A method of calibrating a radar detection system , the method comprising: selecting a plurality of location indicators, wherein each of the plurality of location indicators has a location; emitting , with a transmitter of a sensor , a radar signal ( S e ) to the location of each of the plurality of location indicators; reflecting the radar signal off of a target at the location of each of the plurality of location indicators; receiving , with a receiver of the sensor , the radar signal ( S r ) which has been reflected off of the target at the location of each of the plurality of location indicators; communicating , between the sensor and a controller , the location of the target at each of the plurality of location indicators; selecting, with the controller , at least one plurality of locations received from the sensor , wherein the at least one plurality of locations selected with the controller defines a protected region ; and designating , with the controller , the protected region , thereby calibrating the radar detection system such that the radar detection system is capable of detecting an object in the protected region ; wherein selecting the plurality of location indicators comprises moving the target to each of the plurality of location indicators; and wherein selecting the plurality of location indicators comprises performing at least one calibration signal associated with each of the plurality of location indicators, characterised in that : the target performs the calibrations signal; the target is a user; and the at least one calibration signal is selected from the group consisting of: a stop in movement, a movement, and an acoustic emission. selecting a plurality of location indicators, wherein each of the plurality of location indicators has a location; emitting , with a transmitter of a sensor , a radar signal ( S e ) to the location of each of the plurality of location indicators; reflecting the radar signal off of a target at the location of each of the plurality of location indicators; receiving , with a receiver of the sensor , the radar signal ( S r ) which has been reflected off of the target at the location of each of the plurality of location indicators; communicating , between the sensor and a controller , the location of the target at each of the plurality of location indicators; selecting, with the controller , at least one plurality of locations received from the sensor , wherein the at least one plurality of locations selected with the controller defines a protected region ; and designating , with the controller , the protected region , thereby calibrating the radar detection system such that the radar detection system is capable of detecting an object in the protected region ; wherein selecting the plurality of location indicators comprises moving the target to each of the plurality of location indicators; and wherein selecting the plurality of location indicators comprises performing at least one calibration signal associated with each of the plurality of location indicators, characterised in that : the target performs the calibrations signal; the target is a user; and the at least one calibration signal is selected from the group consisting of: a stop in movement, a movement, and an acoustic emission. the target performs the calibrations signal; the target is a user; and the at least one calibration signal is selected from the group consisting of: a stop in movement, a movement, and an acoustic emission. <EOS>