How do GPS and GNSS systems support precision surveying in mining and energy?

GPS and GNSS systems support precision surveying in mining and energy by providing accurate positioning for tasks such as machine guidance, grading, dozing, drilling, collision avoidance, surveying, and fleet management in open pit mining , as well as pipeline routing and infrastructure mapping in the energy sector. Real-Time Kinematic (RTK) technology achieves highly accurate location data, typically within centimeters , transforming how these industries conduct surveying work that once required extensive manual measurements and field control points.

Key Points

• GNSS encompasses multiple satellite navigation systems including GPS, GLONASS, and Galileo, providing global positioning coverage

GNSS augmentation techniques such as DGNSS or RTK increase accuracy to the level required for mining activities

RTK uses measurements of the phase of the signal's carrier wave to provide up to centimeter-level accuracy

The oil and gas industry requires sub 5-m positioning for applications including construction, seismic surveys, pipe-laying operations, and rig moves

GNSS considerably speeds up the surveying process and reduces the time surveyors are in the field, eliminating the process of establishing field control points

Understanding GNSS and GPS Technology

While GPS (Global Positioning System) refers specifically to the satellite navigation system operated by the United States, GNSS (Global Navigation Satellite System) is the broader term encompassing all satellite positioning systems worldwide. Multi-constellation support includes GPS, GLONASS and Galileo , allowing receivers to track signals from multiple satellite networks simultaneously for improved accuracy and reliability.

Standard GPS positioning provides accuracy within several meters, which proves insufficient for precision applications in mining and energy. Differential Global Positioning Systems (DGPSs) supplement and enhance the positional data available from global navigation satellite systems, and can increase accuracy of positional data by about a thousandfold, from approximately 15 metres to 1–3 centimetres . This dramatic improvement comes from using reference stations with known positions to calculate and broadcast correction data.

The oil industry can take credit for developing DGPS, currently the most sophisticated form of GPS positioning technology available for commercial application . The demanding requirements of offshore drilling, pipeline installation, and seismic surveying drove early adoption and refinement of these precision positioning technologies.

How It Works

The most precise GNSS surveying relies on a base-and-rover configuration using Real-Time Kinematic (RTK) technology:

1. Base Station Setup: A base station is set up at a known, fixed location determined with high accuracy using surveying techniques or precise point positioning (PPP) methods, and is equipped with a GNSS receiver, an antenna, and a communication link . The base station continuously tracks signals from GNSS satellites, and because its location is known, it can calculate the errors in the satellite signals it receives .

2. Error Calculation and Transmission: The base station tracks all the satellites in view and measures their pseudoranges, computes its position and compares the computed position to its known position to generate a list of corrections needed to make the measured pseudorange values accurate for all visible satellites, then the correction data is communicated to the rover . The base station calculates errors in satellite signals caused by atmospheric and other factors and transmits corrections to the rover in real time .

3. Rover Positioning: The rover's primary function is to receive GNSS signals and correction data from the base station to calculate its precise location in real-time . This process allows the rover to adjust its position calculations dynamically, ensuring a higher degree of accuracy, with the entire process of receiving data, calculating errors, and applying corrections happening continuously .

Applications in Mining

Satellite navigation has proven a significant increase in productivity and improved on-site safety in mining activities, especially in mineral and aggregate extraction with special incidence in iron ore and coal extraction and transport tasks . The technology supports multiple critical functions:

Machine Control and Drilling: Drill rigs create holes with centimeter precision, ensuring optimal fragmentation of rock, which makes subsequent jobs like stone extraction and removal faster and easier . This precision reduces waste and improves blast efficiency.

Fleet Management: In fleet management applications, trucks can be assigned to different loading machines in real time to improve overall efficiency, with the safety benefit that the central control station always knows the location of each truck .

Safety Benefits: High precision machine control systems increase efficiency, eliminating the need to have people on the ground outside vehicles, where they are most vulnerable to accidents, and eliminate the need to deploy pegs in the field .

Applications in Energy

The energy sector relies heavily on precision GNSS for infrastructure development and monitoring:

Pipeline Surveying: A pipeline DGPS Survey is a precision method utilized to obtain the exact geographical coordinates of pipelines, with DGPS technology enhancing the accuracy of standard GPS by correcting errors resulting from signal delay due to the ionosphere and troposphere and satellite and receiver clock errors . Precise data is critical in designing and constructing pipelines, as it enables accurate mapping of the pipeline's location horizontally and vertically, helping avoid potential obstacles and reducing pipeline construction and maintenance risks .

Exploration and Development: In the oil and gas industry, DGPS is used to precisely locate exploration sites, drilling platforms, and pipeline routes . Accurate positioning proves vital for these operations in both onshore and offshore environments.

Technical Challenges and Solutions

Mining and energy operations often occur in challenging environments that can degrade GNSS performance. Difficult environments such as areas close to the magnetic equator, or to the poles can pose a challenge for GPS receivers, as these places tend to experience the most intense ionospheric scintillations, resulting from rapid fluctuations in the electron density in the ionosphere, affecting GPS/GNSS signals that travel from space to Earth causing degradation of positioning accuracy or even positioning loss .

Multipath mitigation reduces the impact of GNSS signals which are reflected off buildings or rocks, and ionospheric scintillation mitigation is designed to keep the receiver working even during ionospheric activity . Modern receivers incorporate specialized algorithms and hardware to maintain accuracy under these conditions.

For underground mining or areas with limited satellite visibility, when GNSS/GPS is unreliable in mining operations, inertial navigation systems (INS) enable vehicles and machinery to operate with higher levels of autonomy and efficiency .

Why It Matters

Precision GNSS technology fundamentally changes how mining and energy companies approach surveying and positioning tasks. Traditional surveying methods required teams to physically establish control points across project areas, a time-consuming and potentially dangerous process in active mining sites or remote energy infrastructure locations. GNSS eliminates much of this fieldwork while improving accuracy.

The economic and safety benefits extend throughout project lifecycles. In mining, precise machine control reduces over-excavation and material waste while keeping personnel away from hazardous areas. For energy infrastructure, accurate pipeline routing minimizes environmental impact, reduces construction costs, and supports regulatory compliance through reliable documentation of asset locations. As autonomous equipment becomes more prevalent in both industries, the demand for reliable centimeter-level positioning will only increase.

Related Terms

• RTK (Real-Time Kinematic): A precise positioning technology used in global navigation satellite systems to achieve highly accurate location data, typically within centimeters, by using a fixed base station and a mobile rover unit

• DGPS (Differential GPS): Networks of fixed position, ground-based reference stations where each reference station calculates the difference between its highly accurate known position and its less accurate satellite-derived position

• Base Station: The backbone of any RTK GPS GNSS system, whose primary role is to provide correction data to the rover, enabling high-precision positioning

• Rover: The GNSS measurement unit that in general is mobile , receiving corrections from the base station to calculate precise positions in the field

Frequently Asked Questions

What accuracy levels can GNSS achieve for mining and energy applications?

RTK can achieve centimeter-level accuracy, making it suitable for applications that demand high precision, and stands out as the most accurate method due to its real-time corrections, convenience, and reduced latency . For the oil and gas industry, DGPS typically provides a horizontal positional precision of 1-5 m , though RTK systems can achieve much higher precision when required.

How far can a rover operate from the base station?

RTK provides accuracy enhancements up to about 20 km from the base station . Beyond this distance, atmospheric and other errors become less correlated between the base and rover, reducing the effectiveness of corrections. For larger project areas, multiple base stations or network RTK solutions may be deployed.

Can GNSS work in all mining environments?

While GNSS performs well in open-pit mining and surface operations, underground mining presents challenges due to lack of satellite visibility. Autonomous haul trucks can grind to a halt due to frustrating GNSS/RTK dropouts and continuous miners struggle to mine accurately according to their plans without frequent stoppages to survey their progress . In these situations, inertial navigation systems or other positioning technologies supplement or replace GNSS.

Last updated: July 30, 2026. For the latest energy news and analysis, visit stakeandpaper.com.