Interferometric radar with rotating antenna

A method for monitoring displacements of one or more targets by means of an interferometric radar, the method comprising:

• providing an arm, which rotates with respect to an axis of a plane orthogonal to an axis of rotation;
• providing a system of linear-polarization antennas, which is fixed to said arm for describing complete revolutions along a circular path about said axis of rotation and said arm is oriented in a direction of sight parallel to said axis of rotation;
• providing a motor-drive means for driving said arm;
• and
• providing a data-acquisition and processing unit, which is operatively connected to said antenna and said data-acquisition and processing unit acquires a succession of images detected by said antenna during rotation of said antenna about said axis of rotation and said data-acquisition and processing unit makes differential interferometric calculations on at least two successive images of one or more targets located in a field of view of said system of one or more antennas in order to measure at least one component of displacement thereof, wherein said data-acquisition and processing unit processes said data detected along two distinct arcs of said circular path and said data-acquisition and processing unit calculates interferograms between said at least two successive images acquired from said two distinct arcs of said circular path in order to obtain two components of said displacement of one or more targets.

An interferometric radar, comprising:

• an arm configured to rotate with respect to an axis of a plane orthogonal to an axis of rotation;
• a system comprising a rotating antenna with a direction of sight orthogonal to said plane of rotation of said arm, said antenna being fixed to said arm for describing complete revolutions along a circular path about said axis of rotation and being oriented in a direction of sight parallel to said axis of rotation;
• a motor-drive device configured to drive said arm;
• and
• a data-acquisition and processing unit, operatively connected to said antenna, said data-acquisition and processing unit being configured to acquire a succession of images detected by said antenna during revolution of said antenna about said axis of rotation and said data-acquisition and processing unit being configured to perform differential interferometric calculations on at least two successive images of one or more targets located in a field of view of said system of one or more antennas in order to measure at least one component of displacement thereof, wherein said data-acquisition and processing unit is further configured to process said data detected along two distinct arcs of said circular path and said data-acquisition and processing unit is further configured to calculate interferograms between said at least two successive images acquired from said two distinct arcs of said circular path to obtain two components of displacements of one or more targets.