In the scene of wideband radar, due to the spread of target scattering points, the attitude and angle of view of the target constantly change in the process of moving. It is difficult to predict, and the actual echo of multiple scattered points is not fully matched with the transmitted signal. Therefore, it is challenging for the traditional matching filter method to achieve a complete matching effect in wideband echo detection. In addition, the energy dispersion of complex target echoes is still a problem in radar target detection under broadband conditions. Therefore, this paper proposes a wideband target detection method based on dual-channel correlation processing of rangeextended targets. This method fully uses the spatial distribution characteristics of target scattering points of echo signal and the matching characteristics of the dual-channel point extension function itself. The radial accumulation of wideband target echo signal in the complex domain is realized through the adaptive correlation processing of a dual-channel echo signal. The accu-mulation effect of high matching degree is achieved to improve the detection probability and the performance of wideband detection. Finally, electromagnetic simulation experiments and measured data verify that the proposed method has the advan-tages of high signal to noise ratio (SNR) gain and high detection probability under low SNR conditions.

中文翻译：

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宽带雷达复杂弱目标检测的鲁棒双通道相关算法

在宽带雷达场景中，由于目标散射点的扩散，目标在运动过程中姿态和视角不断变化。预测困难，多个散点的实际回波与发射信号不完全匹配。因此，传统的匹配滤波方法在宽带回波检测中要达到完全的匹配效果具有挑战性。此外，复杂目标回波的能量色散仍然是宽带条件下雷达目标检测的一个问题。因此，本文提出一种基于增程目标双通道相关处理的宽带目标检测方法。该方法充分利用了回波信号目标散射点的空间分布特性和双通道点扩展函数本身的匹配特性。通过双通道回波信号的自适应相关处理，实现复域宽带目标回波信号的径向累加。达到高匹配度的累加效果，提高检测概率和宽带检测性能。最后，电磁仿真实验和实测数据验证了该方法具有高信噪比增益和低信噪比条件下高检测概率的优点。