Patent ID: 11953587
Assignee: IDS GEORADAR S.R.L.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 4:
5. A system for detecting positions of objects under a surface with respect to a reference Cartesian system S(x, y) having origin O(xo, yo) and axes x and y, said system comprising:
a GPR apparatus comprising:
a GPR sensor;
a control unit; and
a center of reference C(xc, yc) having coordinates xc and yc on said reference Cartesian system S(x, y);

a first linear wall, said first wall having direction parallel to said axis x of said reference Cartesian system S(x, y);
a second linear wall, said second wall having direction parallel to said axis y of said reference Cartesian system S(x, y); and
a distance detecting unit arranged for:
detecting a first measurement of distance between said distance detecting unit and said first linear wall; and
detecting a second measurement of distance between said distance detecting unit and said second linear wall; and

said control unit arranged to carry out:
a processing of said first and second measurement of distance in order to calculate said coordinates xc and yc of said center of reference C(xc, yc);
an association of coordinates xi=xci and yi=yci to an i-th object detected, where xci and yci are the values of said coordinates xc and yc at the detection by means of said GPR sensor of said i-th object;
verifying, on the basis of said change said coordinate yc, that said trajectory γ coincides with a predetermined trajectory γ′; and

in case that said step of verifying is negative, correcting said trajectory γ along which is carried out said step of handling.