Method for determining the orientation of an antenna array

Details Method for determining the orientation of an antenna array Method for determining the orientation of an antenna array

G - Physics

01

S

G01S 19/23 (2010.01) G01S 19/55 (2010.01)

Patent

CA 2595296

The aim of the invention is to limit the number of possible phase ambiguity resolutions when taking measurements by means of satellite-aided positioning systems. Said aim is achieved by a method which allows the search sector to be better restricted. To this avail, information about the geometry of an antenna array is used for establishing restrictions for said antenna array. Said restrictions allow the search sector and thus the number of acceptable resolutions to be successively reduced. A restriction comprises the utilization of the connecting line between two antennas (A0, A1) that define a primary base line (S01). An additional, secondary base line (S0x) can be calculated by inventively parameterizing the degree of rotational freedom of said secondary base line (S0x) about the primary base line (S01) such that the process is accelerated.

En vue de limiter le nombre de solutions possibles de l'ambiguité des phases, lors de mesures effectuées avec des systèmes de positionnement assistés par satellites, l'invention concerne un procédé permettant une limitation améliorée de l'espace de recherche. On utilise à cet effet, pour une disposition d'antennes, des connaissances sur leur géométrie permettant d'établir des restrictions. Grâce à ces restrictions, l'espace de recherche et, de ce fait, le nombre de solutions admissibles, est réduit progressivement. Une restriction réside dans l'utilisation de la ligne de liaison entre deux antennes (AO, AI) qui définissent une ligne de base primaire (SOI). Grâce à une paramétrisation, conforme à l'invention, du degré de liberté de rotation d'une autre ligne de base secondaire (SOx) autour de la ligne de base primaire (SOI), un calcul efficace de cette ligne de base secondaire (SOx) peut être obtenu, permettant ainsi de réaliser une accélération du procédé.

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