Several techniques for improving the performance of FFT-based method are also discussed, including the Welch spectral estimation method and adaptive threshold adjusting technique.

• 本文对采用基于FFT捕获结构实现高动态扩频信号快捕过程中的几个关键问题进行了讨论,采用Welch谱估计方法和自适应门限技术等方法来提高捕获性能。