Designing an antenna array to meet specified performance criteria
First Claim
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1. A method, performed by an antenna array design system, for identifying an arrangement of antenna elements that will meet required performance criteria based on structural constraints, the method comprising:
- receiving input that defines required performance criteria for an antenna array, the required performance criteria including an angle of arrival accuracy and a probability of ambiguous arrival;
receiving input that defines structural constraints for the antenna array, the structural constraints including a number of antenna elements, a field of view, and a maximum distance between any two antenna elements in one dimension;
calculating, based on the structural constraints, a number of samples that are required to achieve the angle of arrival accuracy;
calculating, based on the structural constraints and the number of samples, a minimum signal to noise ratio reduction parameter;
identifying, based on the structural constraints, a search space within which antenna elements of the antenna array will be positioned;
selecting a first arrangement of the number of antenna elements within the search space;
calculating, for each of a number of angles within the field of view, a signal to noise ratio reduction parameter for the first arrangement;
determining that a minimum of the noise ratio reduction parameters calculated for the first arrangement exceeds the minimum signal to noise ratio reduction parameter;
calculating, for each of a number of angles within the field of view, an angle of arrival error resulting from coherent multipath for the first arrangement and generating a sum of the angle of arrival errors for the first arrangement;
determining that the sum of the angle of arrival errors for the first arrangement is less than a corresponding sum of angle of arrival errors for one or more other arrangements of antenna elements; and
generating output that identifies that the first arrangement meets the required performance criteria and provides better multipath resistance than the one or more other arrangements.
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Abstract
An antenna array can be quickly and efficiently designed to meet specified performance criteria. A system can be configured to receive various performance criteria as inputs, and from these inputs, identify how elements of an antenna array should be arranged so that the antenna array will meet the performance criteria. An iterative process can be performed to identify at least one arrangement of elements that will best meet the performance criteria while also complying with specified structural constraints.
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Citations
20 Claims
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1. A method, performed by an antenna array design system, for identifying an arrangement of antenna elements that will meet required performance criteria based on structural constraints, the method comprising:
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receiving input that defines required performance criteria for an antenna array, the required performance criteria including an angle of arrival accuracy and a probability of ambiguous arrival; receiving input that defines structural constraints for the antenna array, the structural constraints including a number of antenna elements, a field of view, and a maximum distance between any two antenna elements in one dimension; calculating, based on the structural constraints, a number of samples that are required to achieve the angle of arrival accuracy; calculating, based on the structural constraints and the number of samples, a minimum signal to noise ratio reduction parameter; identifying, based on the structural constraints, a search space within which antenna elements of the antenna array will be positioned; selecting a first arrangement of the number of antenna elements within the search space; calculating, for each of a number of angles within the field of view, a signal to noise ratio reduction parameter for the first arrangement; determining that a minimum of the noise ratio reduction parameters calculated for the first arrangement exceeds the minimum signal to noise ratio reduction parameter; calculating, for each of a number of angles within the field of view, an angle of arrival error resulting from coherent multipath for the first arrangement and generating a sum of the angle of arrival errors for the first arrangement; determining that the sum of the angle of arrival errors for the first arrangement is less than a corresponding sum of angle of arrival errors for one or more other arrangements of antenna elements; and generating output that identifies that the first arrangement meets the required performance criteria and provides better multipath resistance than the one or more other arrangements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An antenna array design system comprising one or more non-transitory computer readable media storing computer-executable instructions which when executed implement a method for identifying an arrangement of antenna elements that will meet required performance criteria based on structural constraints, the method comprising:
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receiving input that defines required performance criteria for an antenna array, the required performance criteria including an angle of arrival accuracy and a probability of ambiguous arrival; receiving input that defines structural constraints for the antenna array, the structural constraints including a number of antenna elements, a field of view, and a maximum distance between any two antenna elements in one dimension; calculating, based on the structural constraints, a number of samples that are required to achieve the angle of arrival accuracy; calculating, based on the structural constraints and the number of samples, a minimum signal to noise ratio reduction parameter; identifying, based on the structural constraints, a search space within which antenna elements of the antenna array will be positioned; and iteratively evaluating a plurality of possible arrangements of the antenna elements within the search space including, for each possible arrangement; calculating, for each of a number of angles within the field of view, a signal to noise ratio reduction parameter for the arrangement; determining whether a minimum of the noise ratio reduction parameters calculated for the arrangement exceeds the minimum signal to noise ratio reduction parameter; when the minimum of the noise ratio reduction parameters calculated for the arrangement exceeds the minimum signal to noise ratio reduction parameter, calculating, for each of a number of angles within the field of view, an angle of arrival error resulting from coherent multipath for the arrangement and generating a sum of the angle of arrival errors for the arrangement; and determining whether the sum of the angle of arrival errors for the arrangement is less than a corresponding sum of angle of arrival errors for previously evaluated arrangements, and if so, saving the arrangement as a best arrangement. - View Dependent Claims (15, 16, 17, 18)
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19. A method, performed by an antenna array design system, for identifying an arrangement of antenna elements that will meet required performance criteria based on structural constraints, the method comprising:
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receiving input that defines required performance criteria for an antenna array, the required performance criteria including an angle of arrival accuracy and a probability of ambiguous arrival; receiving input that defines structural constraints for the antenna array; calculating, based on the structural constraints, a number of samples that are required to achieve the angle of arrival accuracy; calculating, based on the structural constraints and the number of samples, a minimum signal to noise ratio reduction parameter; identifying, based on the structural constraints, a search space within which antenna elements of the antenna array will be positioned; iteratively evaluating a plurality of possible arrangements of a number of antenna elements within the search space including, for each possible arrangement; calculating, for each of a number of angles, a signal to noise ratio reduction parameter for the arrangement; determining whether a minimum of the noise ratio reduction parameters calculated for the arrangement exceeds the minimum signal to noise ratio reduction parameter; when the minimum of the noise ratio reduction parameters calculated for the arrangement exceeds the minimum signal to noise ratio reduction parameter, calculating, for each of a number of angles, an angle of arrival error resulting from coherent multipath for the arrangement and generating a sum of the angle of arrival errors for the arrangement; and determining whether the sum of the angle of arrival errors for the arrangement is less than a corresponding sum of angle of arrival errors for previously evaluated arrangements, and if so, saving the arrangement as a best arrangement. - View Dependent Claims (20)
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Specification