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US 11,598,843 B2Granted
Apparatus and method for analyzing radar signals
AssigneeRobert Bosch GmbH
InventorsMichael Schoor, Benedikt Loesch, Hermann Buddendick
Life of this patent
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Abstract
An analysis of radar signals, in particular of radar signals, which are received by a plurality of ULA antennas. By applying different beam formations to the radar signals of the individual ULA antennas, beamforming is used to compensate for dips in the gain.
Claims8
An apparatus comprising:
- a first antenna array having a first plurality of antenna elements, the first antenna array configured to receive a first sequence of radar signals over time via a combination of the first plurality of antenna elements;
- a second antenna array having a second plurality of antenna elements, the second antenna array configured to receive a second sequence of radar signals over time via a combination of the second plurality of antenna elements;
- a first processing device configured to perform a first beam formation on the first sequence of radar signals received by the first antenna array;
- a second processing device configured to perform on the second sequence of radar signals received by the second antenna array a second beam formation that differs from the first beam formation;
- and
- an evaluation device configured to determine an environment by analyzing a combination of the received first and second sequences of radar signals using results of the first and second beam formations;
- wherein the first and second beam formations are performed such that, for those radar signals of the first and second sequences of radar signals that occur simultaneously in a moment of time, maxima of antenna gains over an angular range of the second beam formation are shifted by half of a bin relative to maxima of antenna gains over an angular range of the first beam formation.
4 more elements
A method for analyzing radar signals, the method comprising the following steps:
- receiving a first sequence of radar signals via a combination of a first plurality of antenna elements of a first antenna array;
- receiving a second sequence of radar signals via a combination of a second plurality of antenna elements of a second antenna array;
- performing a first beam formation on the first sequence of radar signals received by the first antenna array;
- performing on the second sequence of radar signals received by the second antenna array a second beam formation that differs from the first beam formation;
- and
- determining an environment by analyzing a combination of the received first and second sequences of radar signals using results of the first and second beam formations;
- wherein the first and second beam formations are performed such that, for those radar signals of the first and second sequences of radar signals that occur simultaneously in a moment of time, maxima of antenna gains over an angular range of the second beam formation are shifted by half of a bin relative to maxima of antenna gains of an angular range of the first beam formation.
4 more elements
An apparatus comprising:
- a number (N) of antenna arrays that each have a respective plurality of antenna elements and that each is configured to receive a respective radar signal, the number being at least three;
- a processing arrangement, wherein the processing arrangement is configured to apply a respective beam formation to each of the respective radar signals received by the respective antenna arrays, such that, for those of the radar signals occurring simultaneously at a moment in time, antenna gains of respective maxima of antenna gains over respective angular ranges of the respective beam formations are shifted by 1/N of a bin relative to one another;
- and
- an evaluation device configured to analyze the received respective radar signals using results of the respective beam formations.
1 more element
Dependencies are inferred from the claim text.