Rotary Laser Positioning for High-Resolution GPR Imaging
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Solution Overview
Problem
Conventional Ground Penetrating Radar (GPR) applications fail to achieve the necessary resolution for three-dimensional imaging due to coarse spatial sampling and inadequate positioning precision, which is crucial for accurately capturing subsurface features, especially in heterogeneous environments.
Innovation Solution
A rotary laser positioning system (RLPS) with multiple laser energy sources and mobile sensor units, complemented by auxiliary sensors, is used to provide precise positioning data that is fused with geophysical data for real-time, high-resolution three-dimensional imaging of subsurface features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional positioning technologies are used in GPR applications, then the speed of data acquisition is maintained, but positioning precision is insufficient to achieve the requisite resolution
Solution Approach 1:
The positioning system is segmented into multiple independent components: rotary laser sources, laser energy sensors, complementary positioning sensors, and integrated processing units. Each component performs a specific function, and their coordinated operation achieves high-precision positioning without sacrificing data acquisition speed. The segmentation allows parallel operation of multiple sensors to capture positioning data at high rates.
Solution Approach 2:
Laser energy sensors serve as intermediaries between the rotary laser sources and the mobile sensor unit, providing precise positioning measurements. Complementary positioning sensors act as additional intermediaries to ensure continuous positioning data even when primary laser signals are temporarily unavailable, thus maintaining both precision and productivity.
2Measurement precision
If spatial sampling is increased to achieve full resolution three-dimensional GPR imaging, then measurement precision is improved, but the complexity of data acquisition increases
Solution Approach 1:
The mobile sensor unit is designed as a multi-functional platform that integrates geophysical sensing, laser positioning, complementary positioning sensors, and data processing capabilities. This universal platform performs multiple functions simultaneously, achieving high spatial sampling resolution without proportionally increasing system complexity. The integrated design allows coordinated operation of all sensors to capture densely spaced measurements efficiently.
Solution Approach 2:
The system dynamically adjusts operational parameters such as laser rotation speed, sensor sampling rate, and data acquisition frequency to optimize spatial sampling resolution. By changing these parameters, the system achieves the required quarter-wavelength grid spacing and eighth-wavelength positioning precision without requiring overly complex hardware configurations.
3Measurement precision
If multiple laser energy sources and mobile sensor units are deployed to achieve dense and uniformly distributed geophysical measurements, then measurement precision is improved, but device complexity increases
Solution Approach 1:
Multiple laser energy sources and mobile sensor units are merged into a coordinated system with centralized control and integrated data processing. The sensors are synchronized to operate in unison, and data from all units are fused to produce high-precision geophysical measurements. This merging approach achieves dense and uniformly distributed measurements while managing system complexity through integrated architecture.
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 enables accurate, real-time rendering of subsurface features with improved precision and speed, allowing for dense and uniformly distributed geophysical measurements, even in complex terrains, and facilitates automated scanning with minimal operator input.
Implementation Method 1
multiple laser energy sources disposed about a target scene
Implementation Method 2
laser energy sources disposed about a target scene, and a mobile sensor unit... one or multiple geophysical sensor communicatively linked to the laser positioning system
Data Source
AI summary
Embodiments of the present invention address deficiencies of the art in respect to positioning for geophysical sensing and provide a method, system and apparatus for rotary laser positioning in geophysical sensing. In an embodiment of the invention, a geophysical sensing data processing system can be provided to include multiple laser energy sources disposed about a target scene, and a mobile sensor unit. The mobile sensor unit can include at least one laser energy source sensor coupled to a laser positioning system, and one or multiple geophysical sensor communicatively linked to the laser positioning system. In one aspect of the invention, the laser positioning system can be a Rotary Laser Positioning System (RLPS). Complementary positioning sensors further can be provided.