Autonomous RF Interference Detection With UAV Spectral Scanning

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Solution Overview

Problem

Current methods for detecting radio frequency (RF) anomalies or interferences in smart buildings or factories are reactive, leading to potential network breakdowns and production downtime, as they require on-site engineer intervention to identify interference sources.

Innovation Solution

A system utilizing an unmanned vehicle equipped with an RF receiver and machine learning unit to autonomously detect RF anomalies by recording and analyzing RF spectral data, allowing for proactive identification and location of interference sources without the need for on-site engineers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If current reactive methods are used where engineers manually search for interference sources, then detailed analysis can be performed, but detection speed is slow and network breakdown may occur before detection

Engineering Contradiction:
Improvedetection speedVSAvoidnetwork stability
Core Design Contradiction:
SpeedVSReliability

Solution Approach 1:

The system performs preliminary detection by continuously monitoring RF spectral data before anomalies cause network breakdown. The unmanned vehicle proactively scans the environment and identifies interference sources in advance, allowing preventive action rather than reactive response after network failure occurs.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent replaces the mechanical manual search method with an automated unmanned vehicle system equipped with RF receivers and machine learning units. This substitution enables continuous autonomous monitoring without human intervention, significantly increasing detection speed while maintaining reliability through automated anomaly identification.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If baseband signals are recorded continuously for detailed analysis, then detection precision is improved, but data storage requirements and processing time increase significantly

Engineering Contradiction:
Improveanomaly detection precisionVSAvoiddata processing time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

Instead of continuously recording baseband signals, the system applies partial action by recording baseband data only when RF spectral anomalies are detected. This selective recording approach maintains high detection precision for critical events while dramatically reducing overall data storage requirements and processing time compared to continuous recording.

Inventive Principle:
Principle #16Partial or excessive action

Solution Approach 2:

The system applies different quality levels to different data types: RF spectral data is recorded continuously at lower resolution for broad monitoring, while baseband signals are recorded at high resolution only at specific locations and times when anomalies are detected. This local quality differentiation optimizes both precision and efficiency.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS20230336259A1System and method for RF anomaly or interference detection
Publication Date: 2023.10.19 ROHDE & SCHWARZ GMBH & CO KG
  • US20230336259A1 patent drawing
  • US20230336259A1 patent drawing
  • US20230336259A1 patent drawing

AI summary

The invention relates to system (10) for radio frequency, RF, anomaly or interference detection in an environment (20). The system (10) comprises an unmanned vehicle (11) which is configured to move through the environment (20), and at least one RF receiver (12) which is mounted to the unmanned vehicle (11) and which is configured to record RF spectral data at different locations in the environment (20). The system (10) further comprises at least one RF machine learning unit, RFMLU (13), wherein the RFMLU (13) is configured to analyze the RF spectral data in order to detect RF anomalies or interferences. In case of detecting an RF anomaly or interference with the RFMLU (13), the RF receiver (12) is configured to record a baseband signal of an RF environment at the location of the detected RF anomaly or interference.