Communications: directive radio wave systems and devices (e.g. – Return signal controls radar system
Patent
1998-06-01
2000-10-24
Gregory, Bernarr E.
Communications: directive radio wave systems and devices (e.g.,
Return signal controls radar system
342 13, 342 61, 342 70, 342 89, 342 94, 342 95, 342147, 342175, 342189, 342195, 375200, G01S 1300, G01S 1388
Patent
active
061374369
ABSTRACT:
A pseudo-noise-modulated spread spectrum is irradiated undirectedly--or, encoded by different modulation, into mutually displaced spatial sectors--and the energy (20) received after reflection at a potential target (13) is cross-correlated, using the pseudo-noise code which is predetermined at the transmission end, in order to provide a spherical monitoring effect which is continuous but which cannot be located in respect of its origin, to provide a warning in particular for marine craft, land vehicles and aircraft against an attacking guided missile as the target (13) to be repelled, and in order to be able to transfer to a target tracker (12) distance and speed information obtained from the correlation product, with the alarm signal, if the alarm sensor (11) is not itself also used as the tracking sensor.
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Robert c. Dixon, "Spread Spectrum Systems with Commercial Applications",John Wiley & Sons, Inc. 1994, Title Page Only.
Diehl Stiftung & Co.
Gregory Bernarr E.
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