摘要:
There is disclosed a method for filtering a signal y , the signal y being the reflection of a signal s emitted by a radar, the signal s having been reflected by a target. The method comprises a step of receiving the signal y and a step of estimating a filter w to be applied to the signal y , the filter w being compensated for an unwanted distorsion din the emitted signal s. Application : radars
摘要:
There is disclosed a method for filtering sea clutter in a radar echo using a hydrographic model. The method comprises the following steps : determination of parameter values of the hydrographic model using the radar echo; estimation of the sea clutter corresponding to the sea surface as deduced from the hydrographic model; filtering of the estimated sea clutter from the radar echo. Application : radar detection.
摘要:
There is disclosed an apparatus and a method for guidance of a projectile. The method for guidance of a projectile, includes emission from the launching position of the projectile of beams pointing to the vertexes of a regular polygon, emission from the launching position of a beam encompassing the preceding beams, determination of position of the projectile relative to the beams, the determined position enabling to correct the projectile trajectory to maintain the projectile the closer to the center of the polygon formed by the beams.
摘要:
There is disclosed a planar heat pipe for cooling, which is embedded in a printed circuit board for cooling of heat-dissipating components (13). The planar heat pipe includes two panels (1, 2) that are both metal clad on one side (4, 5), at least one of the panels (1, 2) being grooved (9) on its metal clad side, the panels (1, 2) being assembled by their metal clad sides to form a sealed cavity (8), the cavity (8) being filled with a fluid (10), the fluid (10) circulating by capillary action along the grooves (9) towards zones exposed to heat where it vaporizes.
摘要:
The invention relates to an elevation estimation method and a radar apparatus of the stacked beam type using it. For the accurate determination of the elevation of a object, use is made of interpolation on the basis of object strengths, measured in the different beams. Thus, an object of this invention is a method for estimating an object's elevation comprising: Receptions and associated receiving processing of signal reflected by the object; A beam transformation of said processed received signals into a number of receiving antenna beams which are at least substantially identical in azimuth direction and distributed in elevation direction; An interpolation of the receiving antenna beams, which are provided with a mutual overlap, such as the object's elevation is deduced by standardisation of set of strengths measured along the elevation direction distribution and comparison to pre-defined sets of strengths which have been associated with elevations, the comparison determining a best fitting set. In order to make interpolation also possible for low-flying objects, at least one beam having a negative elevation is provided.
摘要:
This invention relates to distributed single integrated picture method, platform and network for tracking moving objects. More particularly, this invention is adapted to create and maintain a Single Integrated Air Picture (SIAP) by each platform in the distributed network. An object of this invention is a data compression method adapted for tracking system comprising :
the reception of locally acquired data, the prediction of trajectory from these locally acquired data, the calculation of short tracks from these locally predicted trajectories, said short track comprising a vector and a covariance matrix, an artificial measurement computation from each short track.
The data compression method influences the timely availability of the Single Integrated Air Picture (SIAP), and thereby the maintenance of Single Integrated Air Picture (SIAP).
摘要:
This invention relates to elementary and complex coupling devices. In particular, such coupling devices may be used for supporting radar, antenna or optical sensor equipment, notably on vessels. An object of this invention is an elementary coupling device comprising: A means for stiffening 1 the elementary coupling device against torsion, Two means for linking 2' and 2" the means for stiffening 1 to a second object to be coupled 4o, Two first means for hinging 2/4' and 2/4" each means for linking 2' and 2" directly or indirectly on the second object to be coupled 4o at two separate points, Two second means for hinging 1/2' and 1/2" the means for stiffening 1 on each means for linking 2' and 2" at two separate points, Two third means for hinging 1/3', 1/3" the means for stiffening 1 directly or indirectly on a first object to be coupled 3o at two separate points. A further object of this invention is a complex coupling device comprising three of these elementary coupling devices.
摘要:
The invention concerns a method for automatically implanting software functions on a set of processors. The method comprises at least: a step which consists in breaking down the software functions into elementary tasks (SW1, SWk, , SWN); a step which consists in implanting the elementary tasks on the processors (HW1, HW2, HW3, HW4); a step which consists in controlling implantation evaluating parameters whereof a list is pre-established, a penalty being assigned when a parameter does not fulfil a given criterion; a step which consists in calculating implantation cost, said cost being the sum of penalties assigned, the selected implantation being based on said cost. The invention is particularly applicable for systems, such as for example radar systems, comprising a large amount of software.