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从频谱均衡的角度解释了去卷积方法能获得距离超分辨性能的原理。结果表明超分辨的原理在于利用了 3dB带宽以外的频率分量。经过均衡以后 ,3dB带宽以外的所有频谱分量的幅度将会相同 ,即信号的带宽得到了外推 ,从而分辨率得到提高。分析了实际系统对该方法性能所产生的可能限制。去卷积方法能否在系统中应用需视系统的具体情况而定 ,如采样率、噪声模型及多普勒频移等。
From the perspective of spectrum equalization, we explain the principle that deconvolution method can obtain the distance super-resolution performance. The results show that the principle of super-resolution lies in the use of frequency components other than 3dB bandwidth. After equalization, the amplitude of all spectral components outside the 3 dB bandwidth will be the same, ie the bandwidth of the signal is extrapolated and the resolution is improved. The possible limitations of the actual system on the performance of the method are analyzed. Deconvolution method can be applied in the system depends on the specific circumstances of the system, such as sampling rate, noise model and Doppler shift.