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Patent Agency Ranking
公开(公告)号：DE68902632T2
公开(公告)日：1993-04-01
申请号：DE68902632
申请日：1989-12-11
Applicant: SEXTANT AVIONIQUE
Inventor： COMBE HUBERT , MORBIEU BERTRAND
Abstract: The incident beam (3) of a laser anemometer of known type is intercepted by two discs (91, 92) having the same axis, which are driven in rotation about this axis. The two discs are provided with transparent and reflecting sectors arranged so that the incident beam successively adopts three different paths (3x, 3y, 3z). The axis common to the two discs intercepts the axis of the incident beam (3). Mirrors (not shown) permit the direction of each one of the paths in directions which are orthogonal in pairs and which define a trirectangular reference system, in which the three components of the velocity may be successively measured. … The anemometer of the invention is applied in particular to the measurement of the three components of the air speed of an aircraft in relation to still air. … …
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公开(公告)号：DE68902632D1
公开(公告)日：1992-10-01
申请号：DE68902632
申请日：1989-12-11
Applicant: SEXTANT AVIONIQUE
Inventor： COMBE HUBERT , MORBIEU BERTRAND
Abstract: The incident beam (3) of a laser anemometer of known type is intercepted by two discs (91, 92) having the same axis, which are driven in rotation about this axis. The two discs are provided with transparent and reflecting sectors arranged so that the incident beam successively adopts three different paths (3x, 3y, 3z). The axis common to the two discs intercepts the axis of the incident beam (3). Mirrors (not shown) permit the direction of each one of the paths in directions which are orthogonal in pairs and which define a trirectangular reference system, in which the three components of the velocity may be successively measured. … The anemometer of the invention is applied in particular to the measurement of the three components of the air speed of an aircraft in relation to still air. … …
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公开(公告)号：FR2761162B1
公开(公告)日：1999-06-04
申请号：FR9703256
申请日：1997-03-18
Applicant: SEXTANT AVIONIQUE
Inventor： BRUEL CHRISTINE , COMBE HUBERT
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公开(公告)号：FR2761162A1
公开(公告)日：1998-09-25
申请号：FR9703256
申请日：1997-03-18
Applicant: SEXTANT AVIONIQUE
Inventor： BRUEL CHRISTINE , COMBE HUBERT
Abstract: The device for measuring speed by the Doppler effect comprises a laser (10) emitting a light beam through a reference material. The speed is determined by the difference in frequency between the emitted beam and the beam which has passed through the reference material. In the channel which lies between the output (12) of the laser source (10) and the objective (28) of the device transmitting the light beam through the reference material, the beam is conveyed by an optical fibres (11,14,26). An optical separator with an optical fibre (18), such as a circulator, directs the beam towards the objective lens (28). The light signal returning from the circulator is directed towards a mixer of a coupler (32).
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公开(公告)号：DE19501879A1
公开(公告)日：1996-07-25
申请号：DE19501879
申请日：1995-01-23
Applicant: SEXTANT AVIONIQUE
Inventor： PONCELET PHILIPPE , DAYOT ALAIN , COMBE HUBERT
Abstract: The method uses a Doppler radar system (3) to provide horizontal speed data for two inertial navigation systems (1, 2) which are periodically and alternately recalibrated by a global positioning system (GPS). The coordinates expressed by the GPS (4) and the inertial navigation systems are compared (5, 6) and an alarm sounds if a threshold difference is exceeded. An altitude barometer (8) measures the 2-coordinate which is compared (7) with the GPS for a similar threshold difference. The height is checked at certain points by a radio transponder (9), adjusted (10) for local terrain and compared (12) with the altitude barometer to recalibrate the latter. A second ground-based GPS receiver at a known position compares its position with the GPS position and informs the aircraft of the lack of GPS availability of a discrepancy occurs.
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