UAV Aeromagnetic Measurement System Leave a comment

Quantum Magnetic Detector
(Quantum Magnetometer, QM) is an instrument based on the principle of quantum mechanics for measuring the size of the magnetic field. The optical pump magnetometer has the advantages of accurate measurement and high sensitivity.

Introduction to Magnetic Compensation Technology
Aeromagnetic measurement is to load a sensitive magnetometer on an airplane to detect changes in the magnetic field of underground ore bodies and geological bodies. However, due to the presence of ferromagnetic and metallic materials in the aircraft, an additional magnetic field must be generated to act on the magnetometer sensor, thereby affecting the performance of the magnetometer and the quality of magnetic measurement. The various interferences on the aircraft are far greater than the inherent noise of the magnetic measuring instrument. The purpose of aircraft magnetic compensation is to eliminate or reduce this unnecessary magnetic interference, so that the performance of the magnetometer can be brought into full play.
The core technical team of Beijing Cube comes from Harbin Institute of Technology. It has experienced the research and development of national key projects of aeromagnetic research during the entire 12th Five-Year Plan period, and has accumulated rich achievements in aeromagnetic detection technology.

From numerical simulation to semi-physical simulation to manned drones, it has undergone countless test verifications.

Aeromagnetic UAV System

The first generation of aeromagnetic drones was tested in the Tuoli area of Xinjiang in October 2019. The data was extended and compared with the data obtained by the local geological survey unit using ground magnetic detection in the same year. The data was highly consistent, and the ground was completed within 2 days. Magnetic measurement of the workload for 3 months.
At the same time, it assisted the First Academy of Aerospace in completing the task of collecting geomagnetic data at an altitude of 5,000 meters and the task of scanning the seismic fault zone of the China Earthquake Administration.

Data index:
Range: 10000~100000nT
Dynamic noise level: 0.05nT
Repeatability of measuring line: ≤1nT
Cross point repeatability: ≤0.8nT

Miniaturized cesium lamp pump magnetometer

Based on the team’s technical advantage-quantum magnetic measurement, starting from the principle, after several years of verification and optimization and process improvement, it gradually iterated a lightweight aviation magnetometer with high precision and high stability. It has the core technology and mature technology for manufacturing the atomic vapor chamber, the core component of the magnetometer, and has a top-notch testing and debugging environment.

Miniaturized high-sensitivity aeromagnetic compensator

Starting from the principle of the model, the T-L model is gradually improved and improved based on the actual flight data of a variety of manned drone platforms. At the same time, the ultra-high-precision counting module and clock synchronization technology are used to make the compensation performance reach the international leading level. It has the following characteristics:
Compact structure, small size, light weight
Suitable for installation of fixed-wing manned aircraft, helicopters, and small fixed-wing drones
Magnetometer and general data acquisition
Mature and reliable real-time compensation algorithm (independent research and development, after multiple verification)
-Adaptive signal processing technology improves the compensation effect and simplifies the modeling process of compensation coefficients
-At the same time, it has the functions of real-time data processing and post-processing
–Dynamic compensation of airborne electronic system (OBE compensation)
An external monitor can be used to display the system operation interface
Optional 1-4 analog input channels, which can be connected to radar altimeter, laser altimeter or barometer, etc.
Complete monitoring and control through any Windows platform (through the network port or remote control through the Internet)
Suitable for manned aircraft, gliding delta wings, fixed-wing drones, unmanned helicopters, airships and other aircraft.

Industry Application

By analyzing the distribution of regional magnetic fields, it provides analysis basis for mining companies such as oil, gas, and mineral deposits. Compared with traditional geophysical exploration methods, the detection efficiency and accuracy are greatly improved.
Extract weak seismic information from the geomagnetic background field noise, and provide scientific research equipment for research institutions and universities.

Military field-passive detection methods can more truly reflect the magnetic properties of the target and environment to be measured
Detection of duds and mines
Aeromagnetic Big Data Promotes the Application of “Not Relying on GPS Navigation Technology”

Search for sunken ships, aircraft wreckage, etc.
Ancient ruins survey

Aeromagnetic detection has always been in a relatively cold position at home and abroad due to its complex technology and high test costs. It is difficult for a technical team to enter this technical field in a short period of time.
In addition, aeromagnetic exploration is an industry with relatively stable channels due to specific application directions and user groups. Jingfang’s magnetic compensation technology and products have been awarded by the Ministry of Land and Resources Navigation Center, Nuclear Industry Aerospace Center, and Geochemical Exploration Institute Recognition by authoritative units.
Currently in the explosive period of the integration of new technologies, aeromagnetic technology + UAV will become a breakthrough in the magnetic exploration industry, breaking the traditional pattern of production methods. The industry changes brought about by new technologies also bring us more business opportunities and benefits.