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US 5,182,562 AGranted
Forward looking radar
AssigneeDeutsche Forschungsanstalt fur Luft- und Raumfahrt
InventorFranz Witte
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AssigneeDeutsche Forschungsanstalt fur Luft- und Raumfahrt
InventorFranz Witte
Estimating the term…
In a forward looking radar in which from flying or stationary carriers land or marine surfaces in a forward lying sector region are imaged two-dimensionally, an antenna mounted rigidly on a carrier is made up of a plurality of individual elements preferably in the form of horn antennas arranged rectilinearly adjacent each other and in two rows above each other in such a manner that for a predetermined aperture length l of each individual element and for a predetermined spacing of the individual elements the antenna has an antenna length L=n.l/2. By means of the individual elements in each case a transmitting and subsequently a receiving takes place consecutively from the first to the last of the plurality of individual elements. To implement a digital coupling of the individual elements each said element is evaluated separately digitally and by correlation of a specific predetermined reference function a digital processing is carried out for each angular region.
A forward looking radar for two-dimensional imaging of land or marine surfaces including objects detectable there in a forward lying sector region of flying or stationary carriers. wherein an antenna (1) mounted rigidly on a carrier is made up of a plurality (n) of rectilinearly adjacently disposed individual elements (10) in such a manner that the antenna (1) for a predetermined aperture length (l) of each individual element and for a predetermined distance (.DELTA.x with .DELTA.x=l/2) has an antenna length (L) of L=n.l/2, whereby by means of the respective individual elements (10) a transmitting and subsequent receiving takes place consecutively and coherently from the first to the last of the plurality (n) of individual elements (10), for implementing a digital coupling of the individual elements each individual element (10) is separately evaluated digitally and a digital processing is carried out by correlation of a specific predetermined reference function (R(x)) for each angular region.
A forward looking radar for two-dimensional imaging of land or marine surfaces including objects detectable in a forward lying sector region of flying or stationary carriers, comprising;
Dependencies are inferred from the claim text.