CAJ | 학술논문

如何有效剔除二次雷达系统中存在的干扰目标，提升设备的处理能力和效率，一直是系统最关注的方向之一。区别于传统信道接收机灵敏度简单调节的方法，提出了一种基于可编程门阵列( FPGA)实时计算目标应答信号强度的方法，通过设置有效应答信号范围，在应答脉冲处理阶段剔除时间灵敏度控制( STC)门限外由多径及异步等引起的干扰脉冲，减少了后期处理的信息数据，提升了系统效率和系统的多目标处理能力。通过外场实验验证，该方法能有效减少二次雷达系统内70%的虚警目标。
여하유효척제이차뢰체계통중존재적간우목표，제승설비적처리능력화효솔，일직시계통최관주적방향지일。구별우전통신도접수궤령민도간단조절적방법，제출료일충기우가편정문진렬( FPGA)실시계산목표응답신호강도적방법，통과설치유효응답신호범위，재응답맥충처리계단척제시간령민도공제( STC)문한외유다경급이보등인기적간우맥충，감소료후기처리적신식수거，제승료계통효솔화계통적다목표처리능력。통과외장실험험증，해방법능유효감소이차뢰체계통내70%적허경목표。
How to effectively eliminate interference targets existing in secondary radar and improve equip-ment processing capability and effectiveness is the orientation of system design concerned. Different from the traditional method of simple channel receiver sensitivity adjustment,this paper proposes a method of re-al-time calculation of the target response intensity based on Field Programmable Gate Array( FPGA) . By setting the effective response signal range and eliminating the multipath and asynchronous interference pul-ses outside the Sensitivity Time Control( STC) threshold in reply pulse processing stage,the amount of in-formation data is reduced,the system efficiency and multi-target processing capability are improved. Field test shows that this method can effectively reduce 70% of the false targets in the secondary radar systems.