CAJ | 학술논문

针对机载雷达高速运动目标检测中存在严重的距离单元走动问题，将Keystone变换与STAP技术结合，提出了一种目标检测方法。该方法首先将雷达接收到的回波数据变换到频域，然后利用Keystone变换对目标的距离走动进行校正，再将校正后的数据变换回时域并做空时自适应处理(STAP)。仿真结果表明，该方法可有效克服高速运动目标距离走动导致STAP处理性能下降的问题，改善了目标检测性能。
침대궤재뢰체고속운동목표검측중존재엄중적거리단원주동문제，장Keystone변환여STAP기술결합，제출료일충목표검측방법。해방법수선장뢰체접수도적회파수거변환도빈역，연후이용Keystone변환대목표적거리주동진행교정，재장교정후적수거변환회시역병주공시자괄응처리(STAP)。방진결과표명，해방법가유효극복고속운동목표거리주동도치STAP처이성능하강적문제，개선료목표검측성능。
For the serious migration of range cell in detection of high speed moving target by airborne radar, This paper proposes a method for the target detection by combining Keystone transform with the space time adaptive processing (STAP). In this scheme, the received echo data is converted into the frequency domain firstly, and then, the migration of target range can be corrected by using Keystone transform, and eventually the corrected data are turned back into the time domain and the corresponding STAP is performed. Simulation results show that the proposed method can get over effectively the decreasing of STAP performance resulted from the migration of range for high speed moving target, thus improving the detection performance of target.