Communications: directive radio wave systems and devices (e.g. – Radar transponder system – Iff or sif
Patent
1989-04-24
1991-05-07
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Radar transponder system
Iff or sif
342 89, 342100, 342111, 342116, G01S 1378
Patent
active
050140612
ABSTRACT:
Apparatus and methods for combining incoherent signals having different carrier frequencies but a common modulation to obtain a coherent summation of the modulations of such signals are described. The apparatus comprises adaptive means of changing the carrier frequencies and corresponding phases of various signals to a common carrier frequency and a common phase, thus enabling the coherent summation of the common modulation and enhancing, thereby, the level of received information content. When the incoherent signals are transponder-signals, radiated from an object or platform in response to a modulated interrogating signal, and are obtained by different frequency offsets from the interrogating signal carrier frequency, the particular offset frequencies being unique to that object or platform, the ability combining of modulations coherently provides a means of unique identification of the object or platform.
REFERENCES:
patent: 3727220 (1973-04-01), Brennan et al.
patent: 4237461 (1980-12-01), Cantrell et al.
patent: 4373190 (1983-02-01), Lewis et al.
patent: 4400700 (1983-08-01), Rittenbach
patent: 4417249 (1983-11-01), Zscheille, Jr.
patent: 4513383 (1985-04-01), Hackett, Jr.
patent: 4616231 (1986-10-01), Autrey et al.
patent: 4622552 (1986-11-01), Andrews et al.
patent: 4626858 (1986-12-01), Copeland
patent: 4641141 (1987-02-01), Masak
patent: 4694298 (1987-09-01), Milan
patent: 4701762 (1987-10-01), Apostolos
patent: 4719466 (1988-01-01), Farina et al.
patent: 4771287 (1988-09-01), Mims
patent: 4847622 (1989-07-01), Maitre et al.
patent: 4879561 (1989-11-01), Inkol
Ghose Rabindra N.
Sotomayor John B.
Tarcza Thomas H.
Technology Research International
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