Patent ID: 6147643
Filing Date: 2000-11-14
Classification: H01Q

Abstract:
A method of determining an aiming error for a scanning antenna, comprising:requesting said scanning antenna to be aimed in N aiming directions;measuring N actual directions with respect to a first reference system, said scanning antenna being actually aimed at said N actual directions and said first reference system being independent of said scanning antenna;calculating an orientation defect component of said aiming error by summing products between direction cosines of said N aiming directions and elementary rotations about axes of said first reference system, said direction cosines defining said N aiming directions with respect to a second reference system associated with said scanning antenna;defining a radioelectronic defect component of said aiming error as a random value independent from said N aiming directions;adding said orientation defect component to said radioelectronic defect component; andstatistically solving for said elementary rotations.