Parallel-Plane Transmitting Antenna for Light Aircraft Geophysical Prospecting
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Solution Overview
Problem
Current airborne electromagnetic systems for geophysical prospecting are cumbersome and costly, making it difficult to achieve high-resolution data acquisition on intermediate surfaces such as catchment zones, fields, and quarries, and are not adaptable to light aircraft due to their large size and weight.
Innovation Solution
An electromagnetic system comprising a transmitting antenna with sets of electromagnetic loops positioned in different parallel planes, allowing for constrained and intensified magnetic field geometry without increasing the size or amperage, enabling adaptation to light aircraft and improved resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the transmitting loop area and number of turns are increased to enhance magnetic field intensity, then the magnetic field intensity is improved, but the size and weight of the transmitting antenna increase, making it incompatible with light aircraft
Solution Approach 1:
The patent transitions from a conventional single-plane horizontal loop to a three-dimensional configuration with multiple loops arranged in parallel planes at different altitudes. This spatial dimensionality change allows the system to generate equivalent or enhanced magnetic field intensity without increasing the horizontal footprint, enabling adaptation to light aircraft with limited payload capacity.
Solution Approach 2:
The patent employs multiple transmitting loops nested in parallel planes, where each loop contributes to the overall magnetic field generation. This nested configuration allows the system to achieve the required magnetic field intensity through coordinated operation of multiple smaller loops rather than relying on a single large loop, thereby reducing individual loop sizes and total weight.
2Power
If the amperage of injected current is increased to improve magnetic field intensity, then the magnetic field intensity is improved, but the current cut-off time increases, reducing measurement resolution
Solution Approach 1:
The patent divides the transmitting antenna into multiple independent loops that can be controlled separately. This segmentation allows the system to achieve the required magnetic field intensity through coordinated operation of multiple loops at moderate current levels, rather than requiring a single high-current loop. The segmented configuration reduces the time constant and enables faster current cut-off, thereby improving measurement resolution.
3Measurement precision
If conventional heavy airborne EM systems are used to achieve high-resolution data acquisition, then measurement precision is improved, but adaptability to light aircraft and flexibility of implementation are reduced
Solution Approach 1:
The patent employs multiple transmitting loops nested in parallel planes, where each loop contributes to the overall magnetic field generation. This nested configuration allows the system to achieve the required magnetic field intensity through coordinated operation of multiple smaller loops rather than relying on a single large loop, thereby reducing individual loop sizes and total weight.
Solution Approach 2:
The patent designs a multi-loop configuration that can operate in various geometries (horizontal, vertical, or inclined planes) and can be adapted to different aircraft types and survey requirements. This universal design enables the same basic structure to serve multiple functions and applications, enhancing adaptability while maintaining measurement precision.
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 optimizes magnetic field geometry and intensity, reducing the size and weight of the equipment while maintaining high-resolution data acquisition capabilities, facilitating flexible and rapid implementation on light aircraft for geophysical prospecting.
Implementation Method 1
injecting into a transmitting loop an electric current, varying over time, in order to create a magnetic field, also variable
Implementation Method 2
listening to the response from the subsoil following this excitation, at one or several receiving loops
Data Source
AI summary
The present disclosure relates to an electromagnetic system for geophysical prospecting, including a transmitting antenna and a receiving antenna, said transmitting antenna comprising at least one set of transmitting electromagnetic loops, said receiving antenna being formed by at least one receiving electromagnetic loop, wherein the transmitting electromagnetic loops of a same set are positioned in different planes parallel to one another.