E. Fait, le signal ~(n) est affecté par un bruit: ~ (n) = f(n,P) + b(n) (III

. La-présence-du-facteur-dans, 44) n'est pas pour nous surprendre Il signifie que, toutes choses égales par ailleurs, la précision sur la détermination de 0393 est proportionnelle à la racine carrée de la durée de l'enregistre- Sur la figure 111.28, nous avons representé, en fonction de 0393* et pour diverses valeurs de A*, la dispersion statistique réduite optimale calculée en minimisant l'expression

A. Comme-il-Était-prévisible, parce que le bruit augmente sans contrepartie en signal porteur d'information sur 0393 Entre les situations extrêmes * 0393 039403C9 , où les seules quantités que l'on puisse espérer déterminer avec précision sont A et 0393H, * 0393 » 039403C9 , où les seules quantités que lion puisse espérer déterminer avec précision sont (A+H) et H0393 -2 , la situation la plus favorable est: Sur la figure 111

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