Time-Modulated Array Based Linear Frequency Modulation Radar

A radar system combining time-modulated array (TMA) and linear frequency modulation (LFM) signals is pro-posed to extract the target information. The signal formulations and processing algorithms for range, Doppler, and angle are detailed. Range and Doppler information can be extracted by applying the successive fast Fourier transforms (FFTs) to the time domain data. The information of target angle can be extracted by using the ratio of the spectrum components obtained with the scheme of time-modulated array. Numerical simulations were conducted to validate the proposed TMA-LFM radar configuration and the efficiency of the signal processing algorithm.