Communications: directive radio wave systems and devices (e.g. – Determining distance – With frequency modulation
Patent
1998-10-28
2000-09-19
Gregory, Bernarr E.
Communications: directive radio wave systems and devices (e.g.,
Determining distance
With frequency modulation
342104, 342105, 342107, 342109, 342115, 342194, 342195, 342196, G01S 1332
Patent
active
061219177
ABSTRACT:
In an FM-CW radar, a receive section has an array antenna in which a plurality of element antennas are arrayed as receive antennas, and a plurality of mixers for generating a beat signal of each channel from a receive signal for each element antenna, and a signal processing section comprises a first device for performing analog-to-digital conversion of the beat signal of each channel into a digital beat signal of each channel and storing it, a second device for performing a Fourier transform process for the digital beat signal of each channel to obtain Fourier transform data of each channel, a third device for performing a phase shift process according to beam direction angles for the Fourier transform data of each channel and thereafter synthesizing the Fourier transform data of each channel every beam direction angle to obtain Fourier transform data of each beam direction angle, and a fourth device for detecting a range to an object and a relative velocity of the object from the Fourier transform data of each beam direction angle.
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patent: 5361072 (1994-11-01), Barrick et al.
patent: 5625362 (1997-04-01), Richardson
patent: 5652589 (1997-07-01), Ono et al.
patent: 5731778 (1998-03-01), Nakatani et al.
patent: 5751240 (1998-05-01), Fujita et al.
patent: 5892477 (1999-04-01), Wehling
Gregory Bernarr E.
Toyota Jidosha & Kabushiki Kaisha
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