Patent ID: 11860294
Assignee: GOOGLE LLC
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 15:
16. A method of operating a radar system with a transmit electromagnetic vector sensor and a receive electromagnetic vector sensor, the method comprising:
transmitting, using a first horizontal antenna of the transmit electromagnetic vector sensor, a first radar transmit signal having a first linear polarization along a first axis;
transmitting, using a first vertical antenna of the transmit electromagnetic vector sensor, a second radar transmit signal having a second linear polarization along a second axis that is orthogonal to the first axis;
receiving, using a second horizontal antenna of the receive electromagnetic vector sensor, a first radar receive signal having the first linear polarization;
receiving, using a second vertical antenna of the receive electromagnetic vector sensor, a second radar receive signal having the second linear polarization; and
receiving, using a loop antenna of the receive electromagnetic vector sensor, a third radar receive signal having a third linear polarization that is different than the first linear polarization and the second linear polarization, the first radar receive signal, the second radar receive signal, and the third radar receive signal each comprising reflected versions of at least one of the first radar transmit signal or the second radar transmit signal, wherein:
the loop antenna is positioned between the first vertical antenna and the second vertical antenna such that a third axis that is parallel to the first axis intersects the loop antenna, the first vertical antenna, and the second vertical antenna; and
the loop antenna is positioned between the first horizontal antenna and the second horizontal antenna such that a fourth axis that is parallel to the second axis intersects the loop antenna, the first horizontal antenna, and the second horizontal antenna.