Communications: directive radio wave systems and devices (e.g. – Return signal controls external device – Radar mounted on and controls land vehicle
Reexamination Certificate
2007-01-16
2007-01-16
Tarcza, Thomas H. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Return signal controls external device
Radar mounted on and controls land vehicle
C342S128000, C342S134000
Reexamination Certificate
active
11392582
ABSTRACT:
An on-vehicle radar system capable of detecting a range error from range data based on an echo from a target (6). Range error is detected when amplitudes of beat frequency components in two adjacent range gates are substantially equal. The system includes a transmitting unit (1, 2, 4, 5) for radiating a modulated wave having frequency increasing and decreasing repetitively after pulse modulation, a receiving unit (8, 9, 10, 11, 12) for receiving the echo, and an arithmetic unit (13) for detecting a range error ascribable to aberration of modulation band width due to frequency increase and decrease of transmission wave (W1) by comparing a range corresponding to the range gate with that determined from a frequency difference between transmission wave and echo. The arithmetic unit (13) detects the range error on the basis of frequency difference components having substantially same amplitudes in adjacent range gates.
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patent: 6384768 (2002-05-01), Kai
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Barker Matthew M.
Mitsubishi Denki & Kabushiki Kaisha
Sughrue & Mion, PLLC
Tarcza Thomas H.
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