Based on non-Gaussian AR-model, parametric bi-spectrum method is used to extrapolate radar echo signal; then the ISAR imaging has been done.

• 利用双谱分析方法,用非高斯AR模型对雷达目标回波信号进行参数化双谱估计,并在此基础上对数据进行外推处理,然后对数据进行ISAR成像。