Virtual radar configuration for 2D array
First Claim
1. A radar sensing system for a vehicle, the radar sensing system comprising:
- a plurality of transmitters configured for installation and use on a vehicle, and configured to transmit radio signals;
a plurality of receivers configured for installation and use on the vehicle, and configured to receive radio signals that include transmitted radio signals transmitted by the plurality of transmitters and reflected from objects in an environment; and
a plurality of antennas, wherein the plurality of antennas comprises a plurality of receive antennas and a plurality of transmit antennas, wherein the antennas of the plurality of antennas are arranged with spacings between adjacent antennas of greater than a half wavelength (λ
/2) apart, wherein the arrangements of the antennas produce a virtual receive array with virtual antennas spaced no more than λ
/2 apart, and wherein the spacings of the transmit antennas and the receive antennas suppress grating lobes in the resulting virtual receive array.
1 Assignment
0 Petitions
Accused Products
Abstract
A radar sensing system for a vehicle includes a plurality of transmitters, a plurality of receivers, and a plurality of receive and transmit antennas. The plurality of transmitters are configured for installation and use on a vehicle, and operable to transmit radio signals. The plurality of receivers are configured for installation and use on the vehicle, and operable to receive radio signals which include transmitted radio signals reflected from objects in the environment. The plurality of receive antennas and the plurality of transmit antennas are arranged in a selected configuration to provide a quantity of receive antennas and transmit antennas for a desired level of two-dimensional angle capability for a given board size.
259 Citations
23 Claims
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1. A radar sensing system for a vehicle, the radar sensing system comprising:
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a plurality of transmitters configured for installation and use on a vehicle, and configured to transmit radio signals; a plurality of receivers configured for installation and use on the vehicle, and configured to receive radio signals that include transmitted radio signals transmitted by the plurality of transmitters and reflected from objects in an environment; and a plurality of antennas, wherein the plurality of antennas comprises a plurality of receive antennas and a plurality of transmit antennas, wherein the antennas of the plurality of antennas are arranged with spacings between adjacent antennas of greater than a half wavelength (λ
/2) apart, wherein the arrangements of the antennas produce a virtual receive array with virtual antennas spaced no more than λ
/2 apart, and wherein the spacings of the transmit antennas and the receive antennas suppress grating lobes in the resulting virtual receive array. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A radar sensing system for a vehicle, the radar sensing system comprising:
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a plurality of transmitters configured for installation and use on a vehicle, and configured to transmit radio signals; a plurality of receivers configured for installation and use on the vehicle, and configured to receive radio signals that include transmitted radio signals transmitted by the plurality of transmitters and reflected from objects in an environment; and a plurality of antennas, wherein the plurality of antennas comprises a plurality of receive antennas and a plurality of transmit antennas, wherein the antennas of the plurality of antennas are arranged with spacings between adjacent antennas of greater than a half wavelength (λ
/2) apart, and wherein the arrangements of the antennas produce a virtual receive array with virtual antennas spaced no more than λ
/2apart; andwherein the receive antennas and transmit antennas are arranged as combinations of sub-arrays, and wherein the combinations of sub-arrays are selectively (i) processed independently for target detection and angle measurement, or (ii) combined coherently to form a composite antenna response prior to detection and/or angle measurement.
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12. A radar sensing system for a vehicle, the radar sensing system comprising:
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a plurality of transmitters configured for installation and use on a vehicle, and configured to transmit radio signals; a plurality of receivers configured for installation and use on the vehicle, and configured to receive radio signals that include transmitted radio signals transmitted by the plurality of transmitters and reflected from objects in an environment; a plurality of receive antennas arranged as a two-dimensional (2D) array of receive antennas; a plurality of transmit antennas arranged as at least two linear arrays of transmit antennas, and wherein the receive antennas and the transmit antennas are arranged with spacings between antennas of greater than a half wavelength (λ
/2) apart, and wherein the arrangements of the receive antennas and the transmit antennas produce a 2D virtual receive array with virtual antennas spaced no more than λ
/2apart. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A radar sensing system for a vehicle, the radar sensing system comprising;
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a plurality of transmitters configured for installation and use on a vehicle, and configured to transmit radio signals; a plurality of receivers configured for installation and use on the vehicle, and configured to receive radio signals that include transmitted radio signals transmitted by the plurality of transmitters and reflected from objects in an environment; a plurality of receive antennas arranged as a two-dimensional (2D) array of receive antennas; a plurality of transmit antennas arranged as at least two linear arrays of transmit antennas, and wherein the receive antennas and the transmit antennas are arranged with spacings between antennas of greater than a half wavelength (λ
/2) apart, and wherein the arrangements of the receive antennas and the transmit antennas produce a 2D virtual receive array with virtual antennas spaced no more than λ
/2apart; andwherein the receive antennas and the transmit antennas are arranged as combinations of sub-arrays, and wherein the combinations of sub-arrays are selectively (i) processed independently for target detection and angle measurement, or (ii) combined coherently to form a composite antenna response prior to detection and/or angle measurement.
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19. A radar sensing system for a vehicle, the radar sensing system comprising:
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a plurality of transmitters configured for installation and use on a vehicle, and configured to transmit radio signals; a plurality of receivers configured for installation and use on the vehicle, and configured to receive radio signals that include transmitted radio signals transmitted by the plurality of transmitters and reflected from objects in an environment; a plurality of receive antennas comprising receive antennas arranged as a two-dimensional (2D) receiver antenna array selectively and irregularly filled with antennas; a plurality of transmit antennas comprising transmit antennas arranged as at least two linear arrays of transmit antennas; and wherein the arrangements of the receive antennas and the transmit antennas produce a 2D virtual receive array irregularly filled with virtual receivers to select a particular asymmetrical horizontal and vertical angle capability. - View Dependent Claims (20, 21, 22, 23)
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Specification