ES2484640R1 - METHOD OF DETECTION OF ULTRASONIC SIGNALS WITH DSSS MODULATION TOLERANT TO THE DOPPLER EFFECT - Google Patents

METHOD OF DETECTION OF ULTRASONIC SIGNALS WITH DSSS MODULATION TOLERANT TO THE DOPPLER EFFECT Download PDF

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Publication number
ES2484640R1
ES2484640R1 ES201230049A ES201230049A ES2484640R1 ES 2484640 R1 ES2484640 R1 ES 2484640R1 ES 201230049 A ES201230049 A ES 201230049A ES 201230049 A ES201230049 A ES 201230049A ES 2484640 R1 ES2484640 R1 ES 2484640R1
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ES
Spain
Prior art keywords
signals
detection
ultrasonic signals
dsss
doppler effect
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
ES201230049A
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Spanish (es)
Other versions
ES2484640A2 (en
ES2484640B2 (en
Inventor
Fernando Javier ÁLVAREZ FRANCO
José Antonio MORENO ZAMORA
Álvaro HERNÁNDEZ ALONSO
Jesús UREÑA UREÑA
María Del Carmen PÉREZ RUBIO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Universidad de Alcala de Henares UAH
Universidad de Extremadura
Original Assignee
Universidad de Alcala de Henares UAH
Universidad de Extremadura
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.)
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Application filed by Universidad de Alcala de Henares UAH, Universidad de Extremadura filed Critical Universidad de Alcala de Henares UAH
Priority to ES201230049A priority Critical patent/ES2484640B2/en
Publication of ES2484640A2 publication Critical patent/ES2484640A2/en
Publication of ES2484640R1 publication Critical patent/ES2484640R1/en
Application granted granted Critical
Publication of ES2484640B2 publication Critical patent/ES2484640B2/en
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • 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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G01S15/08—Systems for measuring distance only
    • G01S15/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S15/325—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of coded signals, e.g. of phase-shift keyed [PSK] signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

El uso de técnicas de modulación de espectro expandido por secuencia directa (DSSS) en los sistemas sensoriales ultrasónicos introduce importantes mejoras respecto a los sistemas clásicos basados en detección de envolvente. En este tipo de sistemas, la detección de señales se realiza mediante el uso de filtros acoplados (correladores) que convolucionan la señal recibida con la versión invertida en el tiempo de los patrones emitidos. Este proceso de comparación de patrones es especialmente sensible al movimiento del emisor o del receptor de señales ultrasónicas y su efecto Doppler asociado, dada la baja velocidad de propagación de estas señales comparada con la de las ondas electromagnéticas. Esta invención presenta un nuevo método de detección de señales ultrasónicas con modulación DSSS que permite llevar a cabo la detección de estas señales cuando el emisor o el receptor se encuentran en movimiento, así como realizar una estimación de la velocidad de este movimiento.The use of direct sequence expanded spectrum (DSSS) modulation techniques in ultrasonic sensory systems introduces significant improvements over classical systems based on envelope detection. In this type of systems, the detection of signals is carried out through the use of coupled filters (correlators) that convolve the received signal with the time-reversed version of the emitted patterns. This pattern comparison process is especially sensitive to the movement of the transmitter or receiver of ultrasonic signals and their associated Doppler effect, given the low propagation speed of these signals compared to that of electromagnetic waves. This invention presents a new method of detecting ultrasonic signals with DSSS modulation that allows the detection of these signals when the transmitter or receiver are in motion, as well as an estimation of the speed of this movement.

ES201230049A 2012-01-13 2012-01-13 METHOD OF DETECTION OF ULTRASONIC SIGNALS WITH DSSS MODULATION TOLERANT TO THE DOPPLER EFFECT Active ES2484640B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES201230049A ES2484640B2 (en) 2012-01-13 2012-01-13 METHOD OF DETECTION OF ULTRASONIC SIGNALS WITH DSSS MODULATION TOLERANT TO THE DOPPLER EFFECT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES201230049A ES2484640B2 (en) 2012-01-13 2012-01-13 METHOD OF DETECTION OF ULTRASONIC SIGNALS WITH DSSS MODULATION TOLERANT TO THE DOPPLER EFFECT

Publications (3)

Publication Number Publication Date
ES2484640A2 ES2484640A2 (en) 2014-08-11
ES2484640R1 true ES2484640R1 (en) 2014-08-21
ES2484640B2 ES2484640B2 (en) 2015-01-20

Family

ID=51266000

Family Applications (1)

Application Number Title Priority Date Filing Date
ES201230049A Active ES2484640B2 (en) 2012-01-13 2012-01-13 METHOD OF DETECTION OF ULTRASONIC SIGNALS WITH DSSS MODULATION TOLERANT TO THE DOPPLER EFFECT

Country Status (1)

Country Link
ES (1) ES2484640B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6633617B1 (en) * 1999-05-21 2003-10-14 3Com Corporation Device and method for compensating or creating doppler effect using digital signal processing
US20090180524A1 (en) * 2008-01-14 2009-07-16 Xinyu Wang Device and method for fast transition from preamble synchronization to data demodulation in direct sequence spread spectrum (DSSS) communications

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6633617B1 (en) * 1999-05-21 2003-10-14 3Com Corporation Device and method for compensating or creating doppler effect using digital signal processing
US20090180524A1 (en) * 2008-01-14 2009-07-16 Xinyu Wang Device and method for fast transition from preamble synchronization to data demodulation in direct sequence spread spectrum (DSSS) communications

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
JOHNSON M et al. "Improved Doppler tracking and correction for underwater acoustic communications". IEEE International Conference on Acoustics, Speech, and Signal Processing, 1997. ICASSP-97, Munich, Germany 21-24 April 1997, VOL: 1 Pags: 575 - 578. Apartados 1 y 2. *
PÉREZ, M.C et al. "Efficient Hardware Implementation for Detecting CSS-based Loosely Synchronous codes in a Local Positioning System". Proceedings of 14th IEEE Conference on Emerging Technologies and Factory Automation, Mallorca, Spain, 22¿26 September 2009.Apartados 1 y 2. *
SHARIF B S et al. "Closed loop doppler tracking and compensation for non-stationary underwater platforms". OCEANS 2000 MTS/IEEE Conference and Exhibition Sept. 11-14, 2000, Piscataway, NJ, USA. VOL: 1 Pags: 371 - 375. *

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Publication number Publication date
ES2484640A2 (en) 2014-08-11
ES2484640B2 (en) 2015-01-20

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