Method for distinguishing between at least two targets
AssigneeDeutsche Aerospace AG
InventorDieter Nagel
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Abstract
The present invention relates to a pulse Doppler radar wherein the phase position of the reflected signals is evaluated as the most important component in addition to the amplitude. Thus a very good resolution results in the range direction and in the velocity direction for the detection of multiple target situations. The invention can be employed particularly for a so-called HPRF radar.
Claims8
A method for distinguishing between at least two targets with the aid of a pulse Doppler radar, wherein radar signals reflected from at least one target are evaluated with respect to at least one of their distance direction and their velocity direction, whereupon a conclusion is drawn as to the existence of one or a plurality of targets, comprising:
- evaluating the phase position of a radar signal reflected from at least one target;
- determining from the evaluated phase position an average phase position for one of an adjacent filter and an adjacent range gate, respectively;
- determining deviations of the phase position of the adjacent filter or the adjacent range gate, respectively, from the previously determined average phase position;
- and
- comparing the deviations of the phase position with an associated threshold value and determining a multiple target situation if the deviations of the phase position exceed the associated threshold value.
Dependencies are inferred from the claim text.