_{RTK vs. PPK: Which High-Precision GPS Technology is Right for You?}

In industries like land surveying, construction, and precision agriculture, accuracy isn’t just a goal—it’s the foundation of the entire project. Standard GPS can get you to the right street, but when you need to operate with centimeter-level precision, you step into the world of high-precision GNSS. The two leading technologies in this space are Real-Time Kinematic (RTK) and Post-Processed Kinematic (PPK).
Choosing between them can feel daunting, but it often boils down to a simple question: Do you need perfect accuracy right now, in the field, or can you wait for even greater reliability after the fact? Think of it like a live news report versus a polished documentary. RTK is the live broadcast, giving you immediate results, while PPK is the documentary, meticulously edited in post-production for maximum accuracy.
This article breaks down the core differences, pros, and cons of RTK vs. PPK—and highlights the importance of pairing these technologies with robust modules like Telit Cinterion and high-performance Sunnyway antennas.

Head-to-Head: A No-Nonsense Comparison
At their core, both RTK and PPK aim for the same thing: correcting errors from satellite signals and delivering centimeter-level accuracy. The key difference is when those corrections happen.

Accuracy: Is There a Clear Winner?
Both technologies deliver survey-grade results. PPK often has a slight edge in absolute accuracy since all data is processed after the mission is complete, overcoming temporary signal interruptions. RTK, meanwhile, offers real-time corrections with about 2–3 cm accuracy in ideal conditions.
But regardless of RTK or PPK, hardware quality is decisive. A precision system is only as strong as its GNSS module and antenna.
- Telit Cinterion SE868K5-RTK is a prime example of a GNSS receiver module engineered for industrial-grade performance. With advanced immunity against interference from nearby radios and cellular networks, it ensures reliable centimeter-level accuracy even in challenging environments.
- Sunnyway antennas complement this by delivering excellent signal strength and coverage. Their high-quality external antennas provide the clean signal input necessary for both RTK and PPK to achieve full potential. Together, Telit and Sunnyway form a foundation for consistent, high-precision results.

Workflow and Speed: Instant Gratification vs. Calculated Perfection
- RTK (Real-Time Kinematic): Delivers corrected positions instantly. Ideal for construction stakeouts, precision agriculture, or real-time drone navigation.
- PPK (Post-Processed Kinematic): Requires an extra processing step after data collection but delivers maximum reliability in complex environments.

Reliability: The Achilles’ Heel of Real-Time
RTK depends on a constant communication link between base and rover. If the signal drops, accuracy is lost. PPK avoids this by only requiring raw data logging, making it more robust in forests, urban canyons, or large survey areas.This is where Telit Cinterion’s interference-resistant modules shine. Combined with Sunnyway’s antennas, which maintain strong satellite connections even in obstructed environments, they mitigate many reliability risks that traditionally challenge RTK systems.

When to Choose RTK
- Construction & Surveying: Immediate placement checks on-site.
- Precision Agriculture: Real-time tractor guidance.
- Drone Navigation: Following precise flight paths.
- Time-Critical Operations: Emergency response or disaster relief.

When to Choose PPK
- Large-Scale Drone Mapping: Where real-time signals can’t be maintained.
- Challenging Environments: Forests, cities, remote sites.
- High-Stakes Projects: Legal surveys where data must be verifiable.
- BVLOS Drone Flights: Long missions without a stable communication link.

The Future is Hybrid
Many modern GNSS solutions combine RTK and PPK. They log raw data for post-processing while providing real-time corrections, ensuring no data is lost if the link drops. Technologies like PPP (Precise Point Positioning) and 5G integration will further expand options.
‍
Conclusion: Build on Solid Foundations
Choosing between RTK and PPK is important, but your success depends even more on the underlying hardware. Telit Cinterion GNSS modules provide industrial-grade precision and interference resilience, while Sunnyway antennas ensure robust signal reception in demanding conditions.
With over 25 years of experience, Round Solutions integrates these components into complete solutions tailored for Industry 4.0, IoT, and automation projects. The right technology, combined with trusted hardware partners, guarantees the accuracy and reliability your mission depends on.