -30°C to +60°C (no calibration needed)

• Extremely Low Power: Only 2W during operation

Fluxgate Magnetometer

• Measures 3D magnetic fields

• Noise Level: <20 pT/√Hz (after 15-min warm-up)

• Compact & Light: 70g sensor weight

Data Acquisition Module (DAQ)

• 4-Core ARM Processor – Handles real-time calculations.

• 24-bit ADC – Ensures high-resolution data logging.

• USB & Wireless Output – Flexible data storage options.

Compatible with DJI M300 RTK

• Max Speed: 23 m/s (in Sport Mode)

• RTK GPS Accuracy: ±1.5 cm

• Wind Resistance: 8 m/s

Why This System Beats Traditional Methods

Faster Surveys – Drones cover 10x more area per hour than ground crews.
More Accurate – Real-time corrections eliminate drone interference.
Cost-Effective – Reduces labor and equipment costs.
Easy to Use – No PhD required—just attach, fly, and analyze.

Chongqing Gold Mechanical Electrical Equipment Co. Ltd. has been actively involved in the design, development, and manufacturing of geophysical exploration equipment for over four decades. Our expertise encompasses various techniques used to capture images and map subsurface features and structures such as minerals, oil and gas reservoirs, groundwater, and geological formations.

At present, our company manufactures a diverse range of equipment that encompasses resistivity meters, seismic receivers, magnetic instruments, borehole loggers, and various other geophysical sensors. Additionally, we offer geotechnical instruments such as pile testers and drilling machines.

In collaboration with geologists, geophysicists, and other domain experts, we design and develop instruments that cater to the unique requirements of our clients. To maintain our leading edge in the market and keep up with technological progress and scientific advancements, we continuously invest in research and development to ensure that our equipment is accurate, reliable, and efficient.