Efficient near field radar match filter processing

A radar system, comprising:

• a radar array including at least a first radar node and a second radar node, each of the first radar node and the second radar node having a plurality of subnodes;
• and
• a processor configured to:
• determine a first far-field parameter measurement for an object for a first node of the radar using sub-nodes of the first node;
• determine a second far-field parameter measurement for the object for a second node of the radar using sub-nodes of the second node;
• and
• obtain a joint parameter measurement for the object by combining the first far-field parameter measurement with the second far-field parameter measurement by correcting for a near-field phase difference between the first node and the second node.

A vehicle, comprising:

• a radar array including at least a first radar node and a second radar node, each of the first radar node and the second radar node having a plurality of subnodes;
• and
• a processor configured to:
• determine a first far-field parameter measurement for an object for a first node of the radar using sub-nodes of the first node;
• determine a second far-field parameter measurement for the object for a second node of the radar using sub-nodes of the second node;
• obtain a joint parameter measurement for the object by combining the first far-field parameter measurement with the second far-field parameter measurement by correcting for a near-field phase difference between the first node and the second node;
• and
• navigate the vehicle with respect to the object using the joint parameter measurement.