Device for position determination by means of radio waves

Details Device for position determination by means of radio waves Device for position determination by means of radio waves

2005-12-13

2005-12-13

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

C342S071000, C342S072000, C343S844000

Reexamination Certificate

active

06975263

ABSTRACT:
A device for determining the position of a vehicle on a roadway by using radio waves which are emitted from the device and reflected by the vehicle and received by at least two array antennas (1, 2) arranged across the roadway, wherein the array antennas (1, 2) comprise a number of antenna elements (5–14), one of the antenna elements in the respective array antenna constituting the phase center (5, 10) of the array antennas, and wherein the antenna elements (5–14) of the array antennas are connected to one another such that the distance (d) between the phase centers (5, 10) of the array antennas (1, 2) included is smaller than half the width of an individual array antenna (1, 2).

REFERENCES:
patent: 4151525 (1979-04-01), Strauch et al.
patent: 5166690 (1992-11-01), Carlson et al.
patent: 5245348 (1993-09-01), Nishikawa et al.
patent: 5270724 (1993-12-01), Ajioka
patent: 5546095 (1996-08-01), Lopez
patent: 5751227 (1998-05-01), Yoshida et al.
patent: 5784022 (1998-07-01), Kupfer
patent: 26 45 058 (1978-04-01), None
patent: B442348 (1985-12-01), None
patent: A1-8600716 (1986-01-01), None
patent: A1-9219021 (1992-10-01), None

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