CAJ | 학술논문

在非均匀杂波环境中，针对待检测距离单元的离散干扰严重影响统计空时自适应处理( STAP)杂波抑制性能的问题，提出了基于自适应局域变换的离散干扰抑制算法。该方法利用自适应局域变换矩阵具有局域变换和自适应滤波的双重特性，在较低计算复杂度条件下有效消除离散干扰对统计STAP方法的影响。仿真数据和MCARM实测数据分析表明，该方法能有效抑制待检测距离单元中的离散干扰和均匀杂波，显著改善STAP在非均匀杂波中的性能。
재비균균잡파배경중，침대대검측거리단원적리산간우엄중영향통계공시자괄응처리( STAP)잡파억제성능적문제，제출료기우자괄응국역변환적리산간우억제산법。해방법이용자괄응국역변환구진구유국역변환화자괄응려파적쌍중특성，재교저계산복잡도조건하유효소제리산간우대통계STAP방법적영향。방진수거화MCARM실측수거분석표명，해방법능유효억제대검측거리단원중적리산간우화균균잡파，현저개선STAP재비균균잡파중적성능。
The discrete interference could not be suppressed by the statistical STAP algorithms in the nonhomogeneous clutter, which leads the moving target detection performance to be degraded significantly. The discrete Interference suppression method based on adaptive localized domain transformation is proposed. In the proposed method, the adaptive localized transformation matrix is formed by a series of direct data domain ( DDD) adaptive weight vector in the different angles-Doppler direction, which can suppress the discrete interference and the residual clutter in the range cell under test significantly. According to the results by using the simulated data and real MCARM data, it is found that the proposed method can improve the STAP performance in non-homogeneous clutter significantly.