Multi-Antenna Positioning Phase Correction for Carrier Accuracy
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Solution Overview
Problem
Existing positioning devices with a single antenna face challenges in achieving accurate positioning due to limitations caused by the human body and multipath reception issues, while devices with multiple antennas struggle with carrier positioning due to large antenna spacing and multipath reception, leading to reduced accuracy and potential failure in positioning.
Innovation Solution
An information processing apparatus equipped with multiple antennas that corrects phase information to simulate a single point of reception, enabling accurate carrier positioning by performing real-time kinematic operations based on phase information from multiple antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas are provided in the positioning device, then the ability to receive carrier waves from satellites blocked by the human body is improved, but multipath reception causes deterioration in carrier wave reception performance and positioning accuracy
Solution Approach 1:
The patent introduces a signal processing intermediary that combines carrier wave signals from multiple antennas through correlation processing. This intermediary processing unit synthesizes the multipath-affected signals into a unified positioning solution, effectively mediating between the multiple antenna inputs and the final position calculation to eliminate harmful multipath effects
Solution Approach 2:
The patent creates a virtual copy of the single-antenna reception scenario by processing multiple antenna signals to produce an equivalent of what a single antenna would receive. Through correlation processing, the system synthesizes a unified carrier wave signal that replicates ideal single-point reception characteristics, thereby achieving high positioning accuracy while utilizing multiple physical antennas
2Adaptability or versatility
If multiple antennas are simply provided in the positioning device, then satellite signal reception coverage is improved, but the physical distance between antennas being much larger than carrier wave wavelength prevents carrier positioning
Solution Approach 1:
The patent transforms the problem from spatial separation to signal processing domain by introducing correlation processing. Instead of dealing with the physical distance between antennas in space, the system processes signals in the temporal and frequency domains, effectively changing the dimension in which antenna separation is handled. This allows carrier positioning to be achieved despite large physical antenna spacing
3Device complexity
If one antenna is provided in the positioning device, then device complexity is reduced, but satellites blocked by the human body cannot be received and positioning with sufficient accuracy fails
Solution Approach 1:
The patent merges the reception capabilities of multiple antennas into a unified signal processing framework. By combining carrier wave signals from multiple antennas through correlation processing, the system achieves the benefits of multiple antennas (receiving blocked satellites) while maintaining processing simplicity equivalent to single-antenna systems, thereby improving positioning accuracy without proportionally increasing device complexity
Data Source
AI summary
Provided is an information processing apparatus intended to address problems in which positioning devices simply equipped with a plurality of antennas will fail to perform the carrier positioning. The information processing apparatus includes a receiving unit and a processing unit. The receiving unit has a plurality of antennas located at second positions (Pa, Pb) and capable of receiving a carrier wave transmitted from a satellite. The processing unit performs positioning of a set first position (Po) on the basis of second phase information obtained by correcting first phase information of carrier waves respectively received by the plurality of the antennas.