Addressing inter-node phase noise in non-coherent radar system

A method of detecting an object with a radar system that includes a first node with a first transmitter and a first receiver and a second node with a second transmitter and a second receiver, the method comprising:

• the second receiver receiving a first received signal from the object resulting from reflection a first transmission by the first transmitter, the first received signal including first phase noise, which is associated with the first transmitter, with a first delay;
• the first receiver receiving a second received signal from the object resulting from reflection of a second transmission by the second transmitter, the second received signal including second phase noise, which is associated with the second transmitter, with a second delay;
• and
• estimating, using a processor, a location of the object relative to the radar system based on the first delay and the second delay by processing the first transmission, the first received signal, the second transmission, and the second received signal to eliminate inter-node phase noise represented by the first phase noise and the second phase noise.

A vehicle, comprising:

• radar system, comprising:
• a first node including a first transmitter and a first receiver;
• a second node, spaced apart from the first node, including a second transmitter and a second receiver, wherein the second receiver receives a first received signal from an object resulting from reflection of a first transmission by the first transmitter, the first received signal including first phase noise, which is associated with the first transmitter, with a first delay, and the first receiver receives a second received signal from the object resulting from reflection of a second transmission by the second transmitter, the second received signal including second phase noise, which is associated with the second transmitter, with a second delay;
• and
• a processor configured to address inter-node phase noise represented by the first phase noise and the second phase noise by processing the first transmission, the first received signal, the second transmission, and the second received signal to eliminate the inter-node phase noise and to estimate a location of the object relative to the radar system based on the first delay and the second delay;
• and
• a vehicle controller configured to augment or automate vehicle operation based on the location of the object.