Nearest-neighbor pattern recognition can recognize low modulating frequency of FSK in higher sam-pling frequency, avoiding the disadvantage of sub-Nyquist sampling.

• 最近邻模式识别法在采用较高采样频率而导致频谱分辨率不高的情况下仍可准确检测FSK信号,有效避免了以往欠采样带来的采样时间较长的弊端。