Antenna calibration

A computerized method for calibrating a receiver antenna array using a transmitter antenna array comprising:

• automatically initiating calibration in response to a trigger condition;
• receiving frequency-modulated signals at each receiver antenna;
• processing the frequency-modulated signals through matched filters to determine filter responses;
• calculating phase differences for each receiver antenna;
• generating calibration coefficients based on the phase differences;
• and
• adjusting the phase of signals received using the calibration coefficients.

A non-transitory computer storage medium has computer-executable instructions that, upon execution by a processor, cause the processor to at least:

• automatically initiate calibration in response to a trigger condition, wherein calibration involves two or more receiver antennas;
• receive frequency-modulated signals at each receiver antenna, wherein the frequency-modulated signals are transmitted from two or more transmitter antennas;
• process the frequency-modulated signals through matched filters to determine filter responses;
• calculate phase differences for each receiver antenna;
• generate calibration coefficients based on the phase differences;
• and
• adjust the phase of signals received using the calibration coefficients.