Successive signal interference mitigation

A radar sensing system for a vehicle, the radar sensing system comprising:

• a transmit pipeline comprising a transmitter configured for installation and use on a vehicle and configured to transmit radio signals;
• a receive pipeline comprising a receiver configured for installation and use on the vehicle, and further configured to receive radio signals, wherein the received radio signals include reflected radio signals that are transmitted radio signals reflected from objects in the environment;
• an interference mitigation processor;
• wherein the receiver is further configured to down-convert and digitize the received radio signals to produce a baseband sampled stream;
• wherein, responsive to processing by the interference mitigation processor of the baseband sampled stream, the interference mitigation processor produces a second received radio signal that includes reflected radio signals that are transmitted radio signals reflected from a first object in the environment;
• wherein the interference mitigation processor is further configured to use the second received radio signal to remove selected samples from the baseband sampled stream that are attributed to radio signals reflected from the first object to produce a modified baseband sampled stream where the effect of the first object has been removed;
• and
• wherein the receiver is further configured to use the modified baseband sampled stream to detect a second object that is more distant than the first object.

A method for removing interference from a radio signal received by a vehicle radar sensing system, said method comprising:

• providing a radar sensing system comprising a transmitter configured for installation and use on a vehicle and configured to transmit radio signals, and a receiver configured for installation and use on the vehicle and configured to receive radio signals, wherein the received radio signals include reflected radio signals that are the transmitted radio signals reflected from objects in the environment;
• down-converting and digitizing the received radio signals to produce a baseband sampled stream;
• determining estimates for reflected radio signals associated with one or more selected objects at one or more ranges, and determining estimates for parameters of the corresponding reflected radio signals, and generating attenuated baseband complex samples corresponding to those one or more selected objects;
• modifying the baseband sampled stream based on the attenuated baseband samples corresponding to the one or more selected objects to remove the effect of those one or more selected objects from the modified baseband sampled stream;
• and
• detecting, with the modified baseband sampled stream, at least one more additional object.