毫米波LFMCW雷达调频非线性剩余频差的估计

ESTIMATION OF NONLINEAR RESIDUAL FREQUENCY ERRORS IN FREQUENCY MODULATION FOR MM-WAVE LFMCW RADAR

针对LFMCW雷达中调频非线性剩余频率误差的估计问题 ,提出了一种基于过零检测和周期图的参数估计方法 ,详细分析了相位调制正弦信号的过零检测误差 .仿真试验表明 ,该方法能够精确地估计调频非线性剩余频差 ,具有较高的运算效率 。

An estimation method of the nonlinear residual frequency errors for frequency-modulation in LFMCW radar was proposed based on zero-crossing detection and periodogram, and analysis of the zero-crossing detection errors in phase-modulation sinusoid signal was given in details. Simulations demonstrate that this method provides an accurate estimation of nonlinear residual frequency errors with high computation efficiency. An experimental result was also given.