Both RTK and PPK offer centimeter-level accuracy, but they serve different needs and workflows. Understanding the differences will help you choose the right approach for your specific applications.
RTK provides real-time positioning corrections, delivering centimeter-level accuracy instantly. Corrections are transmitted from reference stations to your receiver via radio, cellular, or internet connections.
• Immediate results in the field
• Requires real-time communication
• Ideal for surveying and construction
PPK processes raw GNSS data after collection, applying corrections during post-processing to achieve high accuracy. No real-time communication is required during data collection.
• Process data after collection
• No communication required in field
• Perfect for drone mapping and remote areas
RTK is ideal for:
Surveying and Layout: When you need immediate positioning for stakeout and verification
Construction: Machine control systems requiring real-time guidance
Interactive Mapping: Applications where immediate feedback is crucial
Quality Control: Instant verification of measurements and positions
Time-Critical Projects: When delays for post-processing aren’t acceptable
• Immediate results and field verification
• Simplified workflow with no post-processing
• Real-time quality assurance
• Perfect for interactive applications
• Dependent on communication links
• Higher operational costs
• Limited by network coverage
• Vulnerable to communication interruptions
PPK is ideal for:
Drone Mapping: Aerial surveys where post-processing is standard workflow
Remote Areas: Locations without reliable communication infrastructure
Large Area Mapping: Extensive surveys where post-processing is more efficient
Research Projects: Applications requiring detailed analysis of positioning data
Cost-Sensitive Projects: When minimizing operational costs is important
• Works in any location
• Lower equipment and operational costs
• Improved data quality through careful processing
• Better handling of challenging conditions
• Delayed results requiring post-processing
• More complex workflow
• No immediate field verification
• Requires technical expertise for processing
Many modern applications benefit from combining both methods:
Choose RTK if you need:
• Immediate positioning results
• Real-time quality control
• Interactive field applications
• Simplified workflows
Choose PPK if you need:
• Remote area capability
• Lower operational costs
• Flexible processing options
• Research-grade accuracy
Our directory includes providers supporting both RTK and PPK solutions. Browse our list of GNSS correction providers to find the right technology and service for your specific needs.