| 摘要 |
An apparatus for interferometric SAR (100) comprises at least a radar antenna (110) arranged to emit and receive a signal with frequency in the microwaves range and a moving means arranged to actuate each radar antenna (110) along a trajectory s in such a way that each antenna implement interferometric SAR. In particular, the means for moving comprises a support base (120) and a kinematic chain (130) arranged to provide to each radar antenna (110) at least 3 rotational degrees of freedom with respect to the support base (120). The kinematic chain (130) comprises a proximal stiff link (132) having a first end (132a) and a second end (132b), a first pivotal constraint (131) arranged to pivotally connect the first end (132a) of the proximal stiff link (132) to the support base (120), a distal stiff link (134) having a first end (134a) and a second end (134b), said distal stiff link (134) being pivotally connected to the proximal stiff link (132), a second pivotal constraint (135) arranged to pivotally connect the second end (134b) of the distal stiff link (134) to each radar antenna (110), and a third pivotal constraint (133) arranged to pivotally connect the second end (132b) of the proximal stiff link (132) to the first end (134a) of the distal stiff link (134). This way, the trajectory s lies on a plane n orthogonal to the emitted signal by said or each radar antenna (110), for implementing linear interferometric SAR, and/or lies on a circular arc, for implementing curvilinear interferometric SAR. |
