RF Transmitter Detection via Programmable Receiver Network

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Solution Overview

Problem

Traditional RF transmitter detection techniques are ineffective for locating transmitters at a distance, especially those with low-power, intermittent signals, due to signal power decay and SNR requirements.

Innovation Solution

A network of programmable RF receivers is used to detect and geolocate RF transmitters by identifying defining characteristics such as average power, statistical measurements, and operational frequencies, with data processed centrally or independently by receivers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If traditional detection techniques are used, then detection is feasible for strong signals, but detection fails for weak or distant signals due to signal power decay and SNR requirements

Engineering Contradiction:
Improvedetection capabilityVSAvoidsignal power
Core Design Contradiction:
Measurement precisionVSPower

Solution Approach 1:

The patent combines multiple RF receivers into a networked system that collectively processes signals. By merging the detection capabilities of multiple receivers and combining their output data, the system achieves superior detection performance for weak signals compared to individual receivers, resolving the contradiction between detection precision and signal power limitations

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent transitions from single-receiver detection to multi-receiver networked detection, adding spatial dimensionality to the detection system. This dimensional expansion allows the system to overcome signal power decay by distributing receivers across multiple locations, thereby detecting weak or distant signals that would be undetectable by a single receiver

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Reliability

If traditional continuous signal detection methods are used, then regular signals can be detected, but intermittent or random signal bursts are difficult to detect

Engineering Contradiction:
Improvedetection reliabilityVSAvoidsignal duration
Core Design Contradiction:
ReliabilityVSDuration of action of moving object

Solution Approach 1:

The patent implements continuous monitoring and data accumulation across the receiver network, maintaining persistent detection capability regardless of signal intermittency. The system continuously collects RF data and accumulates evidence over time, ensuring that even brief or random signal bursts are captured and detected, thereby maintaining high detection reliability for signals of any duration

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The patent employs preliminary signal processing and data buffering at each receiver before central analysis. By pre-processing and storing RF data segments in advance, the system is prepared to immediately identify and analyze intermittent signals when they occur, improving detection reliability for short-duration or random signal bursts

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS8977209B2Method and system for detecting an RF transmitter or transmitter type using a network of programmable RF receivers
Publication Date: 2015.03.10 KEYSIGHT TECHNOLOGIES INC
  • US8977209B2 patent drawing
  • US8977209B2 patent drawing
  • US8977209B2 patent drawing

AI summary

One or more of the programmable RF receivers or other devices in the network may be programmed to determine whether one or more defining characteristics associated with a particular RF transmitter or transmitter type are present in RF data. The one or more defining characteristics are used to detect the use of an RF transmitter or transmitter type.