Methods and apparatus for weighting radar return data

Details Methods and apparatus for weighting radar return data Methods and apparatus for weighting radar return data

G - Physics

01

S

G01S 13/94 (2006.01)

Patent

CA 2528082

A method for reducing effects of terrain return fading due to summation of out of phase radar returns in determining locations of radar targets (48) is described. The method comprises determining an interferometric angle, .PHI., to a radar target based on at least one radar return and filtering the interferometric angle, .PHI., by adjusting an effect of terrain features contributing to the interferometric angle, .PHI., proportionally to a degree of radar return fading resulting from the terrain features of the radar targets, A corrected interferometric angle, .PHI.out., is then provided, based at least in part on the filtering.

La présente invention concerne un procédé qui permet de réduire l'évanouissement de retour du terrain dû à la sommation des échos-radars déphasés lors de la détermination des positions de cibles radars (48). Le procédé consiste à déterminer un angle interférométrique, F, par rapport à une cible radar sur la base d'au moins un écho-radar puis à filtrer l'angle interférométrique, F, au moyen de l'ajustement d'un effet de caractéristiques de terrain contribuant à l'angle interférométrique, F, proportionnellement à un degré de l'évanouissement des échos-radars résultant des caractéristiques du terrain des cibles radars. Un angle interférométrique corrigé, F¿out?., est ensuite produit, au moins en partie sur la base du filtrage.

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