GNSS corrections are only useful if they remain stable throughout a mission. Drifting corrections, signal loss, and interference can turn a high-precision receiver into a liability. The Septentrio mosaic-H GNSS receiver solves this with advanced signal processing that keeps corrections locked and stable.
Here is how the mosaic-H delivers the correction stability that demanding applications require.
Multi-Frequency Multi-Constellation Foundation
Stable GNSS corrections start with broad access to satellite signals. The mosaic-H tracks GPS, GLONASS, Galileo, BeiDou, and QZSS across multiple frequency bands. This diversity provides the redundancy needed to maintain correction integrity when individual signals weaken or drop out.
If a satellite sets below the horizon, the receiver smoothly hands off to another satellite from a different constellation. There is no position jump or correction dropout. The mosaic-H’s seamless multi-constellation tracking ensures continuity that single-system receivers cannot match.
AIM+ Technology for Correction Integrity
Interference is the enemy of stable corrections. The mosaic-H includes the full Septentrio AIM+ suite for advanced interference mitigation. AIM+ detects jamming signals, analyzes their characteristics, and cancels them while preserving genuine GNSS signals.
This is critical for GNSS correction stability. A momentary jamming pulse can corrupt RTK correction streams, causing the receiver to lose its fixed solution. AIM+ prevents this by filtering out interference before it reaches the correction processing pipeline.
Visit our AIM+ resilient GNSS page for technical details on this technology.
APME+ Multipath Mitigation
Multipath errors, where satellite signals bounce off buildings or terrain before reaching the receiver, are a primary cause of correction instability. The mosaic-H includes APME+ (Advanced Multipath Estimation) technology to address this.
APME+ analyzes the correlation function of each satellite signal to detect multipath distortion. It applies corrections at the measurement level, removing the effect of reflected signals. The result is a clean carrier-phase measurement that maintains a stable RTK fix even in reflective environments.
Fast Re-Convergence After Correction Loss
Sometimes correction loss is unavoidable. A drone flying behind a mountain or through a tunnel will temporarily lose its correction link. The mosaic-H’s fast re-convergence technology minimizes the impact.
When corrections are restored, the mosaic-H re-establishes a fixed RTK solution in seconds. This rapid recovery ensures minimal data gaps and keeps missions on track. For surveyors paying by the flight hour, every second of re-convergence saved is money earned.
Correction Input Flexibility
The mosaic-H supports multiple correction input formats including RTCM 3.x, CMR, and proprietary formats. It can accept corrections via radio link, cellular modem, satellite L-band, or internet NTRIP. This flexibility ensures the receiver can maintain corrections regardless of the available network infrastructure.
For operations in remote areas where NTRIP is unavailable, L-band corrections provide satellite-delivered correction streams directly to the receiver. The mosaic-H handles automatic failover between correction sources, ensuring uninterrupted stable positioning.
Cross-Link to Related Content
Read about the Septentrio anti-jamming GNSS technology for drones. Our HB6 GNSS box receiver demonstrates the mosaic platform in a ruggedized enclosure.
Browse all GNSS solutions at uav-gnss.com or explore EV322 receiver specs.
External Reference
For official specifications of the mosaic-H module, consult the Septentrio GNSS receiver product page. The GPS.gov portal provides technical resources on GPS modernization and correction standards.
