Time synchronization of spatially separated radars

A method of synchronizing two radars, the method comprising:

• transmitting a linear frequency modulated first signal from a first radar among the two radars;
• receiving a first reflection at the first radar based on the first signal, wherein the first reflection is from a target;
• transmitting a linear frequency modulated second signal from a second radar among the two radars;
• receiving a second reflection at the second radar based on the second signal, wherein the second reflection is from the target;
• performing a fast Fourier transform (FFT) on the first reflection and on the second reflection to respectively obtain a first frequency-domain signal and a second frequency-domain signal;
• converting the first frequency-domain signal and the second frequency-domain signal to the time domain to respectively obtain a first time-domain signal and a second time-domain signal;
• processing the first time-domain signal and the second time-domain signal to obtain a time difference in transmission of the first signal and the second signal;
• and
• adjusting the two radars, based on the time difference, to synchronize subsequent transmissions by the two radars.