Two-Radar Lateral-Beam Layout for Aircraft Detection Coverage
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Solution Overview
Problem
Existing unmanned aircraft detection systems face challenges in achieving the required detection and avoidance performance for non-collaborative aircraft due to radar positioning interference from the aircraft structure, limiting the horizontal field of view and radar detection reliability.
Innovation Solution
Position radars on the tips of lateral beams extending from the central beam, oriented outwardly to avoid interference from the aircraft's body, with data fusion from multiple sensors to enhance detection performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If radars are positioned on the aircraft body, then the detection system can be integrated into the aircraft structure, but the aircraft structure interferes with radar radiation and degrades detection performance
Solution Approach 1:
The radar is moved from the traditional horizontal positioning on the aircraft body to a vertical positioning on the tip of the tail beam, extending in the vertical direction. This dimensional change allows the radar to operate above the aircraft structure, avoiding interference from the fuselage and wings while maintaining structural integration.
2Ease of operation
If radars are positioned at the end of the main beam, then the radar can be centrally located, but the propeller occupies this position and blocks radar detection
Solution Approach 1:
Instead of positioning the radar at the end of the main central beam where the propeller is located, the radar is positioned on the tip of the vertical tail beam extending upward from the central beam. This vertical positioning removes the radar from the propeller's interference zone while maintaining central longitudinal alignment.
3Device complexity
If a single radar is used, then the system is simpler, but the horizontal field of view is limited to +/- 60 degrees
Solution Approach 1:
The system uses a single radar with dynamically adjustable beam steering capability. The radar can electronically scan and adjust its detection beams in multiple directions within the horizontal field of view, providing flexible coverage of +/- 60 degrees without requiring multiple physical radar units.
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
Enhances radar detection performance by minimizing interference, expanding the horizontal field of view, and improving the reliability of detecting surrounding objects, meeting aviation safety standards.
Implementation Method 1
each lateral beam carrying a radar at a front end of the beam
Data Source
Figure 1~2
AI summary
The invention relates to an unmanned aircraft comprising three parallel beams 12, 14, 16 extending in at least one longitudinal direction X from a rear side to a front side of the aircraft, the central beam 16 forming a main fuselage containing a propulsion system, a propeller 18 of diameter D configured to be driven by said propulsion system being attached to a front end 162 of the central beam 16, each side beam 12, 14 being at a distance L/2 from said central beam 16 and each side beam 12, 14 carrying a radar 124, 144 at a front end of the beam.