GNSS receivers are special tools used in modern land surveying by professionals who require the highest level of precision. These advanced RTK GNSS systems provide real-time corrections, delivering centimeter-level accuracy for a wide range of surveying applications. Whether you are working on mapping infrastructure, conducting topographic surveys, or preparing land for development, a reliable GNSS receiver ensures optimal performance no matter the environment you are working in.
What is an RTK GNSS Receiver?
An RTK GNSS receiver significantly improves positioning accuracy by utilizing real-time correction data from a fixed base station or a network. RTK, short for Real-Time Kinematic, unlike traditional GPS systems, offers accuracy within a few meters, while on the other hand, RTK GNSS receivers refine positioning down to just a few millimeters. It does this by leveraging multiple satellite constellations and a network of fixed stations, including GPS, GLONASS, Galileo, and BeiDou, these receivers provide exceptional reliability in even the most challenging conditions. With the help of a mobile receiver, one can use these corrections to calculate the exact position position relative to the fixed station.
Why RTK GNSS Receivers Are Essential for Surveying?
RTK GNSS receivers have become indispensable for modern land surveying and are used by most professional land surveyors, civil engineers, and construction professionals. It is mainly due to their numerous advantages that count the following:
-
Cadastral and boundary surveys – Accurately defining land ownership and property lines.
-
Infrastructure mapping – Locating utilities such as pipes, cables, and underground structures.
-
Topographic surveys – Capturing the natural landscape for environmental and engineering projects.
-
Construction site preparation – Ensuring precise positioning for roads, buildings, and large-scale projects.
How GNSS Receivers Work?
GNSS receivers function by collecting satellite signals from multiple global navigation systems and applying real-time corrections to determine precise positioning. The system includes:
-
Base Station: A fixed reference point that transmits correction data.
-
Rover: A mobile GNSS receiver that applies correction data for real-time positioning.
-
RTK Network: A network of continuously operating reference stations (CORS) that provide real-time correction data.
-
IMU (Inertial Measurement Unit): Some advanced receivers integrate IMU technology to maintain accuracy even when the antenna is tilted.
-
UHF and Cellular Connectivity: RTK GNSS receivers utilize UHF radio and cellular networks to receive and transmit correction data efficiently.
Satellite Constellations Supporting GNSS Receivers
GNSS receivers leverage multiple satellite constellations to improve accuracy, reduce signal loss, and ensure uninterrupted positioning. GPS is just one of them, and advanced GNSS tools have the power to use more of them, including the following:
-
GPS (Global Positioning System) – The most widely used satellite system developed by the U.S.
-
GLONASS – The Russian satellite navigation system that enhances positioning in high-latitude regions.
-
Galileo – The European GNSS system providing additional signal redundancy and accuracy.
-
BeiDou – The Chinese satellite system offering global coverage and high-precision signals.
-
QZSS (Quasi-Zenith Satellite System) – A regional system supporting GNSS positioning in the Asia-Pacific region.
-
SBAS (Satellite-Based Augmentation Systems) – Including WAAS, EGNOS, and MSAS, which improve GPS signal accuracy and reliability.
Advantages of Using RTK GNSS Receivers
As you can probably assume, there are multiple advantages that RTK GNSS receivers have in terms of land surveying. Besides allowing you to get the most accurate and precise results, it also allows you the following:
-
Real-Time Accuracy: Achieves centimeter-level positioning instantly.
-
Multipath Mitigation: Reduces signal interference from buildings, trees, and other obstructions.
-
Reliable Performance: Works in extreme weather and challenging terrains.
-
Enhanced Productivity: Increases efficiency and reduces survey time in the field.
-
Remote Accessibility: Enables surveyors to work in difficult-to-reach areas with minimal setup time.
-
Automation Compatibility: Integrates with machine control systems for automated construction and precision farming applications.
Do You Need a GNSS Rover or a Base Station?
Choosing between a GNSS rover-only setup and a GPS rover with a base station depends on the availability of an RTK network in your region. Picking between the two will depend on multiple factors, so only you can make that decision based on the needs of your project.
-
GNSS Rover with RTK Network: Best for urban environments and areas with strong RTK network coverage. The rover receives real-time RTCM corrections, ensuring centimeter accuracy without the need for a separate base station.
-
GNSS Base & Rover Setup: Essential when working in remote locations without RTK network access. The base station provides localized RTCM correction data to the rover via UHF radio, ensuring high precision even in areas with weak GNSS signals.
Get the Best GNSS Receiver for Your Surveying Needs
Investing in a high-quality RTK GNSS receiver ensures greater accuracy, efficiency, and reliability in all surveying projects. Whether mapping infrastructure, conducting land surveys, or integrating GNSS technology into automation systems, a well-selected receiver will significantly enhance performance and allow you to finish your land surveying projects efficiently.
Browse our full collection of GNSS receivers to find the best solution for your surveying needs!
