Determining a Coherence Measurement for a Digital Signal

Determining a Coherence Measurement for a Digital Signal

Device for Determining a Coherence Measurement for a Digital Signal That Does Not Require Spectral Estimation

This technology estimates digital signal coherence in support of processing systems that generate frequency estimates as inputs to large-scale decision operations. Coherence is a measurement of spectral sharpness, by comparison to a pure sinusoid whose coherence is 100%.

Using methods alternative to involved frequency analysis, this method is able to exploit different signal features and does not require thresholds to obtain coherence figures-of-merit. This invention uses efficient algorithms resulting in real time output and the graphical output has easy-to-analyze results. The graphical user interface (GUI) is intuitive and can function on any tablet, laptop, or desktop platform using Windows® operating systems.

 

Abstract: 

Click to view PDFs of these patents on the US Patent and Trademark Office website: Patent 8,200,731

applications: 
  • Signal processing
  • Radar/sonar detection
  • Materials fault discovery
  • Medical scanning
  • Structural integrity testing
Patent Number: 
8,200,731
Patent Issue Date: 
June 12, 2012
Email: 
tech_transfer@nsa.gov
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