Communications: directive radio wave systems and devices (e.g. – Testing or calibrating of radar system – By monitoring
Patent
1989-06-08
1990-08-07
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Testing or calibrating of radar system
By monitoring
342165, G01S 1300
Patent
active
049471767
ABSTRACT:
A multiple-beam antenna system capable of forming a plurality of beams at one time in different directions. The antenna system has a plurality of element antennas arranged in a predetermined configuration. A signal received by each element antenna is converted to a digital signal which in turn is subjected to a Fourier transform. The Fourier-transformed receiving signal is multiplied with a Fourier-transformed weighting function. The resultant product is subjected to an inverse Fourier transform to be used for calculating an antenna radiation pattern. A holographic multiple-beam antenna is also disclosed.
REFERENCES:
patent: 4532518 (1985-07-01), Gaglione et al.
patent: 4656479 (1987-04-01), Kirimoto et al.
patent: 4825213 (1989-04-01), Smrek
patent: 4866449 (1989-09-01), Gaffney
"Digital Multiple Beamforming Techniques for Radar", A. E. Ruvin, L. Weinberg, IEEE EASCON-78, pp. 152-163.
"Applying Superresolution to Circular Arrays", U. Petri, Pedro de la Fuente, IEEE ISAP '87, pp. 882-885.
"A Multiple Beam Forming Algorithm of the Circular Array Antenna", 2nd Digital Signal Processing Symposium, Dec. 11 & 12, 1987, pp. 151-155.
Fujisaka Takahiko
Inatsune Shigeho
Kondo Michimasa
Ohashi Yoshimasa
Hellner Mark
Mitsubishi Denki & Kabushiki Kaisha
Tarcza Thomas H.
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