CAJ | 학술논문

为了在充分抑制杂波的同时保持最大输出信杂比，提出了一种基于最大信杂比准则的 MTD滤波器设计算法。该算法首先将杂波建模为大量窄带杂波的线性叠加，并将这些窄带杂波均匀放置在脉冲重复频率的范围内。然后通过实际频响与期望频响的比较，自适应地改变窄带杂波的功率强度，利用最大信杂比准则获得最佳滤波器系数。这种 MTD滤波器设计算法的收敛速度快，能够在零频附近形成宽而深的零陷，具有较高的实用性。仿真实例验证了所提算法的有效性。
위료재충분억제잡파적동시보지최대수출신잡비，제출료일충기우최대신잡비준칙적 MTD려파기설계산법。해산법수선장잡파건모위대량착대잡파적선성첩가，병장저사착대잡파균균방치재맥충중복빈솔적범위내。연후통과실제빈향여기망빈향적비교，자괄응지개변착대잡파적공솔강도，이용최대신잡비준칙획득최가려파기계수。저충 MTD려파기설계산법적수렴속도쾌，능구재령빈부근형성관이심적령함，구유교고적실용성。방진실례험증료소제산법적유효성。
To suppress clutters and maximize the output signal-to-clutter ratio(SCR),a moving target detection(MTD)filter algorithm based on the maximum SCR rule is proposed in this paper.This algorithm firstly models the received clutters as a linear superimposition of many narrowband clutters,and uniformly places these narrowband clutters in the range of pulse repetition frequency.By comparing the real with ideal frequency responses of the filter,the powers of these narrowband clutters are controlled adaptively.Based on the maximum SCR rule ,the optimal filter coefficients are computed.The proposed algorithm not only has wide and deep null at the zero region,but also has high convergence speed.Therefore,it is very practical. The simulation examples are presented to show the effectiveness of the proposed algorithm.