CAJ | 학술논문

研究了同型号警戒雷达间同频干扰抑制问题，利用机械扫描警戒雷达扫描周期固定不变的特点，提出了一种新的旋转周期动目标检测( MTI)对消的同频干扰抑制方法。建立了警戒雷达方位扫描周期内的同频干扰模型，分析了常规MTI技术无法消除同频干扰的原因。借鉴传统MTI原理，针对警戒雷达同频干扰在方位扫描周期内慢速且规律性时变的特点，将MTI对消周期扩展为天线旋转周期，从而达到了良好的同频干扰对消效果。理论分析和仿真结果验证了这种旋转周期MTI对消技术在抗同频干扰方面的有效性。
연구료동형호경계뢰체간동빈간우억제문제，이용궤계소묘경계뢰체소묘주기고정불변적특점，제출료일충신적선전주기동목표검측( MTI)대소적동빈간우억제방법。건립료경계뢰체방위소묘주기내적동빈간우모형，분석료상규MTI기술무법소제동빈간우적원인。차감전통MTI원리，침대경계뢰체동빈간우재방위소묘주기내만속차규률성시변적특점，장MTI대소주기확전위천선선전주기，종이체도료량호적동빈간우대소효과。이론분석화방진결과험증료저충선전주기MTI대소기술재항동빈간우방면적유효성。
Suppression of common frequency jamming between same type warning radars is studied. According to the feature of fixed scan cycle of mechanical scanning warning radar,a new rotating cycle moving target de-tection(MTI) cancellation technique against common frequency jamming is presented. Mathematic model for common frequency jamming of warning radar is established,and the reason why conventional MTI technique can-not eliminate common frequency jamming is given. Because common frequency jamming varies slowly and regu-larly,rotating cycle MTI technique extends the MTI cancellation period to antenna rotation period,so as to a-chieve better jamming cancellation effect. Both theoretical analysis and simulation results prove that this new rotating cycle MTI technique is effective in term of common frequency jamming suppression.