Process for determining the position of a radar target

G - Physics – 01 – S

Patent

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G01S 13/06 (2006.01) G01S 7/41 (2006.01)

Patent

CA 2196090

A process is disclosed for determining the position and/or the displacement in time (trace) of a (radar) target surface by means of a radar installation. A predeterminable number M of the largest echo amplitudes is first determined for the target surface, as well as the corresponding resolution cells (distance and azimuth co-ordinates). By averaging the distance and azimuth co- ordinates of the selected resolution cells, co-ordinates are determined for a reference point that is stable in space in relation to the target surface. This reference point is used for locating and/or tracing objects, in particular ships.

Un procédé sert à déterminer la position et/ou le déplacement dans le temps (trace) d'une surface cible (de radar) au moyen d'une installation radar. On détermine d'abord pour la surface cible un nombre prédéterminable M des plus grandes amplitudes d'écho ainsi que les cellules de résolution correspondantes (coordonnées de distance et d'azimut). En calculant ensuite la moyenne des coordonnées de distance et d'azimut des cellules de résolution sélectionnées, on détermine les coordonnées d'un point de référence stable dans l'espace par rapport à la surface cible. Ce point de référence est utilisé pour déterminer la position et/ou pour suivre la trace d'objets, notamment de navires.

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