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Method-and-apparatus-for-identifying-buried-objects-using-ground-penetrating-radar

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Method and apparatus for identifying buried objects using ground penetrating radar

Details

Inventors: Witten, Alan;
Assignee: Witten Technologies Inc. (Boston, MA)
Primary Examiner: Gregory; Bernarr E.
Assistant Examiner:
Attorney, Agent or Firm: Fulbright&Jaworski L.L.P.

An apparatus for identifying a buried object using ground penetrating radar (GPR) in a system containing at least one GPR sensor, comprises a data processor for detecting spatial correlations in data received from a GPR sensor in the apparatus and an image processor capable of building a data structure corresponding to an image of the buried object from data processed by the data processor. A method for identifying a buried object using GPR in a system containing a GPR sensor comprising detecting spatial correlations in data received from the GPR sensor in the system and building a data structure corresponding to an image of the buried object from the received data.

DETAILED DESCRIPTION OF THE INVENTION A method and system is disclosed for identifying buried objects using ground-penetrating radar.
FIG.
1 is an embodiment of an apparatus for identifying buried objects using ground-penetrating radar consistent with the present invention.
The apparatus of FIG.
1 includes sensor unit 102, data processor 104, pre-processor 106, image processor 108, feature processor 110, detector 112, discriminator 114, and display 116.
FIG.
2 is a detailed view of sensor unit 102.
An embodiment of sensor unit 102 consistent with the present invention includes transmit antenna 202 and receive antenna 204.
Transmit antenna 202 emits GPR waves used to probe for buried objects.
Receive antenna 204 receives the transmitted GPR waves as they are reflected from the ground and from objects located beneath the ground.
Sensor unit 102 controls the characteristics of the transmitted GPR signal (in some instances receiving support from data processor 104 as will be descried in greater detail below) and receives the reflected signal.
Suitable antennas for the present invention include, for example, small broadband antennas with a broad beam pattern having a frequence response spanning at least two octaves.
Those skilled in the art will recognize that there are many suitable geometries for the arrangement of antenna elements in transmit antenna 202 and receive antenna 204.
For example, three suitable antenna geometries consistent with the present invention are shown in FIG.
3.
Antenna 302 has antenna transmitters ("T") and receivers ("R") arranged in a single line, with alternating transmitter and receiver elements.
Antenna 304 has one row of transmitter elements and a parallel row of receiver elements.
Antenna 306 has one row of transmitter elements and a parallel row of receiver elements with the receiver element row offset from the row of transmitter elements.
Each antenna can have the same polarization or polarization can vary among the antennas.
Additional antenna arrangements consistent with the present invention are described in U

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