What is CORS and How It Improves GPS Survey Accuracy in India
Setting up a physical base station for every DGPS survey works, but it takes time and an extra crew member. Continuously Operating Reference Stations solve this differently: permanent, always-on GPS receivers that stream correction data over the internet, available to any surveyor within range, all day, every day.
How CORS Actually Works
CORS vs Traditional Base + Rover Setup
- Requires 2-person crew minimum
- Base station must stay on site all day
- Limited range from base (typically under 20km)
- Extra equipment cost and setup time
- Single surveyor can work independently
- No physical base station needed on site
- Coverage wherever network stations exist
- Just needs mobile internet connectivity
Think of each connected dot as a CORS station. Move your mouse to see how a distributed correction network behaves.
India's CORS Infrastructure
Multiple CORS networks now operate across India, including systems from the Survey of India and state-level infrastructure. Coverage is strongest in developed regions and expanding steadily. Where CORS signal is unavailable or unreliable, a traditional local base station remains the dependable fallback.
For projects in remote areas without solid mobile network coverage, we still deploy physical base stations as part of our DGPS and RTK survey services, ensuring consistent accuracy regardless of network availability.
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