A radar presence detection system configured to detect the presence of a human in a space defined by an interior surface of a building through the detection of an oscillation within the building, wherein the oscillation is a vital sign, the radar detection system comprising: an accelerometer attached to the building and configured to detect structural vibration waves; a radar configured to transmit a monitoring wave and receive a reflected wave; and a vital sign processing unit configured to receive a reflected wave signal from the radar indicative of the reflected wave, and a vibration wave signal indicative of the structural vibration wave, the processing unit including: a filter configured to receive a first signal indicative of the reflected wave signal and output a vital sign reflected wave signal which is a filtered reflected wave signal spanning a frequency range indicative of an oscillation within the building, an adaptive filter configured to receive a second signal indicative of the structural vibration wave signal and output a focused vibration signal spanning the frequency range for the cancellation of vibration noise, a summation module configured to receive the vital sign reflected wave signal and the focused vibration signal, subtract the focused vibration signal from the vital sign reflected wave signal, and output a corrected vital sign signal, and a detector configured to receive the corrected vital sign signal and output an oscillation signal indicative of at least the detection of the oscillation; wherein the accelerometer and the radar are mounted to the interior surface of the building at different locations. an accelerometer attached to the building and configured to detect structural vibration waves; a radar configured to transmit a monitoring wave and receive a reflected wave; and a vital sign processing unit configured to receive a reflected wave signal from the radar indicative of the reflected wave, and a vibration wave signal indicative of the structural vibration wave, the processing unit including: a filter configured to receive a first signal indicative of the reflected wave signal and output a vital sign reflected wave signal which is a filtered reflected wave signal spanning a frequency range indicative of an oscillation within the building, an adaptive filter configured to receive a second signal indicative of the structural vibration wave signal and output a focused vibration signal spanning the frequency range for the cancellation of vibration noise, a summation module configured to receive the vital sign reflected wave signal and the focused vibration signal, subtract the focused vibration signal from the vital sign reflected wave signal, and output a corrected vital sign signal, and a detector configured to receive the corrected vital sign signal and output an oscillation signal indicative of at least the detection of the oscillation; wherein the accelerometer and the radar are mounted to the interior surface of the building at different locations. a filter configured to receive a first signal indicative of the reflected wave signal and output a vital sign reflected wave signal which is a filtered reflected wave signal spanning a frequency range indicative of an oscillation within the building, an adaptive filter configured to receive a second signal indicative of the structural vibration wave signal and output a focused vibration signal spanning the frequency range for the cancellation of vibration noise, a summation module configured to receive the vital sign reflected wave signal and the focused vibration signal, subtract the focused vibration signal from the vital sign reflected wave signal, and output a corrected vital sign signal, and a detector configured to receive the corrected vital sign signal and output an oscillation signal indicative of at least the detection of the oscillation; wherein the accelerometer and the radar are mounted to the interior surface of the building at different locations.