From the range measurement value by the radar system ambiguity the method of removing

摘要

(57) Abstract As for this invention, from measurable quantity of the distance by the radar system ambiguity it regards the method in order to remove. As for the radar system, 1st frequency (F₁) and the signal which is changed with 2nd frequency (F₂) is transmitted, being reflected the signal which returns, is received with two reception channels where each corresponds to one frequency (F₁, F₂) with the target, measurable quantity is formed on the basis of the phase difference between the signals which exist in each channel, each channel (41,42) receives the signal which possesses the frequency between 1st and 2nd frequency in target nearby Doppler frequency. As for this invention, especially, it can change the frequency of the signal which is transmitted, at least alternately between two frequencies, it is applied to the continuous wave radar system.