CAJ | 학술논문

针对双基地机载雷达空时自适应处理难以有效抑制杂波检测目标的问题，提出了一种双基地机载雷达杂波预滤波方法。该方法考虑了实际中载机速度的估计与真实速度的误差，利用雷达系统参数、载机平台速度等信息设计杂波预滤波器抑制大部分杂波，剩余的少量杂波可由发展成熟的空时自适应处理算法进行抑制，进而提高空时自适应处理算法的动目标检测能力。计算机仿真实验表明，该方法能有效地对几种典型几何配置下的双基地机载雷达杂波进行抑制，降低了杂波自由度，后续级联进一步改善了空时自适应处理算法的动目标检测性能。
침대쌍기지궤재뢰체공시자괄응처리난이유효억제잡파검측목표적문제，제출료일충쌍기지궤재뢰체잡파예려파방법。해방법고필료실제중재궤속도적고계여진실속도적오차，이용뢰체계통삼수、재궤평태속도등신식설계잡파예려파기억제대부분잡파，잉여적소량잡파가유발전성숙적공시자괄응처리산법진행억제，진이제고공시자괄응처리산법적동목표검측능력。계산궤방진실험표명，해방법능유효지대궤충전형궤하배치하적쌍기지궤재뢰체잡파진행억제，강저료잡파자유도，후속급련진일보개선료공시자괄응처리산법적동목표검측성능。
In order to solving the problem of ineffective clutter suppression and target detection of space‐time adaptive processing ( STAP) in bistatic airborne radar , a clutter pre‐filtering method applied in the bistatic airborne radar that takes advantage of radar operating parameters , platform velocity and so on is proposed . The velocity error of the airborne platform is also considered . Most of the clutter can be filtered so that the residual clutter can be completely suppressed by the well‐developed STAP algorithm . Computer simulation results show that this method is effectively workable to several classical geometric configurations of bistatic airborne radar . The moving target detectability of the following STAP algorithm is also enhanced after this pre‐filter .