Research on EMI Suppression Method of Large Multi-array Radar

In order to achieve the detection of broader airspace, large-scale fixed station radar tends to array in multiple structural plane of the same building, which will certainly cause transceiver crosstalk between adjacent radar, resulting in receiver saturation. This will affect the efficiency and detection probability of radar. By coating absorbing material in key area of the structural planes, the interference intensity can be attenuated to the dynamic range of the receiver as the hysteresis loss and natural resonance loss can help suppress creeping wave interference. Setting isolation retaining walls between structural planes will further increase the degree of isolation and reduce the interference intensity to the dynamic range of the receiver. Thus, the EMC of the radar can be enhanced, which makes possible multi-array transceiver time-sharing work and greatly improves the detection range of radar.