Multi-Antenna Beacon Tracking Under Ambient EM Noise
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing beacon signal detection systems face interference from ambient noise sources, particularly when drilling underground, making it difficult to maintain accurate tracking of underground beacons due to electromagnetic interference from sources like electric utility lines or railroad tracks.
Innovation Solution
The system uses an above-ground tracker with multiple antennas oriented in different directions to detect peak and minimal ambient noise directions, allowing the processor to exclude noise signals and resume beacon detection by adjusting antenna orientation or signal filtering to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the tracker uses a single antenna oriented perpendicular to the ground, then it can effectively receive beacon signals from underground, but it becomes highly susceptible to interference from ambient electromagnetic noise sources
Solution Approach 1:
The patent divides the single antenna into multiple antenna elements (at least two antennas) with different orientations. Each antenna is configured to receive electromagnetic radiation from different spatial directions, allowing the system to segment the reception space and avoid noise from specific directions while maintaining beacon signal detection capability.
Solution Approach 2:
The patent applies different orientations to different antenna elements, where each antenna has a specific reception pattern optimized for certain directions. The processor selectively processes signals from antennas based on their orientation relative to detected noise sources, giving different weights to different spatial locations to minimize noise impact.
2Object-affected harmful factors
If the tracker uses multiple antennas with different orientations, then it can reduce susceptibility to ambient noise, but the device complexity increases
Solution Approach 1:
The patent designs the antenna system where each antenna serves multiple functions: receiving beacon signals from underground, detecting ambient noise from specific directions, and providing spatial information for noise rejection. The processor also performs multiple functions including signal processing, noise detection, and determining optimal antenna selection, making the system multi-functional despite increased complexity.
Solution Approach 2:
The patent implements dynamic antenna selection and signal processing where the processor continuously monitors signals from multiple antennas, identifies noise patterns, and adaptively adjusts which antenna signals are used for beacon detection. This dynamic adaptation allows the system to optimize performance in real-time based on the electromagnetic environment.
3Object-affected harmful factors
If the processor continuously monitors all antenna signals to detect noise directions, then noise rejection improves, but the processing time and computational load increase
Solution Approach 1:
The patent performs preliminary noise detection by having the processor continuously monitor antenna signals to identify ambient noise sources and their directions before they significantly interfere with beacon signal detection. This preliminary action allows the system to pre-adjust which antennas to use or apply appropriate filtering, reducing the computational burden during actual beacon detection.
Solution Approach 2:
The patent implements a feedback mechanism where the processor analyzes signals from all antennas, detects noise patterns and directions, and uses this information to adjust the selection and processing of antenna signals for beacon detection. This feedback loop enables adaptive noise rejection where the system learns from the electromagnetic environment and optimizes its signal processing accordingly.
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 effectively reduces noise interference, enabling continuous beacon signal detection and accurate tracking of underground beacons, facilitating reliable underground drilling operations.
Implementation Method 1
Each antenna is oriented in a different direction and is configured to receive electromagnetic radiation and generate a set of signals indicative of such radiation
Data Source
AI summary
A method for detecting a beacon signal using an above-ground tracker. The tracker comprises an antenna assembly comprising a plurality of antennas. Each antenna is oriented in a different direction. During operation, if the beacon signal is interrupted due to a local noise source, transmission of the beacon signal is stopped. The tracker then detects radiation from the local noise source and the processor determines a direction from which peak ambient noise arrives at the tracker. The beacon signal is then resumed. A processor included in the tracker excludes any signals generated by the antenna assembly that are representative of radiation that arrived at the tracker from the same direction the peak ambient noise arrived at the tracker. The tracker then detects the beacon signal using the non-excluded signals.