Technique for changing a range gate and radar coverage
First Claim
1. A method of providing a detection coverage area in an automotive radar, the method comprising:
- (a) generating a plurality of adjacent receive antenna beams in the detection coverage area; and
(b) defining a shape of the detection coverage area by adjusting a maximum detection range of each of the plurality of adjacent receive antenna beams, wherein at least two of the plurality of adjacent receive antenna beams are provided having a different maximum detection range.
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Accused Products
Abstract
A radar detection process includes computing a derivative of an FFT output signal to detect an object within a specified detection zone. In one embodiment, a zero crossing in the second derivative of the FFT output signal indicates the presence of an object. The range of the object is determined as a function of the frequency at which the zero crossing occurs. Also described is a detection table containing indicators of the presence or absence of an object within a respective radar beam and processing cycle. At least two such indicators are combined in order to detect the presence of an object within the detection zone and with changing range gates in each of the antenna beams the coverage of the detection zone can be varied.
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Citations
5 Claims
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1. A method of providing a detection coverage area in an automotive radar, the method comprising:
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(a) generating a plurality of adjacent receive antenna beams in the detection coverage area; and
(b) defining a shape of the detection coverage area by adjusting a maximum detection range of each of the plurality of adjacent receive antenna beams, wherein at least two of the plurality of adjacent receive antenna beams are provided having a different maximum detection range. - View Dependent Claims (2, 3, 4, 5)
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Specification