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 operable to transmit radio signals;
a plurality of receivers 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; and
a plurality of receive antennas and a plurality of transmit antennas arranged in a selected antenna arrangement, wherein the selected antenna arrangement realizes a virtual receive array with virtual antennas spaced a half wavelength (λ
/2) apart, wherein the selected antenna arrangement comprises transmit antennas and receive antennas with individual spacings greater than λ
/2, wherein spacings between each transmit antenna of the plurality of transmit antennas are a uniform spacing of an integer multiple of λ
/2, wherein spacings between each receive antenna of the plurality of receive antennas are a uniform spacing of a different integer multiple of λ
/2, and wherein the wavelength is defined by the transmitted signal frequency.
2 Assignments
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 MIMO 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.
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Citations
29 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 operable to transmit radio signals; a plurality of receivers 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; and a plurality of receive antennas and a plurality of transmit antennas arranged in a selected antenna arrangement, wherein the selected antenna arrangement realizes a virtual receive array with virtual antennas spaced a half wavelength (λ
/2) apart, wherein the selected antenna arrangement comprises transmit antennas and receive antennas with individual spacings greater than λ
/2, wherein spacings between each transmit antenna of the plurality of transmit antennas are a uniform spacing of an integer multiple of λ
/2, wherein spacings between each receive antenna of the plurality of receive antennas are a uniform spacing of a different integer multiple of λ
/2, and wherein the wavelength is defined by the transmitted signal frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. 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 operable to transmit radio signals; a plurality of receivers 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; and a two-dimensional (2D), multiple-input, multiple-output (MIMO) antenna configuration comprising a plurality of receive antennas and a plurality of transmit antennas, wherein the 2D MIMO antenna configuration realizes a virtual receive array with virtual antennas spaced a half wavelength (λ
/2) apart, wherein at least a portion of the plurality of transmit antennas are arranged in a linear array, wherein each transmit antenna arranged in the linear array is uniformly spaced λ
/2 apart, wherein the plurality of receive antennas are arranged into at least one linear array, wherein spacings between each of the plurality of receive antennas are a uniform spacing of a different integer multiple of λ
/2, and wherein the wavelength is defined by the transmitted signal frequency. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for selecting a two-dimensional angle capability of a radar for a vehicle, the method comprising:
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providing a radar system comprising (i) a plurality of transmitters configured for installation and use on a vehicle, and operable to transmit radio signals, (ii) a plurality of receivers 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, and (iii) a plurality of receive antennas and a plurality of transmit antennas; and selecting an antenna arrangement for the plurality of receive antennas and the plurality of transmit antennas, wherein the selected antenna arrangement realizes a virtual receive sub-array with virtual antennas spaced a half wavelength (λ
/2) apart, wherein the selected antenna arrangement comprises transmit antennas and receive antennas with individual spacings greater than λ
/2, wherein spacings between each of the plurality of transmit antennas are a uniform spacing of an integer multiple of λ
/2, wherein spacings between each of the plurality of receive antennas are a uniform spacing of a different integer multiple of λ
/2, and wherein the wavelength is defined by the transmitted signal frequency. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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Specification