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Application

GNSS Deformation Monitoring for Slopes, Dams and Structures

GNSS deformation monitoring needs a stable reference station, unattended monitoring points and continuous, repeatable positions. Eview supplies the HB62 rugged base as reference, the HBEV11 smart antenna and HB56 receiver as monitoring points and the IP67 EV288 antenna, powered by Septentrio modules with AIM+ anti-jamming and raw data logging.

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0.6 cm
RTK accuracy + 0.5 ppm (H)
1 cm
RTK accuracy + 1 ppm (V)
64 GB
Logging on the HB62 reference
IP67
HB62 and EV288 housings
What monitoring needs

What a GNSS monitoring system needs

Reference and monitoring points
A stable reference station outside the moving zone sends corrections to monitoring points on the structure, so every point is measured against the same fixed base around the clock. See RTK positioning.
Repeatable RTK positions
RTK accuracy of 0.6 cm + 0.5 ppm horizontal and 1 cm + 1 ppm vertical. Short baselines between reference and monitoring points keep the distance-dependent ppm term small and results consistent.
Raw data for reprocessing
Logging raw observations lets engineers reprocess time series and check events after the fact. Septentrio SBF converts to RINEX for your processing software. See NTRIP, RTCM and RINEX.
Multipath control
Dam walls, steel structures and rock faces reflect satellite signals. APME+ reduces multipath errors in the receiver, and careful antenna siting with a clear sky view does the rest. See how to reduce multipath.
Unattended operation
Monitoring runs for months or years. The HB62 has an IP67 housing, 9–36 V input and 64 GB logging, and the EV288 antenna is IP67 and vibration and salt-spray tested. See rugged base receivers.
Integrity and interference
RAIM+ flags faulty measurements before they reach your time series, and AIM+ suppresses RF interference from nearby radios, pumps and site equipment, keeping long records clean. See RAIM+ integrity monitoring.
Recommended products

Eview receivers and antennas for deformation monitoring

ProductBest forKey specs
HB62Reference stationmosaic-X5, NTRIP, Ethernet, 64 GB logging, IP67, 9–36 V
HBEV11Monitoring points with simple cablingReceiver and full-band antenna in one, mosaic-G5, one M12 cable, base or rover
HB56Monitoring points with local loggingmosaic-X5, flange-mount metal housing, SD card logging, up to 100 Hz
EV288 antennaReference and monitoring point antennaFull-band (L5, E6, L-band), 5/8-inch mount, IP67, vibration and salt-spray tested

All products are quote-based. For a complete datasheet, email sales@gnss-solutions.com. Browse all smart antennas and GNSS antennas.

Use cases

Deformation monitoring applications

Landslides and slopes
Continuous positions on unstable hillsides, compared against a reference station on stable ground. See survey and GIS.
Dams and embankments
Monitoring points on the crest and faces of dams and levees, with raw data logged on site for later reprocessing.
Bridges
Tracking deck and tower movement over time, with temperature and traffic loading. See inspection and patrol.
Buildings and towers
Monitoring tall buildings, masts and neighbouring structures for settlement and tilt during excavation, tunnelling and construction works nearby.
Mining slopes and tailings
Pit walls, waste dumps and tailings dams in RF-noisy mine sites. See construction and mining.
Rail cuttings and embankments
Ground movement on embankments and cuttings along rail corridors and other linear infrastructure. See rail and logistics.
Integration

Easy to integrate into your monitoring system

Corrections network
The HB62 reference serves RTCM v3 corrections over Ethernet with NTRIP to every monitoring point on the site or across your network.
Data to your software
NMEA and Septentrio SBF output for monitoring software, and RINEX files from logged raw data. See multi-constellation receivers.
Long-term maintenance
Firmware updates and manuals are available on firmware downloads. For system design questions, contact our team.
FAQ

GNSS deformation monitoring: frequently asked questions

How accurate is GNSS deformation monitoring with Eview receivers?

Eview receivers deliver RTK accuracy of 0.6 cm + 0.5 ppm horizontal and 1 cm + 1 ppm vertical. Results from averaging or post-processing logged raw data depend on your processing software, session length and site conditions, so we do not quote a single figure. Ask us about your project.

How many reference stations do I need?

At least one reference station on stable ground outside the deformation zone, close enough to keep baselines short. Many projects add a second reference so that movement of one reference can be detected and the system keeps running during maintenance.

Can monitoring points run unattended?

Yes. The HB62 has an IP67 housing, 9 to 36 V input and 64 GB of logging, the HBEV11 needs only one M12 cable, and the EV288 antenna is IP67 and vibration and salt-spray tested, which suits long-term outdoor installations on slopes, dams and bridges.

How do I handle multipath near dams and buildings?

Site antennas with a clear sky view and away from reflecting walls where possible. Septentrio APME+ reduces multipath errors, and logging raw data lets you review and reprocess suspicious periods. A full-band antenna such as the EV288 helps track more signals.

Will Eview receivers work with my monitoring software?

The receivers accept RTCM v3 corrections and output NMEA and Septentrio SBF. Logged SBF converts to RINEX, the standard input for GNSS processing and monitoring software, so the receivers fit into existing monitoring and alarm systems without custom drivers.

Related reading

GNSS receivers for mining: multipath and jammingHow to choose a GNSS antennaHow to choose a GNSS receiver for surveying

Plan your GNSS monitoring network

Tell us the structure, the number of monitoring points and your power and communications set-up, and we will recommend receivers and antennas.

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