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    4.
    发明专利
    未知

    公开(公告)号：DE3786012D1

    公开(公告)日：1993-07-01

    申请号：DE3786012

    申请日：1987-10-06

    Applicant: THOMSON CSF

    Inventor： FOUCHE YVON ,  ELLEAUME PHILIPPE ,  DRABOWITCH SERGE

    IPC: G01R25/00 ,  H03H9/64

    Abstract: PCT No. PCT/FR87/00383 Sec. 371 Date May 31, 1988 Sec. 102(e) Date May 31, 1988 PCT Filed Oct. 6, 1987 PCT Pub. No. WO88/02867 PCT Pub. Date Apr. 21, 1988.The present invention concerns mainly a filter, a phase-measuring device and a method to apply said filter. The main object of the invention is a phase-measuring device. The use of adapted filters (140) enables the increasing of the signal/noise ratio of a received signal. However, if several samples of the signal are sent, each having a different phase, the signal present at the output of the adapted filter at any given instant risks being a mixture of the phase of two successive samples. The use of an odd value filter (141) makes it possible to determine the only instants during which the phase measurement corresponds to the phase of a single sample of the signal. The invention can be applied chiefly to the demodulation, detection or decoding of television and radio broadcasts or phase-modulated data transmissions.

    7.
    发明专利
    未知

    公开(公告)号：IT1212992B

    公开(公告)日：1989-12-07

    申请号：IT6784883

    申请日：1983-08-05

    Applicant: THOMSON CSF

    Inventor： DRABOWITCH SERGE

    IPC: G01S13/28 ,  G01S13/48 ,  H03K

    Abstract: Pulse-compression method employing space-coding, according to which a plurality of pulsed signals are emitted, simultaneously, for a time (1/ DELTA f), at frequencies which are uniformly graded by an increment ( DELTA f), the pulsed signals which are returned by any target being spatially compressed, the compression factor being equal to the number of signals which were emitted simultaneously.

    DISPOSITIF ET PROCEDE DE COMMANDE DE VEHICULES GUIDES
    8.
    发明专利
    DISPOSITIF ET PROCEDE DE COMMANDE DE VEHICULES GUIDES 未知

    公开(公告)号：CA1245749A

    公开(公告)日：1988-11-29

    申请号：CA496471

    申请日：1985-11-28

    Applicant: THOMSON CSF

    Inventor： DRABOWITCH SERGE ,  BARIL MICHEL ,  LE PARQUIER GUY

    IPC: B61L3/12

    Abstract: L'invention se rapporte principalement à un dispositif et un procédé de commande de véhicules guidés. Le dispositif objet de la présente invention comporte des balises passives ainsi que des radars permettant leur détection. La présence ou l'absence de balise permet la commande automatique d'un train, par exemple en vue de l'automatisation de sa conduite. Le dispositif objet de la présente invention utilise des balises rétrodirectives et/ou des balises induisant une rotation de polarisation du rayonnement reçu. L'utilisation des balises rétrodirectives induit un changement de fréquence par effet Doppler du rayonnement réfléchi. Le changement de fréquence Doppler et/ou la rotation de la polarisation du rayonnement améliore le rapport (signal/écho parasite) et/ou la séparation des voies d'émission et de réception. L'invention s'applique principalement à la conduite automatique des trains ou du métro.

    9.
    发明专利
    未知

    公开(公告)号：FR2589011B1

    公开(公告)日：1988-10-14

    申请号：FR8515663

    申请日：1985-10-22

    Applicant: THOMSON CSF

    Inventor： DRABOWITCH SERGE ,  BOUKO JEAN

    IPC: H01Q3/30 ,  H01Q3/38 ,  H01Q21/29

    Abstract: A conical sweep array antenna has a flat antenna structure having a plurality of microstrip sources disposed in a plurality of sections. Preferably, each section includes a plurality of sources. The flat antenna also has at least one source disposed outside any of the sections. A phase-shifting device phase-shifts the plurality of sources to cause a conical sweep pattern of the flat antenna. Also, the phase-shifter device provides a constant phase-shift to the one source which is not disposed in any section. The presence of the nonphase-shifted source improves the radiating diagram of the antenna of the invention, particularly by reducing the coma lobe.

    FILTER, PHASE MEASURING DEVICE AND METHOD IMPLEMENTING SUCH FILTER
    10.
    发明专利
    FILTER, PHASE MEASURING DEVICE AND METHOD IMPLEMENTING SUCH FILTER 未知

    公开(公告)号：AU8039887A

    公开(公告)日：1988-05-06

    申请号：AU8039887

    申请日：1987-10-06

    Applicant: THOMSON CSF

    Inventor： FOUCHE YVON ,  ELLEAUME PHILIPPE ,  DRABOWITCH SERGE

    IPC: G01R25/00 ,  H03H9/64

    Abstract: PCT No. PCT/FR87/00383 Sec. 371 Date May 31, 1988 Sec. 102(e) Date May 31, 1988 PCT Filed Oct. 6, 1987 PCT Pub. No. WO88/02867 PCT Pub. Date Apr. 21, 1988.The present invention concerns mainly a filter, a phase-measuring device and a method to apply said filter. The main object of the invention is a phase-measuring device. The use of adapted filters (140) enables the increasing of the signal/noise ratio of a received signal. However, if several samples of the signal are sent, each having a different phase, the signal present at the output of the adapted filter at any given instant risks being a mixture of the phase of two successive samples. The use of an odd value filter (141) makes it possible to determine the only instants during which the phase measurement corresponds to the phase of a single sample of the signal. The invention can be applied chiefly to the demodulation, detection or decoding of television and radio broadcasts or phase-modulated data transmissions.

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