ES2143417A1 - Sistema de medida de distancias mediante un haz laser modulado con señales seudoaleatorias. - Google Patents

Sistema de medida de distancias mediante un haz laser modulado con señales seudoaleatorias.

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Publication number
ES2143417A1
ES2143417A1 ES009801001A ES9801001A ES2143417A1 ES 2143417 A1 ES2143417 A1 ES 2143417A1 ES 009801001 A ES009801001 A ES 009801001A ES 9801001 A ES9801001 A ES 9801001A ES 2143417 A1 ES2143417 A1 ES 2143417A1
Authority
ES
Spain
Prior art keywords
delay unit
laser beam
beam modulated
correlator
measuring distances
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
ES009801001A
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English (en)
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ES2143417B1 (es
Inventor
Garcia Jose Antonio Sanz
Hernandez Francisco Jose Lopez
Alvarez Jose Raul Vento
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.)
ELAPSA SL
Original Assignee
ELAPSA SL
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Publication date
Application filed by ELAPSA SL filed Critical ELAPSA SL
Priority to ES9801001A priority Critical patent/ES2143417B1/es
Publication of ES2143417A1 publication Critical patent/ES2143417A1/es
Application granted granted Critical
Publication of ES2143417B1 publication Critical patent/ES2143417B1/es
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

Sistema de medida de distancias mediante un haz láser modulado con señales seudoaleatorias. El sistema utiliza la función de correlación entre dos secuencias seudoaleatorias. La correlación se realiza entre la secuencia que modula un láser apuntado sobre la superficie de medida (8) y la recibida después del trayecto óptico correspondiente. La relación entre correlaciones indica el retardo y por tanto la distancia (d) medida. Cuenta con un generador de secuencias seudoaleatorias (2) que recibe una señal de reloj (1) y que se aplica a un modulador y emisor láser (3), así como a un retardador de secuencias (6). Dicho emisor (3) emite hacia la superficie de medida (8) y la correspondiente señal reflejada es captada por un receptor óptico (4) cuya salida, junto con la del retardador (6), se lleva a un correlador (5). Este correlador (5) conecta con un bloque de control y cálculo numérico (7) que a su vez está unido al retardador (6).
ES9801001A 1998-05-13 1998-05-13 Sistema de medida de distancias mediante un haz laser modulado con señales seudoaleatorias. Expired - Fee Related ES2143417B1 (es)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES9801001A ES2143417B1 (es) 1998-05-13 1998-05-13 Sistema de medida de distancias mediante un haz laser modulado con señales seudoaleatorias.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9801001A ES2143417B1 (es) 1998-05-13 1998-05-13 Sistema de medida de distancias mediante un haz laser modulado con señales seudoaleatorias.

Publications (2)

Publication Number Publication Date
ES2143417A1 true ES2143417A1 (es) 2000-05-01
ES2143417B1 ES2143417B1 (es) 2000-12-16

Family

ID=8303770

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9801001A Expired - Fee Related ES2143417B1 (es) 1998-05-13 1998-05-13 Sistema de medida de distancias mediante un haz laser modulado con señales seudoaleatorias.

Country Status (1)

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ES (1) ES2143417B1 (es)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2258639A1 (en) * 1974-01-18 1975-08-18 Thomson Csf Short distance target detection system - uses pulsed semiconductor laser transmission with correlation in receiver
EP0204613A1 (fr) * 1985-05-29 1986-12-10 SEXTANT Avionique Procédé et dispositif pour la mesure du temps de propagation d'une onde
EP0449596A2 (en) * 1990-03-30 1991-10-02 Nkk Corporation Distance measuring method and apparatus therefor
US5233352A (en) * 1992-05-08 1993-08-03 Cournane Thomas C Level measurement using autocorrelation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2258639A1 (en) * 1974-01-18 1975-08-18 Thomson Csf Short distance target detection system - uses pulsed semiconductor laser transmission with correlation in receiver
EP0204613A1 (fr) * 1985-05-29 1986-12-10 SEXTANT Avionique Procédé et dispositif pour la mesure du temps de propagation d'une onde
EP0449596A2 (en) * 1990-03-30 1991-10-02 Nkk Corporation Distance measuring method and apparatus therefor
US5233352A (en) * 1992-05-08 1993-08-03 Cournane Thomas C Level measurement using autocorrelation

Also Published As

Publication number Publication date
ES2143417B1 (es) 2000-12-16

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