| 摘要 |
A radar system and method for determining location of targets, wherein the energy reflected from an object is received by the omnidirectional antenna elements and the received RF signal is downconverted to an intermediate frequency (IF) signal. The IF signals are digitized. The digitized IF signals received at the first omnidirectional antenna are digitally processed so as to form modal beams with opposite phase slope as output signals. The digitized IF signal received at the second omnidirectional antenna is digitally processed as to form a reference signal of phase reference. Phase differences between the signals and the reference signals are determined, such that each phase difference includes a first component proportional to the azimuth of the arriving signal and a second component corresponding to the elevation of the arriving signal, from which the azimuth and the elevation of the arriving signal can be extracted. |
