Communications: directive radio wave systems and devices (e.g. – Return signal controls external device – Radar mounted on and controls land vehicle
Patent
1998-01-16
2000-03-28
Lobo, Ian J.
Communications: directive radio wave systems and devices (e.g.,
Return signal controls external device
Radar mounted on and controls land vehicle
342 70, 342158, G01S 1393
Patent
active
060437731
ABSTRACT:
A variable-scanning-speed mechanical driving unit is provided for providing control in such a manner as to acquire data while continuously changing in a range of a scanning angle the direction of an antenna unit for transmission and reception of radio waves. A so-called warning mode which is primarily aimed at the prevention of a collision is set, and a data updating period is shortened by making the scanning speed for transmitted radio waves and received radio waves so relatively high so as to shorten the data updating period. In a case where a so-called follow-up mode which is primarily aimed at follow-up traveling is set, the scanning speed for transmitted radio waves and received radio waves is made relatively low so as to extend the data updating period. Accordingly, the vehicle-mounted radar apparatus can be used as a following-distance warning apparatus or a following-distance controlling apparatus, to make it possible to obtain such as resolutions of the relative distance and relative velocity and a data updating period which are optimally suited for one's own vehicle and a driver in correspondence with the situation during actual use of the apparatus.
REFERENCES:
patent: 5579010 (1996-11-01), Iihoshi et al.
patent: 5652589 (1997-07-01), Ono et al.
patent: 5694130 (1997-12-01), Suzuki et al.
Lobo Ian J.
Mitsubishi Denki & Kabushiki Kaisha
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