What's workflow Drone Magnetic Surveys?

What's workflow Drone Magnetic Surveys?

Through meaure changes in the Earth's magnetic field to deduce the causes of magnetic anomalies,Aeromagnetic survey provides a basis for identifying underground mineral resources or other exploration targets.

Drone magnetic surveys mostly adopts light fixed-wing, composite-wing and multi-rotor UAVs as load platform.

Drone magnetic surveys sampling point distance is 0.5-2.3m, and survey depth is large.

It is mainly applied to detect the target body with magnetic difference, and plays an important role in iron and polymetallic mineral exploration, basic geological research, and is also an auxiliary means for oil and gas, uranium mine, geological engineering and urban geological investigation.

Detailed Steps about Drone magnetic surveys

I:Instrument Preparation and Testing

II:Project Deployment

III:Field Operations

IV:Data Preprocessing

V:Data Processing and Map Preparation\

VI:Data Interpretation and Report

I:Instrument Preparation and Testing

What equipment need for drone magnetic surveys?

1.Unmanned Aerial Platforms

2.Ground Control Station

3.Airborne Magnetometer Measurement System

4.Magnetic Sunset Base Station

5.System Installation and Integration

Mainly testing before field working

1.Airborne Magnetometer Static Test

2.Magnetic Sunset Base Station Static Test

3.Differential Direction Flight Logistic Test

II:Project Deployment

1.Data collection and survey

2.Determination of survey area boundaries

3.Distribution of survey area and pivot circle

4.Layout of survey lines

5.Flight altitude

6.Flight Mode

7.Temporary landing site

8.Position of solar variation station

9.Physical Parameter Measurement Deployment

III:Field Operations

What’s detailed before flying works?

1.Test flights

2.Line Planning

3.Flight simulation

4.Flight Programming

Detailed field working steps

1.Main test line flight

2.Drawing line flight

3.Repeat line flight

4.Magnetic day-variation observation

5.Measurement of physical parameters of rock (ore)

IV:Data Preprocessing

What preprocess before mapping?

1.Altitude statistics

2.Yaw statistics

3.Dynamic Noise Statistics

4.Magnetic day-variation statistics

V:Data Processing and Map Preparation

Data checking

Coordinate conversion

Data correction

Data filtering (noise reduction)

Polarization, upper extension, vertical der

ivative, horizontal gradient mode

Base artwork, conversion artwork

VI:Data Interpretation and Report

1.Regional magnetic field and local magnetic field interpretation

2.Selection of local anomalies and qualitative and quantitative interpretation

3.3D inversion and geologic modeling and anomaly classification

4.Inferred interpretation mapping and report preparation