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雷达关联成像是一种全新的凝视高分辨成像方法,在军事上有着广阔的应用前景。文中针对阵列雷达普遍存在的阵元位置误差问题,建立了存在阵元位置误差下的雷达关联成像模型,得到了泰勒展开下目标回波与阵元位置误差的线性关系;推导了存在阵元位置误差条件下雷达关联成像的理论误差限,准确预测了阵元个数、信号带宽、成像单元尺寸和数目、目标散射系数和散射中心数目对成像误差的影响。研究结果为雷达关联成像系统参数的设置以及阵元位置误差补偿提供了一定的参考和依据。
Radar correlation imaging is a new method of high-resolution gaze imaging, which has broad application prospects in the military. Aiming at the ubiquitous array position error problem of array radar, a radar correlation imaging model with array element position error is established. The linear relationship between the target echo and array element position error under Taylor expansion is obtained. Under the condition of error, the theoretical error limit of radar correlation imaging accurately predicts the influence of the number of array element, signal bandwidth, imaging unit size and number, target scattering coefficient and number of scattering center on imaging error. The research results provide some reference and basis for the setting of radar associated imaging system parameters and the compensation of position error of array elements.