基于时间-调频斜率分布的多线性调频信号检测与参数估计

Superimposed LFM Signals Detection and Parameter Estimation Based on Time-Frequency Rate Distribution

该文提出并分析了多线性调频信号的时间-调频斜率分布,并提出了一种基于该分布的多线性调频信号检测和参数估计方法。性能分析和仿真表明该方法是一种渐进最优的估计方法,具有高的参数估计精度和检测性能,且能用于低信噪比的场合。

A new concept of time-frequency rate distribution is proposed. It can serve as an effective tool for superimposed LFM signal parameter estimation. A new method based on the time-frequency rate distribution is also proposed. Performance analysis shows the new method is an asymptotically optimal method. Simulation results show the new method possesses excellent properties, and is suitable for low SNR environment.