Vehicle-mounted radar deflectors
The present disclosure provides methods and apparatuses that enable a radar system to transmit radar signals into lanes on a roadway in which a vehicle may turn. For example, when a car is making a protected right turn, that is a right turn when there is another vehicle traveling in the same direction in a lane adjacent to the lane of the turning vehicle, a traditional radar may have its view of the lane in which it is turning obscured by the vehicle in the lane adjacent to the lane of the turning vehicle. By using radar deflectors strategically located near the front of the vehicle, the radar signals may be deflected at angles to avoid being obstructed by the vehicle in the lane adjacent to the lane of the turning vehicle.
1. A method comprising:
deflecting a portion of reflected electromagnetic energy received from a first direction by a deflector mounted to a vehicle, wherein the first direction is substantially aligned with a lane of a roadway intersecting a roadway on which the vehicle is traveling; and
receiving the deflected electromagnetic energy in a second direction by a radar located on a top portion of the vehicle.
2. The method of claim 1 , wherein the deflector is a metallic reflector.
3. The method of claim 2 , wherein the metallic reflector causes the first direction to be in a direction directed toward the opposite side of the vehicle compared to the second direction.
4. The method of claim 1 , wherein the deflector is at least one of a diffraction grating and a dielectric.
5. The method of claim 4 , wherein the dielectric causes the first direction to be in a direction directed toward the same side of the vehicle compared to the second direction.
6. The method of claim 1 , wherein the deflector is an active deflector.
7. The method of claim 1 , wherein the first direction is selected based on a given direction that the vehicle is turning.
8. A vehicle system comprising:
a radar deflector unit mounted on a vehicle and near a front of the vehicle, wherein the radar deflector unit is configured to deflect a portion of a reflected radar signal over a first beamwidth; and
a radar reception unit located on a top portion of the vehicle configured to receive the deflected reflected radar signal having a second beamwidth, wherein the first beamwidth and the second beamwidth are non-overlapping.
9. The system of claim 8 , wherein the deflector is a metallic reflector.
10. The system of claim 9 , wherein the metallic reflector causes a direction of the deflection to be directed toward the opposite side of the vehicle compared to a direction of the radar reception.
11. The system of claim 9 , wherein the metallic reflector is located on a top surface of a headlight of the vehicle.
12. The system of claim 8 , wherein the deflector is located within a headlight housing.
13. The system of claim 8 , wherein the deflector is at least one of a diffraction grating and a dielectric.
14. The system of claim 13 , wherein the dielectric causes a direction of the deflection to be directed toward the same side of the vehicle compared to a direction of the radar reception.
15. The system of claim 8 , wherein the deflector is an active deflector.
16. The system of claim 8 , wherein a direction of the deflection is selected based on a given direction that the vehicle is turning.
17. A method comprising:
deflecting a portion of reflected electromagnetic energy with a first beamwidth in a first direction aligned with a driver side of a vehicle by a deflector mounted to the vehicle; and
receiving electromagnetic energy with a second beamwidth by a radar located on a top portion of the vehicle, wherein the electromagnetic energy is received at least in part in a second direction of the deflector mounted proximate to a passenger side of the vehicle, wherein the first beamwidth and the second beamwidth are non-overlapping.
18. The method of claim 17 , wherein the deflector is a metallic reflector.
19. The method of claim 17 , wherein the deflector is an active deflector.
20. The method of claim 17 , wherein the first direction is selected based on a given direction that the vehicle is turning.