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US 12,716,991 B2Granted
Transmit power control for automotive radar sensing
AssigneeNXP B.V.
InventorsAshish Pandharipande, Jeroen Overdevest
Life of this patent
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Abstract
A system and method are presented. A plurality of target objects are determined by a radar system. Each target object in the plurality of target objects is associated with a distance value and a velocity value. A power reduction factor is determined using the distance value and the velocity value associated with each target object of the plurality of target objects. A second radar signal is transmitted at a second power level determined by the power reduction factor.
Claims20
A radar system comprising:
- at least one transmitter and at least one receiver, wherein the at least one transmitter and the at least one receiver are configured to transmit and receive radar signals;
- and
- a radar processor configured to:
- transmit, at a first time, a first radar signal at a first power level, wherein the first power level is a maximum power level of signals transmitted by the radar system,
- receive, using the at least one receiver, a first received signal,
- process the first received signal to identify a plurality of target objects, wherein each target object in the plurality of target objects is associated with a distance value and a velocity value,
- determine a power reduction factor that is proportional to a maximum range value of the radar system using the distance value and the velocity value associated with at least one target object of the plurality of target objects, and
- transmit, at a second time after the first time, a second radar signal at a second power level, wherein the second power level is at least partially determined by the power reduction factor and the second power level is less than the first power level.
5 more elements
A system comprising:
- a transmitter;
- a receiver;
- and
- a processor configured to:
- transmit, using the transmitter, a first radar signal at a first power level,
- process a first reflection signal received by the receiver to identify a plurality of target objects,
- determine a first power reduction factor proportional to a maximum range of the system using first data related to at least one of the plurality of target objects, wherein the first power reduction factor is associated with a first angular beam steering direction;
- determine a second power reduction factor proportional to the maximum range value of the system using second data related to a second at least one of the plurality of target objects, wherein the first second power reduction factor is associated with a second angular beam steering direction;
- transmit, using the transmitter, a second radar signal at a second power level in the first angular direction, wherein the second power level is at least partially determined by the first power reduction factor;
- and
- transmit, using the transmitter, a third radar signal at a third power level in the second angular direction, wherein the third power level is at least partially determined by the second power reduction factor.
8 more elements
A method comprising:
- determining a plurality of target objects by an automotive radar system, wherein each target object in the plurality of target objects is associated with a distance value and a velocity value,
- determining a power reduction factor proportional to a maximum range value of the automotive radar system using the distance value and the velocity value associated with each target object of the plurality of target objects;
- and
- transmitting a second radar signal at a second power level determined by the power reduction factor.
1 more element
Dependencies are inferred from the claim text.