Virtual beam steering using MIMO radar
AssigneeJun Fang
InventorJun Fang
Life of this patent
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Abstract
Examples disclosed herein relate to a Multiple-Input Multiple-Output (MIMO) radar for virtual beam steering. The MIMO radar has a plurality of transmit antennas and a receive antenna array having a plurality of radiating elements. The MIMO radar also includes a digital signal processor (DSP) configured to synthesize a virtual receive array having N×M receive subarrays from the plurality of transmit antennas and the receive antenna array, where N is the number of transmit antennas and M is the number of receiving elements. Other examples disclosed herein relate to a method of virtual beam steering.
Claims17
A Multiple-Input Multiple-Output (MIMO) radar for virtual beam steering, comprising:
- a plurality of transmit antennas;
- a receive antenna array having a plurality of radiating elements;
- and
- a digital signal processor (DSP) configured to synthesize a virtual receive array having N×M receive subarrays from the plurality of transmit antennas and the receive antenna array, where N is the number of transmit antennas and M is the number of receiving elements, and wherein the virtual receive array is represented by a manifold matrix that is a function of a geometry of the receive antenna array and a carrier frequency and direction of arrival of the plurality of transmit antennas, and the DSP is configured to apply a transformation matrix to the manifold matrix to generate the virtual receive array.
A method of virtual beam steering, comprising:
- synthesizing a virtual receive array having N×M receive subarrays from the plurality of transmit antennas and the receive antenna array, where N is the number of transmit antennas and M is the number of receiving elements, wherein the virtual receive array is represented by a manifold matrix that is a function of a geometry of the receive antenna array and a carrier frequency and direction of arrival of the plurality of transmit antennas, and a transformation matrix is applied to the manifold matrix to generate the virtual receive array;
- and
- performing a linear transformation on the virtual receive array to create virtual beam steering at a predetermined angle.
Dependencies are inferred from the claim text.