ES2526444T3 - Aparato y método para localizar la fuente de una señal desconocida - Google Patents

Aparato y método para localizar la fuente de una señal desconocida Download PDF

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Publication number
ES2526444T3
ES2526444T3 ES12159261.2T ES12159261T ES2526444T3 ES 2526444 T3 ES2526444 T3 ES 2526444T3 ES 12159261 T ES12159261 T ES 12159261T ES 2526444 T3 ES2526444 T3 ES 2526444T3
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Prior art keywords
signal
differential
source
formula
dfos
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ES12159261.2T
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English (en)
Inventor
David Patrick Haworth
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Kratos Integral Holdings LLC
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Kratos Integral Holdings LLC
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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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G01S1/022—Means for monitoring or calibrating
    • G01S1/026—Means for monitoring or calibrating of associated receivers
    • 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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/06—Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/20—Countermeasures against jamming
    • H04K3/22—Countermeasures against jamming including jamming detection and monitoring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/80—Jamming or countermeasure characterized by its function
    • H04K3/90—Jamming or countermeasure characterized by its function related to allowing or preventing navigation or positioning, e.g. GPS

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

Un método de localizar la fuente de una señal desconocida, caracterizado porque el método comprende las etapas de: (i) calcular un desfase diferencial para una señal para cada una de una pluralidad de posiciones dentro de una región en la cual debe encontrarse el transmisor (10), para cada uno de una serie de tiempos m con respecto a los repetidores de señal primero y segundo (14/16) y con respecto a los receptores primero y segundo (18A/18B), siendo las posiciones de los repetidores de señal (14/16) y de los receptores (18A/18B) conocidas; (ii) generar una función de ambigüedad cruzada (CAF - Cross-Ambiguity Function, en inglés) utilizando datos correspondientes a muestras de la señal desconocida recibida en los receptores primero y segundo (18A/18B) a través de los repetidores de señal primero y segundo (14/16) respectivamente; (iii) estimar el nivel de ruido de la CAF; y (iv) utilizar los datos generados en las etapas (i), (ii) y (iii) para obtener una medición de la probabilidad de que la fuente esté situada dentro de áreas definidas dentro de la citada región; donde los desfases diferenciales son desfases de tiempo diferenciales (DTOs - Differential Time Offsets, en inglés) o desfases de frecuencia diferenciales (DFOs - Differential Frequency Offsets, en inglés), o ambos DTOs y DFOs; y donde en el dominio de la frecuencia, los citados datos son convertidos a un formato de decibelios utilizando**Fórmula** donde los valores interpolados de la superficie de ambigüedad vienen dados por**Fórmula** dondeT0 y ν 0 son los DTO y DFO en el punto de índice 0,0 y -1<=p<=1, -1<=q<=1, donde los valores de p y de q que maximizan f vienen dados por**Fórmula**

Description

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Claims (1)

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ES12159261.2T 2006-10-28 2007-10-29 Aparato y método para localizar la fuente de una señal desconocida Active ES2526444T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0621486 2006-10-28
GB0621486A GB2443226B (en) 2006-10-28 2006-10-28 Method and apparatus for locating the source of an unknown signal

Publications (1)

Publication Number Publication Date
ES2526444T3 true ES2526444T3 (es) 2015-01-12

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
ES12159261.2T Active ES2526444T3 (es) 2006-10-28 2007-10-29 Aparato y método para localizar la fuente de una señal desconocida
ES07824344T Active ES2394226T3 (es) 2006-10-28 2007-10-29 Aparato y método para localizar la fuente de una señal desconocida

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES07824344T Active ES2394226T3 (es) 2006-10-28 2007-10-29 Aparato y método para localizar la fuente de una señal desconocida

Country Status (5)

Country Link
US (1) US8081111B2 (es)
EP (2) EP2076788B9 (es)
ES (2) ES2526444T3 (es)
GB (1) GB2443226B (es)
WO (1) WO2008053173A1 (es)

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Also Published As

Publication number Publication date
EP2076788B1 (en) 2012-10-10
GB2443226B (en) 2011-08-17
GB0621486D0 (en) 2006-12-06
EP2466327A1 (en) 2012-06-20
EP2076788A1 (en) 2009-07-08
EP2076788B9 (en) 2013-02-06
US8081111B2 (en) 2011-12-20
US20090278733A1 (en) 2009-11-12
ES2394226T3 (es) 2013-01-23
GB2443226A (en) 2008-04-30
EP2466327B1 (en) 2014-12-03
WO2008053173A1 (en) 2008-05-08

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