Abstract:

Aiming at the application of multi-channel range and phase difference measurement on P+L frequency band, a measurement method about the sort of relative phase difference and the range difference is proposed, which transforms the frequency and high precision digital collection of twain channels. A mathematical analyzing method about the relative range-phase difference throughout digital relative calculation is proposed. Based on analyzing the influence about the frequency conversion and high speed digital collection of the relative phase and range error of measurement, this method is proved effective via the comparison of the metrical result between the relative rangephase difference and current instruments.