Cross-correlation properties of radio impulse formed by frequency modulation by the harmonic bearing pseudo random sequence of Lemer are analyzed in the work. The comparative analysis of properties of the offered signal is conducted with the known noise signals. It is shown that middle level and maximal value of lateral peaks of body of vagueness of radio impulse formed by means of PRS Lemer less than at a signal, formed on the basis of polynomial Chebysheva. Application of this signal in the radar systems will allow to provide higher secrecy of their functioning, because such signal does not have the structured attractor in a difference from M-sequences and chaotic signals. Radio impulse is formed on the basis of PRS Lemer allows to provide a high discriminability on distance and speed at the maximal value of lateral peaks no more 2 / N .
noise signals, correlation properties, secrecy