Determining antenna phase center using baseband data
AssigneeTesla, Inc.
InventorsAnand S. Konanur, Atul Salhotra
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Abstract
One or more aspects of the present disclosure relate to the configuration and management of sensor components. More specifically, one or more aspects of the present application relate to the management of the operational parameters of radar sensors mounted on a vehicle. The radar sensors illustratively are configured with multiple input, multiple output based radar components that provide a phased array. A control component obtains and processes the measured complex response of an antenna array and utilizes the processing results to determine the phase center and optimize the operation of the radar sensor components.
Claims20
A method of determining a phase center for a radar-sensor antenna comprising:
- obtaining at least one of a complex baseband response for a transceiver port combination;
- characterizing the at least one complex baseband response as a function of angle as a vector field;
- for a plurality of offsets, generating a set of angular momentum values based on a calculation of an integral of a Laplacian operation as a function of offset;
- determining the offset with a lowest integral of the Laplacian operator over an angular cut;
- and
- identifying the offset with the lowest integral as a phase center of an antenna;
- wherein the antenna is a multiple-input multiple-output array.
A radar-sensor configuration processing system comprising:
- an antenna configured to receive a response;
- and
- a processor, wherein the processor is configured to;
- obtain at least one of a complex baseband response;
- characterize the at least one complex baseband response as a vector field;
- calculate an integral of a Laplacian operator as a function of an offset;
- determine the offset with a lowest integral of the Laplacian operator;
- and
- identify the offset with the lowest integral as a phase center of the antenna.
A vehicle based radar configuration system comprising:
- a vehicle comprising multiple-input multiple-output antenna, wherein the multiple-input multiple-output antenna comprises at least one of an array of waveform generators and at least one of an array of digital receivers;
- and
- a control component comprising a processor, wherein the processor is configured to obtain at least one of a complex base band response and determine a phase center of the multiple-input multiple-output antenna based on a received complex baseband response.
Dependencies are inferred from the claim text.