Ground Based Interferometric Radar (GBInRad) is a class of terrestrial remote sensing imaging system, based on
microwave interferometric techniques. The principal application of GBInRad system is deformation monitoring,
since respect to other techniques they can provide remote sensing, high sensitivity to small deformations, long range
of measurements, imaging capability and fast scan time.
The main limitation of standard GBInRad system is their capability of detecting movements only along the Line of Sight
(LoS) of the sensor, although actual targets may show deformations in any direction of space; this represents an
important limitation with respect to other techniques able to estimate the full 3D deformation vector.
If the displacement direction is not known a priori, combining together LoS displacement measured from different
spatial positions, it is possible to reconstruct the actual 3D displacement vector of monitored targets.
In this paper are introduced and analysed the various aspect of the displacement vector measurement with multiple
GBInRad system that work both in a monostatic and in a bistatic configuration.
In the monostatic configuration every system transmits and receives the signal independently from the others; this
approach requires multiple GBInRad system deployed to monitoring the same scenario and therefore its main
limitations lie in the costs, power consumption and maintenance.
A possible cost-effective evolution of the monostatic configuration is to exploit GBInRad system in a multiple bistatic
configuration; a multiple bistatic Radar is a system in which a transmitter operates together with multiple receivers
located in different positions in space.
In this paper, the deformation vector measurement by means of bistatic GBInRad is proposed.