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本文讨论利用FFT技术在脉冲多卜勒雷达单目标跟踪(PDSTT)状态下实现速度跟踪的同时提取角误差信息。文中首先给出了用FFT解决这个问题的两种数学上等价的方法。进而提出通过建立同数据相拟合的AR(自回归)模型,将数据延拓,以克服由于FFT分批处理频率同锥扫频率之间的相互作用而带来的困难。最后给出利用上述方法在FELIX C—256计算机上进行模拟实验的结果。
This paper discusses the use of FFT technology to achieve velocity tracking in the pulse Doppler radar single-target tracking (PDSTT) state while extracting angular error information. The paper first gives two mathematically equivalent methods to solve this problem with FFT. Furthermore, it is proposed to extend the data by establishing an AR (autoregressive) model that fits the data to overcome the difficulties caused by the interaction between FFT batch processing frequency and cone scanning frequency. Finally, the simulation results on the FELIX C-256 computer using the above method are given.