Patent ID: 8094059

Claim:
A method for determining the angular aperture corresponding to the extent in a plane of an object seen by a radar antenna, the object being situated at a given distance from the radar antenna, the method comprising: a step of measuring echoes in directions θ p - Δθ 2 ⁢ ⁢ and ⁢ ⁢ θ p + Δθ 2 of the plane, where θ p is a variable angle corresponding to directions of the plane and Δθ is a given angular aperture; a step of calculating the pairwise differences between the echo measurements taken in the directions θ p - Δθ 2 ⁢ ⁢ and ⁢ ⁢ θ p + Δθ 2 ; a step of determining the slope at a value θ p of a function e of θ p interpolated between the calculated differences, the angular aperture which corresponds to the extent of the object at the given distance being deduced from the slope.