TRE Altamira is at the North American Tunneling Conference 2022
to present InSAR for Tunneling Operations

Tunneling and civil engineering groundwork activities are constantly increasing due to urban development. Ground excavation activities, especially in highly urbanized areas, can lead to potential geohazards due to ground settlement associated with tunneling activites.
InSAR data is crucial to help assist in determining the extent and origin of ground instability, as well as monitor the surface-level impact of groundwork along the alignment and in the surrounding areas.
Satellite data provides useful information on 1) ground settlement trends prior to operations; 2) surface movement during tunneling operations - to assess the correlation between tunneling and surface displacement; and 3) post-excavation stability - to detect possible residual subsidence that might impact infrastructure.

TRE-ALTAMIRA - Canada line
Canada Line: InSAR monitoring analysis showing post-construction settlement around the area of the LRT alignment.
Original Data provided by JAXA
TRE-ALTAMIRA - Canada line zoom
Canada Line, close-up: Analysis of ground displacement associated with tunnel excavation. Comparison between conventional leveling and InSAR monitoring.
Original Data provided by JAXA

Spatially dense and precise results

spatially dense and precise resultsThanks to its millimetric precision and high density of measurement points, InSAR is also used to complement and calibrate real-time in-situ surveillance such as levelling, inclinometers, etc.

Non-invasive and scalable technique

non-invasive scalabilityCompletely remote, satellite InSAR is unrivaled in its ability to obtain displacement measurements over large or small areas.


cost effectiveInSAR is the only ground monitoring technique providing highly dense measurements at a fraction of the cost of other survey techniques.

Historical data

historical dataSatellite data archives extend back to 1992 and can be processed to assess past movement trends.

Our experienced and multilingual team of InSAR experts are available to answer your questions.
Feel free to contact us anytime to ask for a consultation.

Cyriac Sebastian
Business Development


Riccardo Tortini
Intermediate GIS Analyst


Our brochure

Civil Engineering

To learn more about InSAR for Civil Engineering, visit us here.
Thank you for visiting us at NAT 2022!