WO2011059530A3 - Passive electro-optical tracker - Google Patents

Passive electro-optical tracker Download PDF

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Publication number
WO2011059530A3
WO2011059530A3 PCT/US2010/035984 US2010035984W WO2011059530A3 WO 2011059530 A3 WO2011059530 A3 WO 2011059530A3 US 2010035984 W US2010035984 W US 2010035984W WO 2011059530 A3 WO2011059530 A3 WO 2011059530A3
Authority
WO
WIPO (PCT)
Prior art keywords
trajectory
time
projectile
atmospheric conditions
range
Prior art date
Application number
PCT/US2010/035984
Other languages
French (fr)
Other versions
WO2011059530A2 (en
Inventor
Ilya Agurok
Waqidi Falicoff
Original Assignee
Light Prescriptions Innovators, Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US12/709,780 external-priority patent/US8355536B2/en
Application filed by Light Prescriptions Innovators, Llc filed Critical Light Prescriptions Innovators, Llc
Publication of WO2011059530A2 publication Critical patent/WO2011059530A2/en
Publication of WO2011059530A3 publication Critical patent/WO2011059530A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/20—Analysis of motion
    • G06T7/246—Analysis of motion using feature-based methods, e.g. the tracking of corners or segments
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10016—Video; Image sequence
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10048—Infrared image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30212—Military
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30241—Trajectory

Abstract

A passive electro-optical tracker uses a two-band IR intensity ratio to discriminate high-speed projectiles and obtain a time-varying speed estimate from their time- varying temperature, as well as determining the trajectory back to the source of fire. In an omnidirectional system a hemispheric imager with an MWIR spectrum splitter forms two CCD images of the environment. Various methods are given to determine the azimuth and range of a projectile, both for clear atmospheric conditions and for nonhomogeneous atmospheric conditions. One approach uses the relative intensity of the image of the projectile on the pixels of a CCD camera to determine the azimuthal angle of trajectory with respect to the ground, and its range. A second uses a least squares optimization over multiple frames based on a triangle representation of the smeared image to yield a real-time trajectory estimate.
PCT/US2010/035984 2009-11-11 2010-05-24 Passive electro-optical tracker WO2011059530A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US26014909P 2009-11-11 2009-11-11
US61/260,149 2009-11-11
US12/709,780 US8355536B2 (en) 2009-02-25 2010-02-22 Passive electro-optical tracker
US12/709,780 2010-02-22

Publications (2)

Publication Number Publication Date
WO2011059530A2 WO2011059530A2 (en) 2011-05-19
WO2011059530A3 true WO2011059530A3 (en) 2011-10-20

Family

ID=43992286

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2010/035984 WO2011059530A2 (en) 2009-11-11 2010-05-24 Passive electro-optical tracker

Country Status (1)

Country Link
WO (1) WO2011059530A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9876953B2 (en) 2010-10-29 2018-01-23 Ecole Polytechnique Federale De Lausanne (Epfl) Omnidirectional sensor array system
KR20210105946A (en) * 2018-12-17 2021-08-27 서프 테크놀로지 에이에스 Ultrasonic Estimation of Nonlinear Bulk Elasticity of Materials
CN115877328B (en) * 2023-03-06 2023-05-12 成都鹰谷米特科技有限公司 Signal receiving and transmitting method of array radar and array radar
CN116915321B (en) * 2023-09-12 2023-12-01 威海威信光纤科技有限公司 Rapid test method and system for optical fiber bus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0875396A (en) * 1994-09-06 1996-03-19 Tech Res & Dev Inst Of Japan Def Agency Guidance apparatus for missile
KR200240864Y1 (en) * 2001-04-26 2001-10-12 (주)비이케이엔지니어링 A surveillance camera for monitoring in every direction using a media of the optical angle and multi-montoring device using a tracking type of the camera
KR100663483B1 (en) * 2005-08-09 2007-01-02 삼성전자주식회사 Apparatus and method of unmanned surveillance using an omni-directional camera

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0875396A (en) * 1994-09-06 1996-03-19 Tech Res & Dev Inst Of Japan Def Agency Guidance apparatus for missile
KR200240864Y1 (en) * 2001-04-26 2001-10-12 (주)비이케이엔지니어링 A surveillance camera for monitoring in every direction using a media of the optical angle and multi-montoring device using a tracking type of the camera
KR100663483B1 (en) * 2005-08-09 2007-01-02 삼성전자주식회사 Apparatus and method of unmanned surveillance using an omni-directional camera

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SHREE K. NAYAR ET AL.: "Folded Catadioptric Cameras.", IEEE COMPUTER SOCIETY CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION, 1999, pages 217 - 223, XP002192598 *

Also Published As

Publication number Publication date
WO2011059530A2 (en) 2011-05-19

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