公开(公告)号：WO2018213212A1

公开(公告)日：2018-11-22

申请号：PCT/US2018/032623

申请日：2018-05-15

Applicant: LEIDOS, INC.

Inventor： IFARRAGUERRI, Augie ,  GORIN, Brian ,  CAMACHO, J. Frank ,  CHRISTIAN, Noah ,  RICE, Robert

IPC: G01J3/30 ,  G01J3/45 ,  G01J3/453 ,  G01J9/02 ,  G01N21/35 ,  H03G3/00

Abstract: A system and process scans a target area at a distance of 3-30 m for one or more materials. Scanning is performed by a coherent transmit beam aimed with the help of a thermal camera. The active source of the beam is a supercontinuum (SC) laser. The transmitted source beam is modulated by a high-speed Fourier-transform spectrometer prior to interaction with the target. Target reflected source beam is detected by an infrared detector, along with a reference portion of the transmitted source beam, as a series of interferograms; passed through a digitizer for digitizing the interferograms; and processed to producing spectrograms, wherein the spectrograms are indicative of one or more materials on the target.