Filtering nagc response to noise spikes

A method of controlling the gain in a radar system, the method comprising:

• initializing a noise level in the radar system;
• monitoring a noise channel in the radar system;
• taking a select number of noise level samples in the noise channel for a select sample time period;
• averaging the noise level of the noise level samples in the select sample time period;
• determining if the averaged noise level of the samples is higher than a previous averaged noise level of samples in a sample time period plus a maximum determined increase;
• and
• if the average noise level is higher than the previous averaged noise level plus the maximum determined increase, ignoring the higher average noise sample.

A radar system, the radar system comprising:

• a receiver configured to receive radar signals;
• a transmitter configured to transmit radar signals;
• a noise channel in communication with the receiver, the noise channel configured to monitor the noise in the radar system;
• a control loop configured to adjust the gain of the radar system;
• and
• a gain controller in communication with the noise channel and the control loop, the gain controller configured to control signals to the control loop, the gain controller further configured to ignore noise spikes in the noise channel.