Measuring method of phase noise amendment null absolute

摘要

This invention regards the method of the absolute range measurement due to interference method. Method, frequency to the object which one measures at least does with reception of the electromagnetic radiation which is modulated, and the radiation which has heterodyne mixture. Radiation is guided, through the interference length of standard, parallel. It disperses with the object and the interference figure which 1st of the radiation which returns digitalizes and the interference figure which 2nd of the radiation which is guided at standard length digitalizes, is received with the receiver. From the phase curved line data in the 2nd interference figure, it synthesizes the hypothetical interference figure or that phase curved line, range measurement the phase curved line data in the 1st interference figure by comparison with the phase curved line data in the hypothetical interference figure.