NOISE-ANALYSIS OF DIGITIZED FMCW RADAR WAVE-FORMS

A staircase phase approximation for generating a linear frequency-modu lated continuous wave radar signal is considered and the use of filter ing on the samples of the signal has been assumed in both transmission and reception. It is shown that an excellent spectrum of the radar si gnal can be obtained, provided that the appropriate value of the sampl e duration is used. The effect of noise due to the discrete representa tion of the signal is analysed for both transmitted and received signa l. It is shown that the level of the noise may be kept below the noise level of a high-quality oscillator even in the absence of any filter smoothing.