By measuring the slight differences between the original broadcast signal and the signals reflected from aircraft flying in the vicinity, it is possible to plot the position of aircraft on a screen, just as is done with conventional radar.

通过测量原广播信号和附近飞行器反射信号间的细微差别，有可能在屏幕上标绘出飞行器的位置，这和传统雷达的工作原理一样。