The simulation experiments of non-coherent detection of Doppler frequency shift and aerosol are carried out with the Mach-Zehnder interferometer as the spectral analyzer. Under the condition that the pulse energy of the transmitter reaches 500 mJ, the pulse repetition rate is 10 Hz, the spectral line width does not exceed 0.005 cm ^-1, the beam divergence angle is less than 0.10 mrad, the lens diameter of receiving telescope is 350 mm, the avalanche diode is used as the detector, the digital sampling rate is 2×10 ⁷ sampling·s ^-1, and the number of sampling data bits is 16 bit (the effective number is 11 bit), the wind profile with the detection distance of 2500 m in 45° oblique range is obtained and the detection accuracy of line-of-sight wind speed is 2 m·s ^-1. The simulation results show that the radar with the Mach-Zehnder interferometer as the spectral analyzer can be used for the direct detection of Martian wind-sand. Compared with the 354.7 nm laser pulse, the 1064 nm laser pulse (compatible with the laser-induced breakdown spectrometer) has a high interference contrast, and the Mie backscatter strength is higher than the Rayleigh backscatter strength.