通道失配对阵列雷达处理性能影响建模仿真

Modeling and Simulation of Array Radar Processing Performance Effect Caused by Channel Mismatch

为了能够量化地评估阵列雷达通道失配对信号处理性能的影响,指导雷达系统设计、通道失配指标分配和雷达处理性能估计,建立了通道失配影响分析模型。首先假设了一种通道的幅度和相位均匀去相关通道失配模型;然后基于均匀去相关误差模型建立STAP影响模型,并推导出ADBF和SLC影响模型;最后,构建目标、干扰和杂波场景,利用建立的模型对通道失配给阵列雷达SLC、ADBF和STAP带来的性能影响进行实例仿真。结果表明,所提出的建模方法能够评估通道失配对阵列雷达处理性能的影响,为阵列雷达系统设计、指标分配和系统性能分析提供量化的依据。

To quantitatively evaluate the impact of channel mismatch on Array Radar processing performance, so as to guide the Radar system design, channel mismatch parameter allocation, and performance evaluation, the mismatch effect was analyzed and modeled in the paper. First, an amplitude and phase uniform irrelevant error model was given. Second, based on the uniform irrelevant error model, the STAP effect model was constructed and the AD- BF and SLC model was derived. Third, the scenarios of target, jamming and clutter were introduced to provide an ex- ample for simulating the performance effect on Array Radar SLC, ADBF and STAP processing caused by channel mismatch. Simulation results indicate that the constructed model can evaluate the performance effect caused by Array Ra- dar channel mismatch, hence it can provide quantitative basis for Array Radar system design, parameter allocation and system performance analysis.