GNSS Receiver Spatial Accuracy via Planned Position Comparison
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Solution Overview
Problem
Determining measurement errors in multiple statically placed GNSS receivers in a spatial configuration is challenging, as it is unclear whether the signal originates from one spot or another, leading to difficulties in improving spatial accuracy.
Innovation Solution
A method that receives positions from multiple GNSS receivers, compares them to planned positions, and compensates for differences using machine-performed pattern recognition or manual adjustment to identify and correct measurement errors, ensuring accurate positioning across the spatial configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple GNSS receivers are placed in a spatial configuration to improve measurement accuracy, then the spatial coverage and error correction capability are improved, but it becomes unclear whether the signal originates from one spot or another, making error determination problematic
Solution Approach 1:
The patent divides the spatial configuration into multiple discrete receiver positions, each with known planned coordinates. By segmenting the overall measurement area into individual receiver locations and comparing measured versus planned positions for each segment, the system can identify which specific receiver's signal is being analyzed, thus resolving the ambiguity of signal origin while maintaining spatial accuracy improvements.
2Measurement precision
If standalone GNSS receivers use more refined antennas or higher precision receivers to decrease measurement errors, then the measurement accuracy is improved, but the cost, size and power requirements increase
Solution Approach 1:
The patent merges multiple standard GNSS receivers into a spatial configuration network, where the collective measurement data from multiple receivers is processed together. By combining the capabilities of multiple receivers and using comparative analysis of their positions and measurements, the system achieves higher effective accuracy without requiring each individual receiver to be more complex or expensive.
Solution Approach 2:
The patent introduces a central processing system that acts as an intermediary, receiving measurements from multiple receivers and performing the error correction calculations. This intermediary processing layer enables accurate error determination and correction without requiring complex hardware modifications to the individual receivers themselves.
3Measurement precision
If the spatial configuration of multiple GNSS receivers is compared with planned positions to identify differences, then the measurement errors can be corrected, but the process requires obtaining and processing map data of planned positions
Solution Approach 1:
The patent performs preliminary action by pre-establishing the spatial configuration and obtaining the planned positions of all receivers before conducting measurements. By having the reference map data and planned positions prepared in advance, the system can directly compare measured positions against these pre-established references, streamlining the error correction process without requiring complex real-time data acquisition or processing.
Data Source
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AI summary
A method of improving spatial accuracy of positions measured by Global Navigation Satellite System (GNSS) receivers that are placed in a spatial configuration covering an area in which a deviation of a measured position from an actual position of each GNSS receiver is in the same direction is disclosed. The method comprises receiving the positions measured by the GNSS receivers in the spatial configuration, obtaining a map of planned positions of the GNSS receivers in the spatial configuration and comparing the positions measured by the GNSS receivers with the planned positions of the GNSS receivers to identify the difference between the measured positions and the planned positions. Finally, the measured positions can be compensated for this difference. When, after placement, it is not clear which object is placed where, the compensated positions can be used to identify the position of each specific object.