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AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorsMichael C. Wicks, Scott M. Bolen, Russell D. Brown
Estimating the term…
Spatial-temporal waveform diversity methods vary or modulate the far-field radiated waveform of a radar and/or communication antenna as a function of look direction (sidelobe structure). Radar detection performance and angle of arrival estimation are enhanced to deny a coherent reference to non-cooperative bistatic radars and coherent repeater jammer systems. In the most general case, the spatial-temporal modulated waveform varies as a function of angle, based upon the principles of multi-dimensional Fourier synthesis. Spatial-temporal denial is achieved with as few as two auxiliary antennas bracketing a main antenna. The same methods for spatial-temporal waveform diversity can also embed communications signals into the transmitted radar waveform for one-way simulcast of both waveform types. These same directionally dependent simulcast waveforms can incorporate navigation signals for enhanced precision engagement.
A method of substantially preventing the interception of information associated with radar or communication waveforms that comprise a main signal and a plurality of spatial and temporal sidelobe signals, said method comprising:
A method of substantially preventing the acquisition and use of radar or communication waveforms that comprise a main signal and a plurality of spatial and temporal sidelobe signals, said method comprising:
Apparatus for denying the acquisition and use of radar or communication waveforms comprising a main signal and a plurality of sidelobe signals, said apparatus comprising a multichannel transmit antenna system that further comprises at least two auxiliary antenna elements carrying spatial-temporal sidelobe information to accompany the transmission of a main antenna carrying said main signal.
Dependencies are inferred from the claim text.