Collapsible Tri-Axial Frame Antenna for Tactical Direction Finding
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Solution Overview
Problem
Existing directional finding systems for high-frequency signals, especially in tactical situations with low-power transmitters, face challenges in achieving accurate signal identification and location due to large antenna array requirements and limited mobility.
Innovation Solution
A collapsible tri-axial frame antenna system that operates in the high-frequency range, utilizing three orthogonal loop antenna elements to provide three-dimensional directional finding capabilities, allowing for real-time intelligence and accurate geo-location of emitters, even in close proximity and mobile environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If large HF antenna arrays are used to collect distant powerful signals, then signal reception capability is improved, but system size and real estate requirements increase
Solution Approach 1:
The antenna system is segmented into three separate orthogonal loop antennas arranged in a tri-axial configuration. Each loop antenna is independent and can be positioned on separate frames, allowing the system to achieve directional finding capabilities without requiring a single large continuous array structure.
Solution Approach 2:
The patent transitions from traditional planar antenna arrays to a three-dimensional tri-axial configuration with loops oriented along X, Y, and Z axes. This dimensional change enables the system to receive signals from all directions in 3D space, providing omnidirectional coverage and improved signal reception without increasing ground area requirements.
2Measurement precision
If large HF antenna arrays are deployed for directional finding, then directional finding accuracy is improved, but system portability and mobility deteriorate
Solution Approach 1:
The system is divided into modular components including three separate loop antennas, support frames, and electronic processing units. This segmentation allows the antenna system to be disassembled, packed into transport cases, and rapidly deployed at different locations, maintaining portability while preserving directional finding accuracy through the orthogonal tri-axial configuration.
Solution Approach 2:
The patent employs adjustable and reconfigurable antenna support frames that can be assembled and disassembled. The electronic system also dynamically processes signals from the three orthogonal loops to determine signal direction, allowing the system to adapt to different deployment scenarios while maintaining accuracy.
3Reliability
If traditional HF directional finding systems are used, then signal detection capability is improved, but system complexity and weight increase
Solution Approach 1:
The patent combines three orthogonal loop antennas into a single integrated tri-axial system with unified electronic processing. The signal processing architecture merges inputs from all three loops to compute directional information, reducing the need for separate processing systems and simplifying overall system complexity while maintaining detection capability.
Solution Approach 2:
The tri-axial loop antenna system serves multiple functions: it can detect signals from any direction in 3D space, provide omnidirectional coverage, and determine both azimuth and elevation angles. This multi-functionality eliminates the need for multiple separate antenna systems, reducing overall complexity.
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
The system enhances directional finding accuracy and reliability, reduces size and weight, and enables rapid deployment and operation, providing effective real-time intelligence in tactical situations by using enhanced algorithms and a compact, portable design.
Implementation Method 1
A collapsible tri-axial frame antenna system that operates in the high-frequency range, utilizing three orthogonal loop antenna elements
Data Source
AI summary
A antenna is described including a first frame having a first loop antenna element disposed thereon; a second frame having a second loop antenna element disposed thereon, the second frame disposed perpendicular to the first frame in an operational mode and disposed parallel to the first frame when in a stored mode; and a third frame having a third loop antenna element disposed thereon, the third frame disposed perpendicular to the first and second frame in an operational mode and disposed parallel to the first and second frame when in a stored mode.