Every survey in Dubai ultimately traces back to a network of precisely known coordinates — known as control points. GNSS (Global Navigation Satellite System) surveying is how these control networks are established, and it underpins the accuracy of every topographic, setting-out and as-built survey that follows.
Static vs RTK GNSS Survey
| Method | Accuracy | Best For |
|---|---|---|
| Static GPS | ±5mm or better | Primary control networks, geodetic reference points |
| RTK (Real-Time Kinematic) | ±10–20mm | Topographic detail, fast point collection |
| PPK (Post-Processed Kinematic) | ±10–15mm | Drone ground control, mobile mapping |
Static surveys involve leaving a GNSS receiver stationary over a point for an extended period (30 minutes to several hours), then post-processing the data against reference stations. RTK surveys use a base-and-rover setup or a network correction service to get instant centimetre-level positions in real time — ideal for fast-paced topographic and setting-out work.
Why Control Networks Matter
Every subsequent survey on a project — topographic, setting-out, as-built — references back to the control points established at the start. If the control network is wrong, every survey built on top of it inherits that error. This is why Fortress Surveying always verifies existing control or establishes new control to UAE National Network standards before any other fieldwork begins.
Equipment We Use
- Leica GS18 GNSS receiver — ±3mm+0.5ppm horizontal RTK accuracy
- Trimble R12 GNSS receiver — ±4mm+0.5ppm horizontal RTK accuracy
- Leica Infinity & Trimble Business Center for static network processing
Cost of GNSS Survey in Dubai
Pricing depends on the number of control points and accuracy required. Contact us with your project scope for a fixed-price quote within 2 hours.
Need GNSS Control Survey in Dubai?
Static and RTK control networks referenced to UAE National Geodetic Network. Get a fixed-price quote within 2 hours.
Frequently Asked Questions
What is the difference between GPS and GNSS?
GPS is the American satellite system; GNSS is the umbrella term covering GPS plus other systems like GLONASS, Galileo and BeiDou. Modern survey receivers use GNSS to access more satellites simultaneously, improving accuracy and reducing observation time.
How long does a static GPS observation take?
Typically 30 minutes to 2 hours per point depending on required accuracy and satellite geometry at the time of observation. Longer sessions generally produce tighter accuracy.
Can RTK survey be used for DM submissions?
Yes, provided the RTK base is referenced to a verified control point and the resulting coordinates are in WGS84 / UTM Zone 40N as required by Dubai Municipality.