Back to results
US 2024/0176007 A1Published application
Dual polarization radar
AssigneeNXP B.V.
InventorSaif Alhasson
Life of this patent
Estimating the term…
Abstract
Various embodiments relate to a radar system, including: a transmitter; a transmit antenna connected to the transmitter, wherein the transmit antenna is a circular polarized antenna; a receiver; a receive antenna connected to the receiver, wherein the receive antenna is a dual polarization antenna having a main lobe and ambiguity sidelobes; wherein the radar system is configured to: transmit a first and second radar signal with first and second circular polarizations in first and second modes; receive reflected first and second radar signals; process the received first and second radar signals to detect a target and to produce first and second mode target powers; comparing the first mode target power to the second mode target power to determine which lobe of the antenna in which the target is located.
Claims20
A radar system, comprising:
- a transmitter;
- a transmit antenna connected to the transmitter, wherein the transmit antenna is a circular polarized antenna;
- a receiver,
- a receive antenna connected to the receiver, wherein the receive antenna is a dual polarization antenna having a main lobe and an ambiguity sidelobe, wherein the ambiguity sidelobe is one of a lower ambiguity sidelobe, and an upper ambiguity sidelobe;
- a processor;
- a memory storing instruction, that when executed by the processor, cause the radar system at least to:
- transmit a first radar signal with a first circular polarization in a first mode;
- receive a reflected first radar signal;
- process the received reflected first radar signal to detect a target and to produce a first mode target power;
- transmit a second radar signal with a second circular polarization in a second mode;
- receive a reflected second radar signal;
- process the received reflected second radar signal to detect the target and to produce a second mode target power;
- compare the first mode target power to the second mode target power,
- determine that the target is in the main lobe when the first mode target power and the second mode target power are substantially equal;
- determine that the target is in the upper ambiguity sidelobe when a power in the first mode is higher than the power in second mode;
- and
- determine that the target is in the lower ambiguity sidelobe when the power in the first mode is lower than the power in second mode.
14 more elements
A radar system, comprising:
- a transmitter;
- a transmit antenna connected to the transmitter, wherein the transmit antenna is a dual polarization antenna having a main lobe and an ambiguity sidelobe, wherein the ambiguity sidelobe is one of a lower ambiguity sidelobe, and an upper ambiguity sidelobe;
- a receiver,
- a receive antenna connected to the receiver, wherein the receive antenna is a reconfigurable circular polarized antenna;
- a processor;
- a memory storing instruction, that when executed by the processor, cause the radar system at least to:
- transmit a first radar signal;
- receive a reflected first radar signal with a first circular polarization in a first mode;
- process the received reflected first radar signal to detect a target and to produce a first mode target power;
- transmit a second radar signal;
- receive a reflected second radar signal with a second circular polarization in a second mode;
- process the received reflected second radar signal to detect the target and to produce a second mode target power;
- comparing the first mode target power to the second mode target power;
- determining that the target is in the main lobe when the first mode target power and the second mode target power are substantially equal;
- determining that the target is in the upper ambiguity sidelobe when a power in the first mode is higher than the power in second mode;
- and
- determining that the target is in the lower ambiguity sidelobe when the power in the first mode is lower than the power in second mode.
14 more elements
A radar system, comprising:
- a transmitter;
- a transmit antenna connected to the transmitter, wherein the transmit antenna is a reconfigurable circular polarized antenna;
- a receiver,
- a receive antenna connected to the receiver, wherein the receive antenna is a dual polarization antenna having a main lobe and an ambiguity sidelobe, wherein the ambiguity sidelobe is one of a lower ambiguity sidelobe, and an upper ambiguity sidelobe;
- a processor;
- a memory storing instruction, that when executed by the processor, cause the radar system at least to:
- transmit a first radar signal with a first circular polarization in a first mode;
- receive a reflected first radar signal;
- transmit a second radar signal with a second circular polarization in a second mode;
- and
- receive a reflected second radar signal;
- wherein a field of view of the radar system in the first mode is different from the field of view in the second mode.
9 more elements
A radar system, comprising:
- a transmitter;
- a transmit antenna connected to the transmitter, wherein the transmit antenna is a dual polarization antenna having a main lobe an ambiguity sidelobe, wherein the ambiguity sidelobe is one of a lower ambiguity sidelobe, and an upper ambiguity sidelobe;
- a receiver,
- a receive antenna connected to the receiver, wherein the receive antenna is a reconfigurable circular polarized antenna;
- a processor;
- a memory storing instruction, that when executed by the processor, cause the radar system at least to:
- transmit a first radar signal with a first circular polarization in a first mode;
- receive a reflected first radar signal;
- transmit a second radar signal with a second circular polarization in a second mode;
- and
- receive a reflected second radar signal;
- wherein a field of view of the radar system in the first mode is different from the field of view in the second mode.
9 more elements
Dependencies are inferred from the claim text.