| abstract |
(a) a measurement F<SUB>0</SUB> (x, y, dt) of the signals detected is provided; (b) on the one hand a first value F<SUB>1</SUB>(X, y, dt) is provided, termed the "integration" value and on the other hand a second value F<SUB>2</SUB> (x, y, dt) termed the "count" value is provided; (c) a value F<SUB>e</SUB>(x<SUB>0</SUB>, y<SUB>0</SUB>, dt) of a number of signals is estimated from a combination of first F<SUB>1</SUB>(X<SUB>0</SUB>, y<SUB>0</SUB>, dt) and second F<SUB>2</SUB> (x<SUB>0</SUB>, y<SUB>0</SUB>, dt) values, on the basis of a criterion of detection in the neighbourhood. |