G - Physics – 01 – S
Patent
G - Physics
01
S
G01S 7/292 (2006.01)
Patent
CA 2422355
The present invention provide a method and system of dynamically estimating a coefficient of variation of the fluctuation of a waveform and an optimal binary detection threshold using the estimated coefficient of variation. The system discriminates between noise signals and signal-plus-noise signals of a digitized signal by comparison with a threshold. The noise and signal-plus- noise signals are further used to determine a mean noise floor level and a standard deviation, respectively. Subsequently, the system determines the coefficient of variation based on the ratio of standard deviation to mean. The optimal binary detection threshold is calculated using the coefficient of variation, presets for cumulative probability of false alarm and collection time.
La présente invention concerne un procédé et un système d'estimation dynamique d'un coefficient de variation de la fluctuation d'une forme d'onde et d'un seuil de détection binaire optimal au moyen dudit coefficient estimé de variation. Le système distingue les signaux de bruit et les signaux plus bruit d'un signal numérisé par comparaison à un seuil. Le bruit et les signaux des signaux plus bruit sont ensuite utilisés pour déterminer respectivement un niveau du bruit plancher moyen et une déviation standard. Puis, le système détermine le coefficient de variation en fonction du taux de déviation standard vers la moyenne. On calcule le seuil de détection binaire optimal en utilisant le coefficient de variation, des préréglages de la probabilité cumulative de fausse alerte et du temps de collection.
Gowling Lafleur Henderson Llp
Lockheed Martin Corporation
LandOfFree
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