CAJ | 학술논문

针对时域Σ△-ADPCA杂波抑制能力不足的缺陷,研究了频域∑△-ADPCA算法,并给出了一种快速收敛的自适应增益系数计算方法.频域∑△-ADPCA的优点是通过多普勒波束锐化,在各子波束内分别计算最佳增益系数,从而精确地补偿载机运动和系统误差,提高杂波对消性能.仿真实验结果充分验证了频域Σ△-ADPCA的正确性和有效性.
침대시역Σ△-ADPCA잡파억제능력불족적결함,연구료빈역∑△-ADPCA산법,병급출료일충쾌속수렴적자괄응증익계수계산방법.빈역∑△-ADPCA적우점시통과다보륵파속예화,재각자파속내분별계산최가증익계수,종이정학지보상재궤운동화계통오차,제고잡파대소성능.방진실험결과충분험증료빈역Σ△-ADPCA적정학성화유효성.
In this paper,a novel frequency domain Σ△-ADPCA technique is proposed,and a fast convergent algorithm is developed to obtain the adaptive gain ratio.Compared with the time domain Σ△-ADPCA,the frequency domain Σ△-ADPCA can calculate adaptively the optimum gain ratio within each sub-beam Doppler beam-sharpening,which results in improved clutter suppression and robustness.Simulation results fully validate the proposed method.