Adaptive GPR Antenna Mount for Uneven Ground Coupling
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Solution Overview
Problem
Conventional GPR devices face challenges in achieving high signal-to-noise ratio and precise positioning due to poor antenna coupling and positioning accuracy, particularly on uneven ground surfaces.
Innovation Solution
A GPR device with an adaptive antenna mount that allows vertical and tilting movements relative to the frame, using slide rails and sliding elements, to ensure good coupling and prevent horizontal displacement, combined with a blocking mechanism for fixed positioning when needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the antenna is fixedly attached to the cart, then the position data precision is improved, but the coupling to the ground deteriorates
Solution Approach 1:
The patent applies the dynamics principle by implementing a mount that allows the antenna assembly to move vertically relative to the frame while preventing horizontal displacement. The mount includes a vertical guide mechanism with a carriage that can slide along the guide rails, enabling the antenna to adapt its vertical position to follow the ground surface topology while maintaining precise horizontal positioning for accurate GNSS data collection.
2Reliability
If the antenna is suspended from the cart, then the coupling to the ground is improved, but the position data precision deteriorates
Solution Approach 1:
The mount provides controlled vertical movement through a carriage system that slides along guide rails, allowing the antenna to dynamically adjust its vertical position to maintain optimal coupling with the ground surface while the horizontal position remains constrained by the guide mechanism, ensuring precise positioning data.
Solution Approach 2:
The carriage assembly acts as an intermediary between the fixed frame and the antenna, providing the necessary vertical freedom of movement while maintaining horizontal positioning accuracy through the guide rail mechanism, thus mediating between the requirements for ground coupling and position precision.
3Reliability
If the antenna is allowed to move freely to adapt to ground surface, then the coupling to the ground is improved, but the horizontal position stability deteriorates
Solution Approach 1:
The vertical guide mechanism enables dynamic vertical adjustment of the antenna assembly through a carriage that slides along rails, allowing adaptation to ground surface variations while the guide structure inherently constrains horizontal movement, maintaining position stability.
Data Source
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Figure 5~6
AI summary
A ground-penetrating radar (GPR) device comprises a frame (1), a radar antenna (21), and an antenna assembly (2), wherein the antenna is part of the antenna assembly (2). Further the GPR device comprises a mount (3) for adaptively mounting the antenna assembly (2) to the frame (1) and a ground support (12) for supporting the frame (1) on the ground. In an operational state, the mount (3) prevents a horizontal displacement of the antenna assembly (2) relative to the frame (1) in two horizontal directions. In the operational state, the mount (3) further allows a vertical displacement of the antenna assembly (2) relative to the frame (1) and a tilting of the antenna assembly (2) relative to the frame (1).