Narrow-band signal time difference estimation system based on long-term and short-term memory network

The invention discloses a narrow-band signal time difference estimation system based on a long-term and short-term memory network, which comprises a winding estimation unit, an estimation compensationunit and a comprehensive estimation unit, and is characterized in that a phase winding value in a cross-correlation phase spectrum is estimated in the winding estimation unit; the comprehensive estimation unit recovers phase winding by combining the cross-correlation spectrum, the phase winding parameters and the blind area probability, the time difference is estimated according to the non-winding phase spectrum, the estimation effect is good under low signal noise, the estimation result is accurate, and meanwhile the system is more stable. 本发明公开了一种基于长短期记忆网络的窄带信号时差估计系统，包括卷绕估计单元、估计补偿单元、综合估计单元，在卷绕估计单元中估计互相关相位谱中的相位卷绕值；在估计补偿单元得到时差落在卷绕模块盲区的盲区概率，所述综合估计单元结合互相关谱、相位卷绕参数和盲区概率恢复相位卷绕，根据无卷绕相位谱估计时差，本发明在低信噪下估计效果好、估计结果较为准确，同时系统更加稳定。