CAJ | 학술논문

针对ARM采用空间谱估计算法对抗雷达有源诱饵系统时，由于同一脉冲内各辐射源数据间具有强相关特性而使得算法的估计性能有所下降的问题，建立了多脉冲采样时观测数据分组相关的数学模型。通过Taylor展开的方法对随机相位矩阵的逆的期望进行求解，从而得到多脉冲采样下MUSIC算法对抗诱饵的测向误差近似值。并通过仿真实验给出了在脉冲数、辐射源数、阵元数及入射角度间隔不同时，估计有效比与经典MUSIC算法理论值的差异程度。采样脉冲数较少会使得ARM采用超分辨算法时的实测估计误差与理论值有较大差异。
침대ARM채용공간보고계산법대항뢰체유원유이계통시，유우동일맥충내각복사원수거간구유강상관특성이사득산법적고계성능유소하강적문제，건립료다맥충채양시관측수거분조상관적수학모형。통과Taylor전개적방법대수궤상위구진적역적기망진행구해，종이득도다맥충채양하MUSIC산법대항유이적측향오차근사치。병통과방진실험급출료재맥충수、복사원수、진원수급입사각도간격불동시，고계유효비여경전MUSIC산법이론치적차이정도。채양맥충수교소회사득ARM채용초분변산법시적실측고계오차여이론치유교대차이。
With a focus on the degraded performance of spectral estimation algorithms due to the strong correlation among data of radiation sources in a single pulse, when antagonizing radar active decoy systems, the system model of correlated data sampled in multiple pulses was established in this paper. By antagonizing the decoy through use of the MUSIC algorithm, the approximate value of the direction finding error is obtained by solving the expectation of the inverse of the matrix of random phases using the Taylor expansion in the case of multiple pulse samplings. Simu-lations show the difference between the efficiency ratio and its theoretical value of classical MUSIC as the number of pulses, the number of sources, the number of antennas and the incidence angle interval changes. The primary rea-son for the huge difference between the actual estimation error of the super-resolution algorithm related to ARM and its theoretical value is that less pulses are used.