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Our Technology
We provide an innovative range of advanced equipment designed to meet your unique needs. As the only company offering a combined GNSS and InSAR approach, we deliver a specialized and tailored service that sets us apart in the industry.
GNSS
A Global Navigation Satellite System (GNSS) is a network of satellites that deliver positioning, navigation, and timing (PNT) services. GNSS satellites orbit Earth, broadcasting data on their location and timing to radio receivers, which decode these signals to determine the receiver's position on the ground.
The Science Behind Our Tracking Process
INSAR
InSAR (Interferometric Synthetic Aperture Radar) uses multiple SAR (Synthetic Aperture Radar) images to detect surface movements over time. This technique enables precise monitoring of changes across landscapes and structures.
How SAR Imagery Works to Capture Surface Data
Remote sensing satellites equipped with SAR technology send microwave energy pulses to Earth, measuring the energy that is reflected back. The advantage of using microwave energy is that it allows SAR to operate reliably in all weather conditions, as it is unaffected by clouds or rain.
Understanding SAR Data: Amplitude and Phase
SAR images contain critical information about the Earth’s surface, captured in two forms: the amplitude and phase of the backscattered radar signal. The phase component provides details about the distance between the satellite and the Earth’s surface, a key metric for InSAR analysis.
Differential InSAR: Measuring Changes Over Time
Differential InSAR compares two SAR images of the same area, taken at different times. If surface movement occurs between these time points, it will result in a phase shift in the data, revealing the extent of movement with high precision.
Enhancing Accuracy with Multi-Image Analysis
While differential InSAR can achieve significant accuracy with just two images, factors like atmospheric delays can introduce errors. By using multiple SAR images over time, these effects can be mitigated, enabling millimetric-level accuracy in surface movement detection.
Applications of AT-InSAR
AT-InSAR can be applied in many different settings, from rural to urban areas, expanding the typical uses of InSAR data.
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1. Infrastructure network monitoring (buildings, road, rail, energy, water, gas, pipelines etc.)
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2. Planning applications for Urban, Greenfield and Brownfield sites.
3. Reporting on Mining Subsidence.
4. Monitoring onshore oil, gas and ground water stores & extraction
5. Providing information on natural perils for the Insurance Industry,
6. General geohazard & environment monitoring.
7. Peatland-monitoring, reporting and verification (MRV) during restoration for climate change and carbon sequestration.
The Technology Driving Our Approach
GNSS
GNSS, or Global Navigation Satellite System, is a network of satellites orbiting Earth in precise trajectories to provide global coverage. With constellations of 18 to 30 satellites, GNSS delivers accurate positioning and timing information to specialized radio receivers, enabling reliable navigation and location-based services worldwide.
How GNSS Determines Location
GNSS, or Global Navigation Satellite System, operates through a network of satellites orbiting Earth, transmitting signals with precise position and timing data. A GNSS receiver calculates its location by using trilateration, measuring its distance from at least four satellites to determine an exact position on Earth.
Precision Positioning and 3D Location Fixing
To find an absolute position, GNSS relies on latitude, longitude, and elevation coordinates. When a receiver connects with four or more satellites, it can accurately establish its 3D position (latitude, longitude, and altitude), making GNSS invaluable for navigation, mapping, and real-time tracking in dynamic settings.
High-Precision Timing Synchronisation
GNSS satellites are equipped with high-precision atomic clocks, which allow receivers to synchronise time accurately. This synchronisation provides an essential timing source for sectors like finance, telecommunications, and energy, where precise timing is critical for efficient and secure operations.
Improving GNSS Accuracy with RTK and PPP
GVL enhances GNSS accuracy through Real-Time Kinematics (RTK) and Precise Point Positioning (PPP). RTK uses ground station data to correct signals in real-time for centimeter-level precision, while PPP shares precise satellite data, ensuring highly accurate positioning for various applications.
Applications of GNSS
An example of our GNSS technology in action is the ASLAN project, where it is deployed for advanced rail applications. Our GNSS solutions also extend to sectors such as agriculture, autonomous vehicles, and machine control. Partner with us to get a GNSS solution tailored to your company’s needs, where various domains can be improved through GNSS:
Enhanced Safety
GNSS-enabled systems can detect and alert drivers to potential hazards, such as track obstructions or signal failures, significantly reducing the risk of accidents.
Improved Efficiency
Precise positioning and navigation capabilities enable optimised route planning and scheduling, leading to more efficient operations and reduced downtime.
Increased Reliability
GNSS technology helps ensure reliable and punctual service by providing accurate real-time information on vehicle location and performance.
Reduced Environmental Impact
By optimising vehicle speed and reducing fuel consumption, GNSS-powered solutions contribute to a greener and more sustainable rail industry.
Partner with us to benefit from the applications of our AT-InSAR and GNSS technology solutions to transform your monitoring capabilities.