Vehicular radar sensing system with noise cancellation element

A vehicular radar sensing system, the vehicular radar sensing system comprising:

• a radar sensor disposed at a vehicle equipped with the vehicular radar sensing system;
• wherein the radar sensor is operable to capture radar data;
• wherein the radar sensor comprises (i) a plurality of transmitters that transmit radio signals and (ii) a plurality of receivers that receive radio signals;
• wherein the radar sensor comprises a configurable delay element operable to delay a signal by a configurable amount;
• an electronic control unit (ECU) comprising electronic circuitry and associated software;
• wherein radar data captured by the radar sensor is transferred to the ECU;
• wherein the electronic circuitry of the ECU comprises a data processor;
• wherein the ECU is operable to process radar data captured by the radar sensor and transferred to the ECU;
• wherein the configurable delay element adds a delay to a reference signal, and wherein the delay is based on correlated noise comprising phase noise present in both the reference signal and the received radio signals;
• wherein the vehicular radar sensing system mixes the delayed reference signal with radio signals received by the plurality of receivers;
• and
• wherein the vehicular radar sensing system, via processing at the data processor of received radio signals mixed with the delayed reference signal, detects presence of an object.