Pioneering Precision
GNSS Augmentation
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What is it?
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Often misunderstood, the purpose of GNSS Augmentation is usually described as a means to improve position accuracy.
Although the minimisation of systematic position errors and subsequent improvement in position accuracy is a key feature of GNSS augmentation, its main purpose is to provide position integrity - that is confirmation that the position solution is indeed accurate.
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An Augmentation Service therefore enhances position accuracy and provides assurance of this accuracy and consists of the following essential components:
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Source GNSS and other anciliary Data
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Data network to connect all data source and system sites
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Data processing software to compute the augmentation data and manage its distribution
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Data delivery medium - the system for distribution of the augmentation data
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The traditional approach to this has been to develop or adopt individual elements that meet the overall functional and performance requirements in a generic manner. Data for different services and solutions is then broadcast within a single package.
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Our Approach
We have conducted the most thorough review of end user requirements from which we have developed optimal technologies to provide the ultimate positioning solution.
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Although a subtle difference, we have adopted the philosophy of developing each service specifically with all components fully optimised for that particular solution.
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Rather than develop generic components that leads to compromise; we have developed a solution which is optimal for each service with each component optimum for the end solution.
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The definition of each service:
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A different, independent positioning method
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A different, independent set of source data
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A different, independent method of delivery
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Each service provides data to permit
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Two independent position solutions that
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collectively provide maximum accuracy with maximum availability
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A Primary [P] Solution which...
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Is accuracy focussed to providing maximum possible position accuracy
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Horizontal Accuracy 0.05m (95%)
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A Secondary [S] Solution which...
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Is availability focussed on providing maximum possible availability
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Provides accuracy to the same order of magnitude as the P solution
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Horizontal Accuracy 0.20m (95%)
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Requirements
The core requirements for our services are:
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Fast signal acquisition in all operating environments
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Reliable tracking in all operating environments
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Maximum coverage
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Optimum use of bandwidth and signal transmisison power
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Resilient during scenarios of interference an atmospheric disturbance
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Installation and operationally transparent
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Maximum independence from other systems
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Service-A1
Augmentation Service-A1 delivers augmentation data for multiple Type-1 (Absolute (PPP)) precise positions. P1 provides 0.05m accuracy (95%) whilst S1 provides a high availability 0.20m (95%).
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Every aspect of the service design is conducted in line with our technology direction including a combination of partnering with the very best in their field for certain components and elements designed internally.
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Multiple sources of GNSS source data
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Multiple tiers of self-healing resilience throughout
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GNSS-style signalling using Pseudo-Random-Noise-Sequences for optimum acquisition and tracking
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Optimum signal bandwidth / power envelope
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Data payload to support multiple position solutions to maximise accuracy and availability
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6 Sigma availability achieved with enhanced Eb/No. and subsequent BER (Bit-Error-Rate)
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Substantial signal reserve at edges of satellite footprint to ensure availability
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