基于单比特接收机的高检测率测频方法设计与实现

Design and Implementation of High Detection Rate Frequency Measurement Method Based on Mono-Bit Receiver

研究单比特接收机的高检测率测频方法,利用滤波器组将信号分成多通道,每条通道独立采样、测频,通过减小非线性变化产生谐波的影响达到提高检测率的目的,并对测频后的误检数据进行统计和分析,依据分析结果设计补偿矩阵,利用补偿矩阵对测频结果进行修正.仿真结果表明该方法有效提高了单比特接收机的双信号检测率,对于大动态范围的检测率提升更明显,归一化增益差为6 dB时检测率是原检测率的3.5倍.相关的研究方法和结论对实际工程应用具有一定的参考意义.

A method to improve the detection rate of dual signals in a mono-bit receiver was studied.First,the filter bank was used to divide the signal into multiple channels,and each channel was sampled and measured independently,and the detection rate was improved by reducing the influence of harmonics generated by nonlinear changes.Secondly,according to the statistics and analysis carried out on the false detection data after frequency measurement,a compensation matrix based on the analysis results was designed and used to correct the false detection results.The simulation results show that this method effectively improves the dual-signal detection rate of the mono-bit receiver,and the detection rate of large dynamic range is improved more obviously.When the normalized gain difference is 6 dB,the detection rate is 3.5 times of the original detection rate.Related research methods and conclusions have certain reference significance for practical engineering applications.