公开(公告)号：US12008805B2

公开(公告)日：2024-06-11

申请号：US17753263

申请日：2020-08-13

Applicant: BAE SYSTEMS plc

Inventor： Mark Edgar Bray ,  Jason John Lepley

IPC: G01S7/4865 ,  G06V20/00 ,  G08B13/196

CPC classification number: G06V20/00 ,  G01S7/4865 ,  G08B13/1965

Abstract: Methods and apparatus for detecting a modulating element of an object are described in which signal values are obtained from one or more optical detectors. A determination is made if there is a time dependent variation in the obtained signal values at the one or more optical detector and a modulating element is detected based on the determination.

公开(公告)号：US20220299642A1

公开(公告)日：2022-09-22

申请号：US17753265

申请日：2020-08-20

Applicant: BAE SYSTEMS plc

Inventor： Mark Edgar Bray ,  Jason John Lepley

IPC: G01S17/50 ,  G01S17/08 ,  G01H9/00 ,  H04N5/225

Abstract: Methods and apparatus for detecting a modulating element of an object in a scene are described in which an element in a scene is illuminated with a modulated light source. A signal is obtained from an optical detector based on light received from the illuminated element. An intermediate frequency signal is detected from the signal obtained from the optical detector, the intermediate frequency signal being related to a frequency of the modulated light source and a frequency of modulation of the element within the scene. The modulating element is detected based on the intermediate frequency signal.

公开(公告)号：US12044635B2

公开(公告)日：2024-07-23

申请号：US17753016

申请日：2020-08-13

Applicant: BAE SYSTEMS plc

Inventor： Lionel William John Kent ,  Jason John Lepley

IPC: G01N23/20066 ,  G01N33/22 ,  G01V5/222

CPC classification number: G01N23/20066 ,  G01N33/227 ,  G01V5/222 ,  G01N2223/053

Abstract: A method and apparatus for classifying and/or identifying materials by means of their spectral response to gamma radiation. Classification is carried out by irradiating multiple different samples with gamma radiation, detecting a spectral response in the backscatter direction, sorting the spectral response into energy bands and selecting a combination of energy bands to define a relationship that best distinguishes between clusters of spectral responses for different material classes. Two or more of the energy bands may overlap.

公开(公告)号：US20220334071A1

公开(公告)日：2022-10-20

申请号：US17753016

申请日：2020-08-13

Applicant: BAE SYSTEMS plc

Inventor： Lionel William John Kent ,  Jason John Lepley

IPC: G01N23/20066 ,  G01N33/22 ,  G01V5/00

Abstract: A method and apparatus for classifying and/or identifying materials by means of their spectral response to gamma radiation. Classification is carried out by irradiating multiple different samples with gamma radiation, detecting a spectral response in the backscatter direction, sorting the spectral response into energy bands and selecting a combination of energy bands to define a relationship that best distinguishes between clusters of spectral responses for different material classes. Two or more of the energy bands may overlap.

公开(公告)号：US20220299612A1

公开(公告)日：2022-09-22

申请号：US17753263

申请日：2020-08-13

Applicant: BAE SYSTEMS plc

Inventor： Mark Edgar Bray ,  Jason John Lepley

IPC: G01S7/4865 ,  G08B13/196

Abstract: Methods and apparatus for detecting a modulating element of an object are described in which signal values are obtained from one or more optical detectors. A determination is made if there is a time dependent variation in the obtained signal values at the one or more optical detector and a modulating element is detected based on the determination.