WO2004006119A3 - Anomaly detection system - Google Patents

Anomaly detection system Download PDF

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Publication number
WO2004006119A3
WO2004006119A3 PCT/GB2003/002712 GB0302712W WO2004006119A3 WO 2004006119 A3 WO2004006119 A3 WO 2004006119A3 GB 0302712 W GB0302712 W GB 0302712W WO 2004006119 A3 WO2004006119 A3 WO 2004006119A3
Authority
WO
WIPO (PCT)
Prior art keywords
signals
anomaly
detection system
anomaly detection
signal
Prior art date
Application number
PCT/GB2003/002712
Other languages
French (fr)
Other versions
WO2004006119A2 (en
Inventor
Timothy Raymond Field
Original Assignee
Qinetiq Ltd
Timothy Raymond Field
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
Application filed by Qinetiq Ltd, Timothy Raymond Field filed Critical Qinetiq Ltd
Priority to AU2003240135A priority Critical patent/AU2003240135A1/en
Publication of WO2004006119A2 publication Critical patent/WO2004006119A2/en
Publication of WO2004006119A3 publication Critical patent/WO2004006119A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • G01S7/292—Extracting wanted echo-signals
    • G01S7/2923—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods

Abstract

An anomaly detection system for detecting anomalies in signals comprising of successive measurements is disclosed, wherein the system is arranged to i) compute a set of differences between successive input measurements; ii) estimate the expectation of the square of the modulus of the set of differences; iii) correlate this expectation with a function of the input signal to create a correlation signal; and iv) to provide an output indicative of the presence of an anomaly preferably by thresholding the correlation signal. Within the meaning of the specification, an anomaly is a signal reflector that does not reflect in the same statistical manner as its surroundings, such as a ship on the sea. Embodiments are disclosed wherein the signals are primarily K-distributed, but the invention is applicable to signals having other distributions.
PCT/GB2003/002712 2002-07-05 2003-06-24 Anomaly detection system WO2004006119A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003240135A AU2003240135A1 (en) 2002-07-05 2003-06-24 Anomaly detection system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0215585A GB0215585D0 (en) 2002-07-05 2002-07-05 Anomaly detection system
GB0215585.1 2002-07-05

Publications (2)

Publication Number Publication Date
WO2004006119A2 WO2004006119A2 (en) 2004-01-15
WO2004006119A3 true WO2004006119A3 (en) 2004-04-15

Family

ID=9939907

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2003/002712 WO2004006119A2 (en) 2002-07-05 2003-06-24 Anomaly detection system

Country Status (3)

Country Link
AU (1) AU2003240135A1 (en)
GB (1) GB0215585D0 (en)
WO (1) WO2004006119A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2483323C1 (en) * 2011-12-22 2013-05-27 Закрытое акционерное общество "Морские комплексы и системы" Method of forming high brightness and contrast location image and apparatus for realising said method
RU2503029C2 (en) * 2011-12-28 2013-12-27 Игорь Федорович Шишкин Method of detecting anomalies on water surface
RU2582073C2 (en) * 2014-07-01 2016-04-20 Федеральное государственное казенное военное образовательное учреждение высшего профессионального образования "Военный учебно-научный центр Военно-Морского Флота "Военно-морская академия имени Адмирала Флота Советского Союза Н.Г. Кузнецова" Method of detecting anomalies on sea surface in contactless radar method
DE102017220243B3 (en) 2017-11-14 2019-02-21 Continental Automotive Gmbh METHOD AND DEVICE FOR DETECTING A BLOCKING OF A RADAR DEVICE, DRIVER ASSISTANCE SYSTEM AND VEHICLE
RU2686678C1 (en) * 2018-01-31 2019-04-30 Акционерное общество "Военно-промышленная корпорация "Научно-производственное объединение машиностроения" Marine surface radar coverage method and device for its implementation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139847A (en) * 1976-06-16 1979-02-13 Japan Radio Company, Limited Automatic ground-clutter rejection in weather pulse radar system
US4532639A (en) * 1983-09-19 1985-07-30 Sperry Corporation CFAR receiver apparatus for detecting a signal in noise

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139847A (en) * 1976-06-16 1979-02-13 Japan Radio Company, Limited Automatic ground-clutter rejection in weather pulse radar system
US4532639A (en) * 1983-09-19 1985-07-30 Sperry Corporation CFAR receiver apparatus for detecting a signal in noise

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
FARINA A ET AL: "Radar detection of targets: new theoretical findings and results by processing recorded live data", PROCEEDINGS OF THE 1996 CIE INTERNATIONAL CONFERENCE OF RADAR, BEIJING, CHINA, 8 October 1996 (1996-10-08) - 10 October 1996 (1996-10-10), pages 5 - 12, XP002269072 *
FIELD T R, TOUGH R J A: "Diffusion processes in electromagnetic scattering generating K-distributed noise", LECTURES ON "STOCHASTIC DIFFERENTIAL EQUATIONS AND THEIR APPLICATION TO THE CHARACTERIZATION OF SEA CLUTTER", 7 October 2002 (2002-10-07) - 8 October 2002 (2002-10-08), Adaptive Systems Laboratory, McMaster University, Canada, XP002269074, Retrieved from the Internet <URL:http://soma.crl.mcmaster.ca/ASLWeb/Resources/data/TimothyField_October2002/K_distribution_submission.pdf> [retrieved on 20040204] *
FIELD T R, TOUGH R J A: "STOCHASTIC DYNAMICS OF THE SCATTERING AMPLITUDE GENERATING K-DISTRIBUTED NOISE", LECTURES ON "STOCHASTIC DIFFERENTIAL EQUATIONS AND THEIR APPLICATIONS TO THE CHARACTERIZATION OF SEA CLUTTER", 7 October 2002 (2002-10-07) - 8 October 2002 (2002-10-08), Adaptive Systems Laboratory, McMaster University, Canada, XP002269075, Retrieved from the Internet <URL:http://soma.crl.mcmaster.ca/ASLWeb/Resources/data/TimothyField_October2002/K_amplitude_submission.pdf> [retrieved on 20040204] *
TOUGH R J A: "A Fokker-Planck description of K-distributed noise", JOURNAL OF PHYSICS A (MATHEMATICAL AND GENERAL), vol. 20, 1987, pages 551 - 567, XP002269073, Retrieved from the Internet <URL:http://www.iop.org/EJ/article/0305-4470/20/3/017/jav20i3p551.pdf> [retrieved on 20040203] *

Also Published As

Publication number Publication date
AU2003240135A1 (en) 2004-01-23
AU2003240135A8 (en) 2004-01-23
WO2004006119A2 (en) 2004-01-15
GB0215585D0 (en) 2002-08-14

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