Method for storing measurements made by a radar
First Claim
1. A method for storing measurements of a given type made by a radar, each measurement M(x, y, z) having been made at a position (x, y, z) in a given coordinate system, where x, y and z are real numbers, the method comprising:
- a step of accessing a structured data storage space (Π
), each location of which is addressable by a pair of positive integers and each location of which is able to store at least one evolution profile of the measurements of the given type as a function of the altitude z;
a meshing step which associates a position (xi, yj,
0), where xi and yj are real numbers, with a pair of positive integers (i,j) allowing a location to be addressed;
a step of modifying the content of the location with the pair (i,j) as its address by storing there an evolution profile ƒ
ij such that for each pair (x,y) of real numbers satisfying |x−
xi|≦
ε
x and |y−
yj|≦
ε
y, where ε
x and ε
y are given real thresholds, for which a measurement M(x, y, z) has been made at an altitude z, ∥
M(x, y, z)−
ƒ
ij∥
≦
ε
M where ε
M is a given real threshold and ∥
∥
is a norm suited to the type of the measurements.
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Abstract
The present invention relates to a method for storing measurements of a given type made by a radar, each measurement having been made at a position in a given coordinate system. The method comprises a step of accessing a structured data storage space, each location of which is addressable by a pair of positive integers and each location of which is able to store at least one evolution profile of the measurements of the given type as a function of altitude. It also comprises a meshing step which associates a ground position with a pair of positive integers allowing a location to be addressed. The method also comprises a step of modifying the content of the location with the pair of integers as its address by storing there an evolution profile such that for each ground position sufficiently close to the position associated with the pair and for which a measurement has been made at a certain altitude, the evolution profile provides approximately the measurement made at this altitude.
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Citations
12 Claims
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1. A method for storing measurements of a given type made by a radar, each measurement M(x, y, z) having been made at a position (x, y, z) in a given coordinate system, where x, y and z are real numbers, the method comprising:
-
a step of accessing a structured data storage space (Π
), each location of which is addressable by a pair of positive integers and each location of which is able to store at least one evolution profile of the measurements of the given type as a function of the altitude z;a meshing step which associates a position (xi, yj,
0), where xi and yj are real numbers, with a pair of positive integers (i,j) allowing a location to be addressed;a step of modifying the content of the location with the pair (i,j) as its address by storing there an evolution profile ƒ
ij such that for each pair (x,y) of real numbers satisfying |x−
xi|≦
ε
x and |y−
yj|≦
ε
y, where ε
x and ε
y are given real thresholds, for which a measurement M(x, y, z) has been made at an altitude z, ∥
M(x, y, z)−
ƒ
ij∥
≦
ε
M where ε
M is a given real threshold and ∥
∥
is a norm suited to the type of the measurements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification