Communications: directive radio wave systems and devices (e.g. – With particular circuit – For pulse modulation
Patent
1996-07-18
1998-03-24
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
For pulse modulation
342 33, 342 36, G01S 7282
Patent
active
057317844
ABSTRACT:
A radar detection system includes a transmitter and a receiver. The transmitter generates a pulse including a first subpulse generated at a first predetermined frequency and a second subpulse generated at a second predetermined frequency. At least one of the first and second subpulses include a digitally adjusted rise time and fall time, each of the rise time and fall time being separately adjustable independent of the other to provide for the relative lowering of transmission power above and below the first and second predetermined frequencies. The transmitter then transmits generated first and second subpulses at the respective first and second predetermined frequencies, as digitally adjusted in rise and fall time. The radar detection system further includes a receiver for detecting the first transmitted subpulse at the first predetermined frequency for relatively long range radar detection and for detecting the second transmitted subpulse at the second predetermined frequency for relatively short range radar detection.
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patent: 5115243 (1992-05-01), Perry et al.
patent: 5115244 (1992-05-01), Freedman et al.
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patent: 5220331 (1993-06-01), Gunter
Paper entitled "The ARSR-4 High Fidelity Solid State Transmitter" by Messrs. Barron and Schultheis, Westinghouse Electric Corporation; May 1995 .
Allaman Robert S.
Barron Robert R.
Long Robert K.
Schultheis David M.
Northrop Grumman Corporation
Sotomayor John B.
Sutcliff Walter G.
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