Radar apparatus and method for processing radar signal

A radar signal processing method, comprising:

• a transmission signal transmitting step of transmitting a first polarized transmission signal using one or more long-range transmission array antennae and transmitting a second polarized transmission signal using one or more short-range transmission array antennae;
• a reception signal receiving step of receiving a first polarized reception signal and a second polarized reception signal which are received by reflecting the first polarized transmission signal and the second polarized transmission signal from a target by means of one complex array antenna;
• and
• a detecting step of detecting the target using the first polarized reception signal and the second polarized reception signal,
• wherein the first polarized reception signal has a cross polarization characteristic with respect to the second polarized reception signal.

A radar apparatus, comprising:

• a first complex array antenna unit including a first polarization sub array antenna group including one or more first polarization sub array antennae which receive a first polarized reception signal and a second polarization sub array antenna group including one or more second polarization sub array antennae which receive a second polarized reception signal;
• and
• a second complex array antenna unit including a first polarization sub array antenna group including one or more first polarization sub array antennae which receive a first polarized reception signal and a second polarization sub array antenna group including one or more second polarization sub array antennae which receive a second polarized reception signal,
• wherein a distance between the first polarization sub array antenna group of the first complex array antenna unit and the first polarization sub array antenna group of the second complex array antenna unit is longer than a distance between the second polarization sub array antenna group of the first complex array antenna unit and the second polarization sub array antenna group of the second complex array antenna unit.