Instantaneous polarization measurement method based on frequency-shift-pulse-vector waveform

Instantaneous polarization measurement radars adopt "simultaneous transmitting, simultaneous receiving" operation scheme, so they can obtain target polarization scattering matrix (PSM) based on only one pair of target echoes. Frequency-shift-pulse-vector waveform is one of narrow band instantaneous polarization measurement waveforms. Based on its transmitted and received signal models, one estimation algorithm in spectral domain of PSM is developed in this paper. Outdoor experiments have been taken with polarization radar system developed by National University of Defense Technology (NUDT), China, and following conclusions can be drawn from experimental results: Compared with the results obtained by time division operation scheme, the difference of amplitude relative measurement results is smaller than 2 dB, while that of phase relative measurement results is smaller than 10 degree, which prove the validity of this estimation algorithm here.