| 摘要 |
PCT No. PCT/IT89/00002 Sec. 371 Date Jun. 29, 1990 Sec. 102(e) Date Jun. 29, 1990 PCT Filed Jan. 16, 1989 PCT Pub. No. WO89/06808 PCT Pub. Date Jul. 27, 1989.The space ahead of a moving vehicle is irradiated in sectors (A-G) by a plurality of CW solid state radar devices mounted as an array across the front of the vehicle, such that adjacent lobes of each beam may overlap. The radar signal comprises a CW beam modulated intermittently by a slightly offset frequency to produce 'pulses' which when reflected from obstacles within respective sectors (A-G) are detected by mixer diodes in one, or two adjacent radar devices after a time delay which, measured, yields a distance to the obstacle. Obstacles so detected may be displayed in two dimensions within their respective sector (A-G) on a display projected onto the windscreen.
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