基于kaiser窗的双谱线插值FFT谐波分析，用于建立主成分分析模型，阵列信号处理的高分辨率估计，包括调制，解调，信噪比计算，信号维数的估计，预报误差法参数辨识-松弛的思想，采用偏最小二乘法。- Dual-line interpolation FFT harmonic analysis kaiser windows, Principal component analysis model for establishing, High-resolution array signal processing estimates, Includes the modulation, demodulation, signal to noise ratio calculation, Signal dimension estimates, Prediction Error Method for Parameter Identification- the idea of relaxation, Partial least squares method.