Abstract: A method for detecting positions of objects under a surface with respect to a reference Cartesian system having axes x and y, includes prearranging a GPR apparatus that includes a distance detecting unit for measuring a distance with respect to a not transparent object, a control unit, and a center of reference having coordinates xc and yc on the reference Cartesian system. The method further includes prearranging a first linear wall having direction parallel to the axis x, handling the apparatus on the surface, detecting a first measurement of distance between the distance detecting unit and the first linear wall, calculating the coordinate yc of the center of reference, calculating a change of the coordinate yc during the step of handling, and associating a coordinate yi=yci to an i-th object detected, where yci is value of the coordinate yc at the detection by a GPR sensor of the i-th object.

Abstract: A method for filtering an interferometric radar acquisition, said method comprising the step of prearrangement of a radar system for carrying out acquisitions of images of a scenario by means of SAR interferometry, the radar system comprising at least one radar sensor arranged to emit and receive a radar signal, a control unit configured to analyse said signal received by said radar sensor by means of interferometric technique, a screen arranged to show to a user said images of said scenario.

Abstract: A method for sampling an Ultra Wide Band signal comprising a step of prearranging a GPR antenna comprising at least one transmitter and one receiver, a variable-gain amplifier, or VGA, a A/D converter and a control unit. The method then comprises the steps of transmitting and receiving a primary Ultra Wide Band signal by the GPR antenna and sampling values of the primary signal relative to a first full-scale portion by the A/D converter. The method also comprises the steps of transmitting and receiving at least one secondary Ultra Wide Band signal by the GPR antenna, amplifying said or each secondary signal by the variable-gain amplifier, and sampling values of said or each secondary signal relative to full-scale portions different from the first portion by the A/D converter.

Abstract: A method for monitoring surface deformations of a scenario by means of differential interferometry technique, including the steps of prearranging a radar sensor having a transmitting antenna and a receiving antenna arranged to transmit and acquire radar signals, the radar sensor arranged to move along a planar trajectory ? having centre O; defining a reference system S having origin in the centre O; acquiring by SAR technique the scenario by means of handling the radar sensor along the planar trajectory ?, the radar sensor being configured so that the radiation pattern of the antennas is oriented radially with respect to the centre O, the acquisition occurring at points of acquisition si arranged on the trajectory ?, the three-dimensional position of each target point ti being definable by means of spherical coordinates (?i,?i,?i).

Abstract: A drill head for earth boring, in particular for a horizontal drilling device, includes a housing, a transmitter for generating a radio signal, an antenna and a receiver for receiving a reflected radio signal, wherein the transmitter which is adapted to generate the radio signal includes a direct digital synthesizer.

Abstract: In a method for mitigating the blurring effect in a radar image (40) obtained by a ground-based radar system, thereof, a Pulse Repetition Frequency (PRF) value is selected (110) in a radar sensor unit (30) such that radial velocity measurements of the targets of an observed scenario can be made up to a maximum unambiguous velocity vmax, a radial velocity threshold is also selected (101) to discriminate between substantially stationary targets and possible fast-moving targets having radial velocities vR, j?v* and vR, f>v*, respectively.

Abstract: A method for ground penetrating radar analysis of a scenario, having a surface, with respect to a cartesian reference system S(x, y) having origin O(0, 0) and axes x and y. The method comprises a step of prearranging a gpr apparatus that comprises at least one gpr sensor, a control unit, a centre of reference C(xc, yc) having coordinates xc and yc with respect to the cartesian reference system S(x, y), at least one image acquisition devices, each image acquisition devices (110,120) having a pointing direction ?j known with respect to the centre of reference C(xc, yc). The method comprises then the steps of handling the gpr apparatus on the surface and detecting possible underground objects by means of gpr technique.

Abstract: A method for filtering an interferometric radar acquisition, said method comprising the step of prearrangement of a radar system for carrying out acquisitions of images of a scenario by means of SAR interferometry, the radar system comprising at least one radar sensor arranged to emit and receive a radar signal, a control unit configured to analyse said signal received by said radar sensor by means of interferometric technique, a screen arranged to show to a user said images of said scenario.

Abstract: A method for monitoring surface deformations of a scenario by means of differential interferometry technique, said method comprising the steps of prearranging a radar sensor comprising at least one transmitting antenna and a receiving antenna arranged to transmission and acquisition of radar signals, said radar sensor arranged to move along a planar trajectory ? having centre O; defining a reference system S having origin in said centre O; acquiring by SAR technique said scenario by means of handling said radar sensor along said planar trajectory ?, said radar sensor being configured in such a way that the radiation pattern of said antennas is oriented radially with respect to said centre O, said acquisition occurring at points of acquisition si arranged on said trajectory ?, obtaining a plurality of data for each point of acquisition si; defining a plurality of target points ti of said scenario, the three-dimensional position of each target point ti being definable by means of spherical coordinates (?i,?i,?i

Abstract: A method for detecting the position of objects (10) under a surface (200) with respect to a reference Cartesian system S(x,y) having origin 0(0,0) and axes x and y, said method comprising the steps of prearranging a GPR apparatus (110), said GPR apparatus (110) comprising a GPR sensor, a distance detecting unit (115) configured to measure a distance with respect to a not transparent object, a control unit, a centre of reference C(xc,yc) having coordinates xc and yc on the reference Cartesian system S(x,y).

Abstract: The invention relates to a method and to an apparatus for determining a displacement vector field of a scenario, by a ground-based interferometric radar system operated in multi-bistatic mode and comprising a main radar transceiver device and at least one passive radar receiver device arranged at a predetermined distance from each other, in which the oscillators of the at least two radar are synchronized, in time and in frequency, in particular according to a signal coming from a global positioning system. The method provides a step of interferometrically determining at least one first displacement map and one second displacement map of the scenario between a previous time and a subsequent time, expressed in a global reference system and having each a plurality of pixels each associated to a respective domain of the scenario.

Abstract: The invention relates to a method and to an apparatus for determining a displacement vector field of a scenario, by a ground-based interferometric radar system operated in multi-bistatic mode and comprising a main radar transceiver device and at least one passive radar receiver device arranged at a predetermined distance from each other, in which the oscillators of the at least two radar are synchronized, in time and in frequency, in particular according to a signal coming from a global positioning system. The method provides a step of interferometrically determining at least one first displacement map and one second displacement map of the scenario between a previous time and a subsequent time, expressed in a global reference system and having each a plurality of pixels each associated to a respective domain of the scenario.