Radar system, in particular motor vehicle radar system
AssigneeRobert Bosch GmbH
InventorsKlaus-Peter Wagner, Klaus Winter, Heinz Pfizenmaier
Life of this patent
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Abstract
In a radar system, which is used particularly in motor vehicles, the angle at which a detected radar target is located are determined by providing that echo signals of the radar target are picked up via at least two reception channels, and their amplitudes are standardized and compared with standardized values, stored in memory, of a duplex antenna graph of the radar system.
Claims10
A method for determining an azimuth and/or elevational angle at which a radar target is located relative to a reference system with a multiple-beam radar system generating at least two radar beams, said method comprising the steps of:
- a) receiving an echo signal from said radar target produced by each of said radar beams in said multiple-beam radar system;
- b) standardizing amplitudes of each of said echo signals received by said multiple-beam radar system to form standardized amplitudes;
- c) storing a standarized antenna graph for each of said radar beams, said standardized antenna graph comprising graph values indicative of a functional relationship between said standardized amplitude of said echo signal and said angle, in a memory of a computer;
- d) comparing the standardized amplitudes of respective ones of said echo signals with the graph values of the respective standarized antenna graphs stored in said memory for said radar beams to obtain comparison results for each of said radar beams;
- e) linking the comparison results which were determined during the comparing of step d) for at least two of said radar beams together to form combined comparison results;
- and
- f) determining a final value of said angle at which said radar target is located from said combined comparison results by means of a minimum or maximum criterion.
A multiple-beam radar system for a motor vehicle comprising
- means for standardizing amplitudes of echo signals produced from a radar target by at least two radar beams propagated toward said radar target;
- means for storing a standardized antenna graph for each of said radar beams propagated from the radar system in a memory;
- means for comparing the standardized amplitudes of each of the echo signals with the respective graph values for the corresponding radar beam, stored in memory, to obtain comparison results for each of said radar beams;
- and
- means for determining, based on comparison results from said means for comparing, a most probable angle at which said radar target is located in relation to said multi-beam radar system.
Dependencies are inferred from the claim text.