Antenna Pairing for UAV Polarization Mismatch
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication between unmanned aerial vehicles (UAVs) and their controllers or base stations is impaired due to changes in orientation and position, leading to polarization mismatch and shadowing effects, which disrupts the communication link.
Innovation Solution
Implementing a system with multiple antennas on both the UAV and the base station, configured along various axes, that rapidly transmit and receive ordered sets of transmissions to identify the best antenna pair based on signal strength, ensuring robust and adaptive pairing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single linearly polarized antenna is used on both UAV and base station, then the device complexity is reduced, but the reliability of wireless communication deteriorates due to polarization mismatch and shadowing effects
Solution Approach 1:
The patent divides the single antenna system into multiple antennas (at least two) on both the UAV and base station. Each antenna is configured with different orientations and polarizations to handle various communication scenarios, thereby segmenting the communication function across multiple elements to improve reliability
Solution Approach 2:
The patent implements dynamic antenna pairing where the system continuously monitors signal strength and automatically selects the optimal antenna pair based on current UAV orientation and position. This dynamic adaptation allows the system to maintain reliable communication as the UAV maneuvers, resolving the contradiction between simple fixed configuration and reliable adaptive communication
2Reliability
If multiple antennas are deployed on both UAV and base station, then the reliability of wireless communication is improved through diverse polarization options, but the device complexity increases
Solution Approach 1:
The patent implements self-service through automatic antenna pairing where the system autonomously monitors signal strength from multiple antennas and selects the optimal pair without manual intervention. The UAV or base station automatically identifies the best antenna combination based on real-time communication conditions, reducing the operational complexity despite having multiple antennas
Solution Approach 2:
The patent changes the parameter of antenna selection based on signal strength measurements. By monitoring received signal strength indicators (RSSI) from different antenna pairs and selecting the pair with optimal parameters, the system manages complexity through parameter-based adaptation rather than complex structural design
3Adaptability or versatility
If the UAV body tilts during turns, then the adaptability to maneuvering is improved, but the polarization alignment deteriorates causing communication disruption
Solution Approach 1:
The patent applies dynamics by making the antenna pairing adaptive to UAV motion. As the UAV tilts and maneuvers, the system dynamically monitors signal strength from different antenna orientations and automatically switches to the pair that maintains proper polarization alignment, allowing full maneuvering capability without compromising communication reliability
Solution Approach 2:
The patent makes the antenna system universal by configuring multiple antennas with different orientations and polarizations. This multi-functional antenna array can handle various UAV attitudes and orientations, ensuring that at least one antenna pair maintains proper alignment regardless of how the UAV maneuvers, thus resolving the contradiction between maneuvering adaptability and polarization stability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the reliability and stability of wireless communication by dynamically selecting the optimal antenna pair, maintaining a strong connection even during UAV maneuvers, thereby improving communication quality.
Implementation Method 1
a signal strength measuring circuit, configured to measure a received signal strength of transmissions within the ordered set of transmissions as received by the first plurality of antennas
Data Source
AI summary
Herein is disclosed an antenna pairing system comprising a first plurality of antennas configured to receive an ordered set of transmissions; a signal strength measuring circuit, configured to measure a received signal strength of transmissions within the ordered set of transmissions as received by the first plurality of antennas; one or more processors, configured to identify a pairing transmission, the pairing transmission being a transmission from the ordered set of transmissions having a received signal strength fulfilling a predefined criterion, according to the signal strength measuring circuit; and identify an antenna of the first plurality of antennas at which the pairing transmission was received.