InSAR - Satellite based ground and structure deformation monitoring made simple.
ATLAS™ is our InSAR solution for remote monitoring of ground deformation with millimetric accuracy.
Radar satellite interferometry (InSAR) is a non-invasive surveying technique able to measure millimetric motion of terrain structures over wide areas in both urban and non-urban environments. This technique is based on the exploitation of synthetic aperture radar images (SAR) acquired from satellite- sensors.
ATLAS™ uses raw data from satellite constellations that we process to deliver time-series ground motion data with a density of up to 20,000 pts /Km2
Stand alone or in conjunction with more traditional instrumentation it provides unique information about your site or infrastructure without any installation on the ground.
Archive of SAR data acquired (from 1992 onwards) is available and can be used to analyse and map ground movements that have occurred in the past. These retro studies inform of pre-existing vulnerabilities and make sure the construction design is suited for the existing conditions.
Furthermore, evidences from the past ground and asset behaviors are an effective tool for 3rd parties claims protection.
When using high resolution satellite images Atlas InSAR provides results with a resolution of 3m x 3m and a density up to 20,000 Pts/Km2 over very large areas.
This yields an unrivalled level of information to analyse and understand the situation and behaviour of your site whatever its size, infrastructure or the whole city.
Dewatering activities for example have shown on numerous occasions impacts over long distances, and Atlas InSAR measurements will enable a clear delimitation of the perimeter at risk and overcome the potential problem of loss of references for the ground instruments.
Atlas InSAR outcomes are measurement layers of many thousands to a few million measurement points depending on the nature of the surface.
While precise levelling is carried out in one specific area at a rate of around 100 points monitored per day, ATLAS™ can provide more than 20,000 measurements points per km2 in urban environments.
Precise levelling, Automatic Total Station and InSAR are complementary technologies and if properly deployed, the combination of the three can significantly lower the cost of ground deformation monitoring with richer delivery of information.
BEYOND™ Satellite is our web based delivery platform for all of your projects. With an architecture optimised for “big data”, visualisation and analysis of millions of data points is smooth and intuitive.
For urban or rural environments, Atlas InSAR yields outstanding outcomes for monitoring almost any type of asset. Buildings, airports, ports, dams, roadways, railways, mines...
For monitoring settlement induced by underground excavation and/or dewatering (tunnel construction, mining…) Atlas InSAR stands out. Its ability to monitor simultaneously large areas with high density and accuracy is absolutely unique and highly valuable.
No wonder Atlas InSAR is becoming a standard in ground & structure deformation.
Around Auckland, we are already starting to see higher temperatures, increased drought, more intense rainfall events and sea level rise. We expect more change over the next 100 years. Also Auckland Council has declared a climate emergency and established a plan to prepare Auckland for the impacts of climate change
The Auckland area is subject noticeable ground movements and to analyse the impact of the climate on the ground deformation, Sixense as provided Atlas- InSAR high resolution data over the extended metropolitain Auckland.
The delivery was completed by advanced data analytics to extract the important information form this "big data" set.
The Suburban Rail Loop (SRL) is an orbital line of the rail tunnel network of Melbourne, which will traverse suburbs 15–25 kilometres from the Central Business District (CBD) along an approximately 90 km route. Stage 1 between Cheltenham to Box Hill is underway to construction.
Sixense is providing extensive baseline monitoring over the tunnel alignment and surroundings with Atlas- InSAR medium and high resolution. To complete the monitoring scheme, a set of Artificial Corner Reflectors (ACR) has also been installed to provide measurement data, either on green field where traditional InSAR processing is more limited, or on critical areas/points.
Artificial Corner Reflectors
WestConnex is a 33-kilometre predominantly underground motorway scheme in Sydney. The full project is divided in seven diffrents packages with construction staged over a decade.
Sixense is providing Atlas-InSAR monitoring at high resoluton over the span of the projects.
Crossrail (The Elisabeth Line) is a 117-kilometre railway that traverses London from East to West. The construction phase of the project began in 2009 with an estimated cost in excess of £17 billion. The main challenge, for which the ATLAS InSAR technique was pivotal, was monitoring the 21km of twin tunnels running from Paddington to Stratford and Canary Wharf below the city.
Crossrail is the first construction project actively using InSAR as a technique to reduce monitoring costs. ATLAS InSAR monitoring was performed before and during the construction of the tunnels and is still ongoing to analyse residual settlement. The study area monitored includes a corridor 2km wide over the tunnel alignment, covering a total area up to 36 km2.