Abstract: The invention relates to a method of generation with progressive prediction of data relating to the meteorological situation around a carrier. It comprises the steps of reading data relating to the speed of the carrier and to the cloud formations, steps of calculating for each cloud formation the geographical position and the vector of voluminal parameters predicted at a given time horizon. The time horizon is dependent for each cloud formation on the speed of the carrier and the distance separating the cloud formation from the carrier. The method also comprises a step of generating a mapping comprising a representation corresponding to the calculated geographical position and to the calculated topology of each cloud formation. The subject of the invention is also an onboard meteorological system with progressive prediction of meteorological situations around a carrier.

Abstract: The present invention relates to a device making it possible to switch from one electric source to another. It comprises two electromechanical relays, each of the two relays being capable of supplying power current coming from one of the two sources. The two relays are connected to one another so that the current supply for controlling one of the relays prevents the current supply for controlling the other relay.

Abstract: The present invention relates to a method for storing measurements of a given type made by a radar, each measurement having been made at a position in a given coordinate system. The method comprises a step of accessing a structured data storage space, each location of which is addressable by a pair of positive integers and each location of which is able to store at least one evolution profile of the measurements of the given type as a function of altitude. It also comprises a meshing step which associates a ground position with a pair of positive integers allowing a location to be addressed. The method also comprises a step of modifying the content of the location with the pair of integers as its address by storing there an evolution profile such that for each ground position sufficiently close to the position associated with the pair and for which a measurement has been made at a certain altitude, the evolution profile provides approximately the measurement made at this altitude.

Abstract: The invention relates to a method for beam formation by calculation. For each defective active module of rank ip, the missing samples of the microwave signal a(îp) are calculated by one or more non-adaptive interpolations using the samples coming from the active modules in nominal operating mode situated in the neighborhood of the defective active modules, the beam being formed as if the interpolated samples a(îp) were the real measurements. In particular, the invention is applicable to the compensation for the effects of failures of one or more active modules distributed over an antenna of a radar with electronic scanning. The method according to the invention can notably be implemented within an airborne weather radar.

Abstract: The invention relates to a frequency dispersive antenna. The antenna comprises at least one top part and one bottom part. The top part and the bottom part comprises radiating waveguides coupled electromagnetically by way of coupling slots to a feed waveguide. The feed waveguide of the top part of the antenna does not comprise any coupling slot over a length L. The length L is chosen so as to achieve an electric length substantially equal to the electric length of the feed guide coupled to the bottom part of the antenna. In particular, the invention applies to the pinpointing of meteorological phenomena over an angular domain greater than the natural width of an airborne antenna.

Abstract: The invention relates to a frequency-dispersive antenna. The antenna comprises radiating waveguides on which are formed slots. The antenna comprises at least one feed waveguide linked by coupling slots to the radiating waveguides. The variation of the pointing direction of the beam from the antenna in at least one plane is obtained by varying the frequency of the wave guided by the feed waveguide. The length of the feed waveguide between the coupling slots of two adjacent radiating waveguides is greater than the distance separating the coupling slots of these two adjacent radiating waveguides. In particular, the invention applies to an airborne antenna suited to the detection and locating of meteorological phenomena.

Abstract: The invention relates to a frequency dispersive antenna comprising radiating waveguides divided into three legs. The indirect angle between the first and second leg is greater than or equal to 90 degrees and less than 180 degrees, the direct angle between the second and third leg being greater than or equal to 90 degrees and less than 180 degrees. The antenna comprises a feed waveguide comprising a stack of elements divided into three adjacent legs, the direct angle between the first and second leg being greater than or equal to 90 degrees and less than 180 degrees, the indirect angle between the second and third leg being greater than or equal to 90 degrees and less than 180 degrees. In particular, the invention applies to an airborne antenna suitable for the detection and for the pinpointing of meteorological phenomena.

Abstract: The invention relates to a frequency-dispersive antenna. The antenna comprises radiating waveguides on which are formed slots. The antenna comprises at least one feed waveguide linked by coupling slots to the radiating waveguides. The variation of the pointing direction of the beam from the antenna in at least one plane is obtained by varying the frequency of the wave guided by the feed waveguide. The length of the feed waveguide between the coupling slots of two adjacent radiating waveguides is greater than the distance separating the coupling slots of these two adjacent radiating waveguides. In particular, the invention applies to an airborne antenna suited to the detection and locating of meteorological phenomena.

Abstract: The invention relates to a frequency dispersive antenna. The antenna comprises at least one top part and one bottom part. The top part and the bottom part comprises radiating waveguides coupled electromagnetically by way of coupling slots to a feed waveguide. The feed waveguide of the top part of the antenna does not comprise any coupling slot over a length L. The length L is chosen so as to achieve an electric length substantially equal to the electric length of the feed guide coupled to the bottom part of the antenna. In particular, the invention applies to the pinpointing of meteorological phenomena over an angular domain greater than the natural width of an airborne antenna.

Abstract: The invention relates to a frequency dispersive antenna comprising radiating waveguides divided into three legs. The indirect angle between the first and the second leg is greater than or equal to 90 degrees and less than 180 degrees, the direct angle between the second and third leg being greater than or equal to 90 degrees and less than 180 degrees. The antenna comprises a feed waveguide comprising a stack of elements divided into three adjacent legs, the direct angle between the first and the second leg being greater than or equal to 90 degrees and less than 180 degrees, the indirect angle between the second and the third leg being greater than or equal to 90 degrees and less than 180 degrees. In particular, the invention applies to an airborne antenna suitable for the detection and for the pinpointing of meteorological phenomena.

Abstract: A device for the operating of an automative cruise control system for an automobile vehicle comprises means to separate the travel of the accelerator pedal into two parts. The depressing of the pedal in the first travel part engages the automotive cruise control system, the pull-back force of the pedal being smaller in the first travel part than in the second travel part. The device can be applied especially to vehicles equipped with means for checking the distance and/or the speed of obstacles located in the path of the vehicle, the pace of these vehicles being regulated or controlled as a function of the information on distance and/or speed given by said means. More generally, it can be applied to any vehicles equipped means of automative cruise control.

Abstract: A device for the operating of an automative cruise control system for an automobile vehicle comprises means to separate the travel of the accelerator pedal into two parts. The depressing of the pedal in the first travel part engages the automotive cruise control system, the pull-back force of the pedal being smaller in the first travel part than in the second travel part. The device can be applied especially to vehicles equipped with means for checking the distance and/or the speed of obstacles located in the path of the vehicle, the pace of these vehicles being regulated or controlled as a function of the information on distance and/or speed given by said means. More generally, it can be applied to any vehicles equipped means of automative cruise control.

Abstract: A method used to increase the ambiguity distance of FSK radars implements a waveform made up of patterns consisting of frequency plateaux whose frequencies are alternately shifted by plus or minus a value ?f?. With this waveform, the method associates processing operations to eliminate ambiguous echoes and image signals. This method has the advantage of not modifying the repetition period of the radar to which it is applied. The method according to the invention can be applied especially to radars in automobiles and especially to anti-collision radars.

Abstract: A method used to increase the ambiguity distance of FSK radars implements a waveform made up of patterns consisting of frequency plateaux whose frequencies are alternately shifted by plus or minus a value ?f?. With this waveform, the method associates processing operations to eliminate ambiguous echoes and image signals. This method has the advantage of not modifying the repetition period of the radar to which it is applied. The method according to the invention can be applied especially to radars in automobiles and especially to anti-collision radars.

Abstract: A device for the operating of an automative cruise control system for an automobile vehicle comprises means to separate the travel of the accelerator pedal into two parts. The depressing of the pedal in the first travel part engages the automative cruise control system, the pull-back force of the pedal being smaller in the first travel part than in the second travel part. The device can be applied especially to vehicles equipped with means for checking the distance and/or the speed of obstacles located in the path of the vehicle, the pace of these vehicles being regulated or controlled as a function of the information on distance and/or speed given by said means. More generally, it can be applied to any vehicles equipped means of automative cruise control.

Abstract: A device to conceal a radar or any other system for the transmission and reception of electromagnetic waves represents, for example, a pattern in relief. The device comprises at least one front part transparent to electromagnetic and optical waves, one rear part transparent to electromagnetic waves facing transmission and/or reception means and a form representing the manufacturer's logo placed between the parts. This form has an cellular structure with RF characteristics close to those of air. That device can be applied especially in radars equipping vehicles.

Abstract: Disclosed is a device to conceal a radar fitted for example into a vehicle. This device bears especially a pattern. A method to make such a device is also disclosed. The device reproduces a given pattern comprising a shiny part. It comprises at least one front part transparent to optic waves and one part having a face with a shiny appearance before the rear face of the front part. The non-shiny part of the pattern covers the rear face of the front part. The invention can be applied especially to radars positioned on the front of vehicles. The cover then reproduces the manufacturer's logo.

Abstract: The disclosure relates to methods and devices for adjusting and setting the alignment of the radio axis of a radar installed on a vehicle with respect to a determined direction. The method, in making use of an adjustment and setting stand comprising a goniometer-responder, consists: in acquiring the angles &agr; and &bgr;, &agr; a being the azimuthal angle at which the radar perceives the goniometer-responder and &bgr; being the angle between the determined direction and the axis of the stand; determining the azimuth &ggr; of the radar by means of the goniometer-responder when the radar, configured in test mode, sends out a continuous frequency; equalizing the azimuth &ggr; with the angle &bgr; by translating the goniometer-responder along its axis of motion; nullifying the angle of azimuth &agr; by actuating the means to adjust the radar in azimuth.

Abstract: A device to conceal a radar fitted into an automobile comprises at least one system of conductive wires perpendicular to the polarization of the wave sent out by the radar and reproducing a given graphic representation The graphic representation may be the automobile manufacturer's logo. The disclosed device can be applied especially to radars positioned in from of vehicles, for example of the ACC type.

Abstract: Disclosed are a method and a device for the removal of ambiguity in distance. The method computes the distance of the targets detected by the radar using several estimation functions (21, 22, 23). When the estimation functions give substantially the same result, the targets are defined as being in the field of non-ambiguous distances and when the estimation functions give different results, the targets are defined as being in the domain of ambiguous distances. Application especially to frequency-shift keying, continuous-wave radar for automobile traffic control.