CHC Navigation has rolled out a coordinated upgrade across its mid to high tier GNSS receiver lineup, targeting one of the most persistent challenges in field positioning: maintaining stable accuracy outside ideal network conditions. The update affects the i93, i85, i76 rover receivers and the iBase base station, introducing changes that go beyond incremental improvements and instead focus on operational reliability, faster deployment, and reduced dependence on infrastructure.
From a positioning systems perspective, this release is less about headline accuracy gains and more about consistency under real world constraints, which is where most GNSS workflows either succeed or fail.
StellaX GNSS chip improves RTK stability in obstructed environments
At the core of the update is the integration of the CHCNAV StellaX GNSS chip across the i93, i85, and i76 models. The chip is designed for multi frequency, multi constellation tracking, combined with enhanced interference mitigation.
In practical terms, this directly targets performance in environments where RTK typically degrades: partial sky visibility, urban obstructions, tree canopy, and multipath conditions. While most modern receivers already support multi frequency tracking, the differentiator here is signal stability rather than raw capability.
This matters because in surveying workflows, the cost is not just losing a fix, but the time spent reinitializing it. Improvements in continuity can translate into measurable productivity gains, especially in topographic surveys, construction layout, and corridor mapping.
PointSky satellite corrections reduce reliance on cellular RTK networks
One of the more strategically important additions is the bundled one year subscription to PointSky for the i93 and i85 receivers. This service delivers GNSS corrections via satellite, removing the dependency on NTRIP over cellular or UHF radio links.
CHCNAV claims users can achieve 2.5 cm level accuracy within three to five minutes of convergence. While that convergence window is still longer than traditional RTK initialization, the trade off is independence from local infrastructure.
This positions PointSky as a PPP RTK or SSR based alternative, particularly relevant for:
- Remote surveying in mountainous or forested regions.
- Large scale projects where base station logistics are inefficient.
- Cross border operations where CORS access is limited or inconsistent.
The key implication is operational flexibility. Survey crews can maintain centimeter level positioning without needing to plan around network coverage, which has historically been a bottleneck in many regions.
iBase GNSS base station extends radio coverage up to 30 km for linear projects
On the base station side, CHCNAV has focused on extending usable range and simplifying deployment. The updated iBase integrates DistLink communication technology alongside improved data compression.
The result is a claimed radio coverage of up to 30 km, which is particularly relevant for linear infrastructure projects such as highways, pipelines, and railways where maintaining a single base station over long distances reduces setup complexity.
Battery performance has also been optimized, with more than 13 hours of continuous operation. This aligns with full day field workflows without requiring external power solutions.
Just as important is the one button startup process with automatic rover pairing. While this may sound minor, it addresses a real friction point in GNSS operations: configuration errors and setup time. Reducing manual input lowers the skill threshold required for deployment and minimizes downtime in the field.
What these updates mean for real world GNSS workflows
Taken together, these upgrades reflect a clear direction: reducing dependency on external variables.
Instead of chasing marginal accuracy improvements, CHCNAV is focusing on:
- Stability of RTK fixes in difficult environments.
- Independence from cellular and radio infrastructure.
- Faster and simpler field deployment.
- Extended operational range for base rover setups.
This aligns with broader trends in GNSS, where hybrid positioning models combining RTK, PPP RTK, and inertial integration are becoming standard.
From a competitive standpoint, CHCNAV continues to position itself as a cost effective alternative to premium brands, but with increasingly comparable technical capability. The inclusion of satellite corrections as a standard bundle is particularly notable, as it lowers the barrier for adopting infrastructure independent workflows.
About CHC Navigation
CHC Navigation is a global provider of geospatial and positioning technologies headquartered in Shanghai, China. According to the company’s official overview page, CHCNAV has over 2,200 employees and a network of distributors in more than 140 countries. The company develops GNSS, mapping, marine, and navigation solutions for surveying, construction, agriculture, and other professional applications.
