Low angle radar
AssigneeInternational Standard Electric Corporation
InventorPaul Barton
Life of this patent
Estimating the term…
Abstract
A receiving arrangement for a pulse radar tracker facilitating low elevation angle tracking. The received signals are sampled along the focal plane of the receiving antenna system aperture. Range gating at IF and delay line serialization are provided to generate a simulated (synthetic) scan of the aforementioned aperture plane in the form of a coherent signal waveform. The main lobe of a multipath (ground reflection in the elevation case) is substantially eliminated by the time gating and filtering is provided to greatly reduce the corresponding sidebands. Desired (direct) received signals are substantially unaffected.
Claims7
A receiving system for a pulse radar system comprising:
- range gate controlled means for simultaneously sampling the return signal distribution across a predetermined portion of the receiving aperture;
- means for combining in time distributed order, said combined samples producing a coherent signal waveform corresponding to a time scan of the received signal distribution across said predetermined aperture portion and having a signal spectrum which is representative of said aperture distribution;
- and means for filtering said waveform such as to attenuate the edges of the signal spectrum.
Dependencies are inferred from the claim text.