ABSTRACT Node, mesh communication network and routing reconfiguration method The invention relates to a module (30) equipping a node (Ni) of a mesh communication network (10), identified on said network by a logic number and including an input and/or output port (51 to 54), which is characterized by: - co...

The invention relates to a towing device intended to equip the deck of a ship (10) and comprising a winch (16) a cable (14) and a fairlead (20) the cable (14) circulating in the fairlead (20) under the action of the winch (16) the fairlead (20) comprising a frame (21) and at least first and second sectors the sector...

The invention relates to a data processing .method for a .. multistatic radar system comprising a plurality of transmitters and receivers, each receiver being associated with one or more transmitters so as to form one or more bistatic bases According to the invention, the method involves producing and sustaining mul...

ABSTRACT Image compression method comprising the following steps applied to at least one image (I): • Decorrelating (101) the image (I) by applying thereto a mathematical transform so as to obtain a set of coefficients, • Decomposing (102) the image (I) into blocks and, for each block of the image (I), • Quan...

Sonar system intended for imaging the seabed comprising at least one transmit antenna (10) intended to transmit an acoustic beam covering a useful angular sector (4) delimited by a first direction (d1) and a second direction (d2) the distance between the antenna (10) and the seabed (5) being bigger in the first dire...

The invention relates to a directional multiple-polarisation wide-band antenna network operating in a selected frequency band, characterised in that it comprises at least the following members: N elementary sensors of the convoluted spiral type complementary to a plurality of yams arranged into a structure for obtai...

The invention relates to an accelerometer device for determining the acceleration of an object to which the accelerometer device is mechanically connected, along 3 axes X, Y and Z of a main orthonormal reference system comprising three axes X, Y and Z. Said object is subjected to a surrounding pressure and comprises...

The general field of the invention is that of methods of displaying an "attitude director indicator" in a head viewing system for aircraft comprising: - a head support (C) bearing a viewing device (V); - a detection of posture (DDP); - sensors for detecting the various parameters defining the attitude of the sai...

The compact thermoelastic actuator (15) includes at least two identical force pieces (10a, 10b, 10c, 1Od) and a securing piece (11), the securing piece having a coefficient of thermal expansion less than the coefficient of thermal expansion of the force pieces. The force pieces (10a, 10b, 10c, l0d) are mounted head-...

The subject of the present invention is a device for permanently maintaining the altitude of a payload the altitude-maintenance energy source of which is practically permanent and extracted from the medium. This device is not very costly to produce and to launch and requires minimum servicing while being able to car...

ijThe invention relates to a computerized system and method for controlling access to a service and/or to a place of the type comprising access management devices (1 to 5) making it possible to deliver to a user an access permission or to permit or validate access by a user to this service and/or to this place. It f...

The invention relates to a device for assisting in the detection of a desired object on the ground said object having a first predetermined height. Said device includes: a display device configured to display an image (12) generated from echos measured by a wave reflection imaging device the image (12) representing ...

The filter of longitudinal axis Z comprises: at least one resonant cavity (11) delimited by walls (10, 14, 15) made of a material that has a non-zero expansion coefficient, a dielectric resonator (16) mounted in the cavity (11) transversally to the axis Z, a mechanical device for compensating at leas...