Array Antenna Units for Satellite Positioning Cost Reduction
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Solution Overview
Problem
Satellite positioning systems using the PPP-RTK technique require high-specification electronic reference points with multi-frequency support, leading to increased costs due to the need for expensive antennas and receivers.
Innovation Solution
A communication device and information processing apparatus with a plurality of antenna units arranged in an array, where each unit includes a first and second antenna element, and receiving units for different wireless signals, with adjacent units positioned to share antenna elements in perpendicular directions, allowing for efficient estimation of carrier-related information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multi-frequency support is implemented in satellite positioning systems, then positioning precision is improved, but implementation costs increase due to expensive antennas and receivers
Solution Approach 1:
The antenna system is segmented into multiple antenna units arranged in an array, where each unit handles specific frequency signals. This segmentation allows the system to achieve multi-frequency support through coordinated simple antenna elements rather than requiring each antenna to independently support all frequencies, thereby reducing individual component costs while maintaining overall positioning precision.
2Measurement precision
If a dense network of electronic reference points is deployed, then positioning accuracy is improved, but system complexity and cost increase
Solution Approach 1:
Multiple antenna units are merged into a unified array structure that processes signals collectively. The combining of signals from multiple simple antenna units creates a dense network effect that improves positioning accuracy while avoiding the complexity of deploying multiple independent high-specification reference points, as the array operates as an integrated system rather than separate complex units.
Data Source
AI summary
A Provided is a communication device that includes a plurality of antenna units that are arranged in an array. Each of the antenna units includes a first antenna element and a second antenna element that are arranged in a first direction, a first receiving unit that receives a first wireless signal used in satellite positioning, via the first antenna element, and a second receiving unit receives a second wireless signal used in the satellite positioning, via the second antenna element. Among the antenna units, a first and a second antenna units that are positioned adjacently to each other in a second direction being perpendicular to the first direction are arranged in such a manner that the first antenna element in one of the first and the second antenna is positioned adjacently to the second antenna element in the other antenna in the second direction.