公开(公告)号：US20230273282A1

公开(公告)日：2023-08-31

申请号：US17920202

申请日：2021-04-21

Applicant: The Trustees of Princeton University

Inventor： Alexei GOUN ,  Herschel RABITZ

IPC: G01R33/44 ,  G01R33/34 ,  G01R33/36

CPC classification number: G01R33/441 ,  G01R33/34015 ,  G01R33/3607

Abstract: Systems and methods are described, and one method includes illuminating a target-of-interest (TI) with an RF energy configured to effect, over a time duration extending from a first time to a second time, an increase in a temperature of the TI. At a first detection time within the time duration, a first temperature NQR signal spectrum of the TI is detected, and a corresponding first temperature NQR spectrum data set is generates. At a second detection time, subsequent to the first detection time, a second temperature NQR signal spectrum of the TI is detected and corresponding second temperature NQR spectrum data set is output. Based at least in part on the first temperature NQR spectral dataset and the second temperature NQR spectral dataset, the TI is classified between including the SI and not including the SI.

公开(公告)号：US20230152664A1

公开(公告)日：2023-05-18

申请号：US17920128

申请日：2021-04-22

Applicant: The Trustees of Princeton University

Inventor： Alexei GOUN ,  Herschel RABITZ

IPC: G02F1/35 ,  G01S7/41 ,  G01S7/481

CPC classification number: G02F1/353 ,  G01S7/415 ,  G01S7/4816 ,  G02F2203/56

Abstract: Disclosed herein is the detection of dangerous dielectric materials (explosives) and dangerous non-explosive and/or prohibited items. The detection is based on a broad bandwidth nonlinear radar system, driven by a highly stable optical frequency comb. The disclosed approach allows for the spatial resolution of the interrogated object in complex settings. Detection of dangerous materials and non-explosive chemical prohibited items is disclosed. The chemicals can be identified under clothing, within boxes, or other dielectric enclosures