Passive electromagnetic wave reflector for measuring local strain in a structure on the Earth's surface

摘要

A passive electromagnetic wave reflector for measuring, from a satellite, local strain in a structure located on the Earth's surface, characterized in that it comprises a substantially vertical, relative to the Earth's surface, planar element, the planar element having a rectilinear side making contact with the structure the strain of which is to be measured, said element being aligned with the axis of the Earth's poles, and, fixed to the planar element, a mechanical structure having a first part located on a first side of the planar element and a second part located on a second side of the planar element, opposite the first side, the mechanical structure forming a rectilinear edge that, in combination with the rectilinear side of the planar element, forms a means for holding in position the reflector on the structure the strain of which is to be measured.

主权项

1. A passive electromagnetic wave reflector for measuring local strain in a structure located on the Earth's surface, the reflector operable to reflect, to a satellite in orbit around the Earth, an electromagnetic wave received from said satellite, comprising:
a first plate (P1) having a rectilinear side (a1) and configured to contact the structure located on the Earth's surface, and fixed to the first plate (P1), a mechanical structure (P2, P3) having second (P2) and third plates (P3) coupled to said first plate and sharing a common rectilinear edge (a3) that extends away from opposite sides of said first plate, the second plate (P2), the third plate (P3) and said first plate (P1) forming, on either side of said first plate, a cavity operable to reflect, in the direction of the satellite, the electromagnetic wave received from the satellite, the rectilinear edge (a3, a3) of the mechanical structure and the rectilinear side (a1) of said first plate being substantially located in a common plane perpendicular to a plane defined by said first plate and operable in combination to hold in position the reflector on the structure.