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1. WO2020112184 - PROJECTILE DETECTION SYSTEM AND METHOD

Publication Number WO/2020/112184
Publication Date 04.06.2020
International Application No. PCT/US2019/047024
International Filing Date 19.08.2019
IPC
G06K 9/00 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
G06K 9/62 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
62Methods or arrangements for recognition using electronic means
G06K 9/40 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
36Image preprocessing, i.e. processing the image information without deciding about the identity of the image
40Noise filtering
G06K 9/54 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
36Image preprocessing, i.e. processing the image information without deciding about the identity of the image
54Combinations of preprocessing functions
G06T 3/60 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
3Geometric image transformation in the plane of the image
60Rotation of a whole image or part thereof
G06T 7/20 2017.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
7Image analysis
20Analysis of motion
CPC
F41G 3/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
41WEAPONS
GWEAPON SIGHTS; AIMING
3Aiming or laying means
F41H 11/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
41WEAPONS
HARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
11Defence installations; Defence devices
02Anti-aircraft or anti-guided missile ; or anti-torpedo; defence installations or systems
G06K 9/00
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
G06K 9/00624
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
00624Recognising scenes, i.e. recognition of a whole field of perception; recognising scene-specific objects
G06K 9/2018
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
20Image acquisition
2018Identifying/ignoring parts by sensing at different wavelengths
G06K 9/3208
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
20Image acquisition
32Aligning or centering of the image pick-up or image-field
3208Orientation detection or correction, e.g. rotation of multiples of 90 degrees
Applicants
  • BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. [US]/[US]
Inventors
  • LOUCHARD, Eric, M.
Agents
  • ASMUS, Scott, J.
Priority Data
16/106,51321.08.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROJECTILE DETECTION SYSTEM AND METHOD
(FR) PROCÉDÉ ET SYSTÈME DE DÉTECTION DE PROJECTILE
Abstract
(EN)
A projectile detection technique is disclosed. The technique helps improve the self-defense capabilities of strategic platforms such as naval ships against asymmetric threats such as anti-ship missiles (ASMs). These threats can be particularly challenging in a highly cluttered maritime environment, where the threats can be too close for radar to accurately detect. In one example, the projectile detection technique automatically detects ASMs flying above the horizon by using mid-wavelength infrared (MWIR) and visible/near-infrared (VNIR) camera systems, and locating the horizon line and segmenting the imagery into different regions. Projectiles are detected in the near-horizon segment using a Fourier phase-only transform and convolution matched filters to enhance exceedances, then applying multi-frame processing to measure persistence and scintillation (e.g., flicker from missile exhaust) to help filter out background clutter objects. The use of the phase-only transform, matched filters, and multi-frame processing helps detect single -point anomalies and distinguish ASMs from background clutter.
(FR)
L'invention concerne une technique de détection de projectile. La technique contribue à améliorer les capacités d'auto-défense de plates-formes stratégiques telles que des navires militaires contre des menaces asymétriques telles que des missiles antinavire (ASM). Ces menaces peuvent être particulièrement redoutables dans un environnement maritime fortement encombré, dans lequel les menaces peuvent être trop proches pour que le radar puisse les détecter avec précision. Dans un exemple, la technique de détection de projectile détecte automatiquement des ASM volant au-dessus de l'horizon à l'aide de systèmes de caméra infrarouge à longueur d'onde moyenne (MWIR) et du spectre visible/infrarouge proche (VNIR), et en localisant la ligne d'horizon et en segmentant l'imagerie en différentes régions. Des projectiles sont détectés dans le segment d'horizon proche à l'aide d'une transformée à phase de Fourier uniquement et de filtres de convolution adaptés pour mettre en évidence les dépassements, et ensuite l'application d'un traitement de trames multiples permet de mesurer la persistance et la scintillation (par exemple, papillotement de l'échappement d'un missile) pour aider à filtrer des objets produisant un fouillis d'échos fixes d'arrière-plan. L'utilisation de la transformée de phase uniquement, de filtres adaptés et du traitement de trames multiples facilite la détection d'anomalies de point unique et permet de distinguer les ASM du fouillis d'échos fixes d'arrière-plan.
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