Analysis of Distance Information Error Between Phase Centers in Phase Comparison Direction Finding Methods

Gurel A. E., Orduyilmaz A., SOYSAL G.

28th Signal Processing and Communications Applications Conference (SIU), ELECTR NETWORK, 5 - 07 Ekim 2020 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.1109/siu49456.2020.9302039
  • Basıldığı Ülke: ELECTR NETWORK
  • Anahtar Kelimeler: passive direction finding, monopulse direction finding, phase comparison, interferometry, SODA, distance between pahse centers
  • Ankara Üniversitesi Adresli: Evet

Özet

In this paper, the effect of the distance information error between phase centers on the accuracy of monopulse phase comparison direction finding methods used in electronic support systems is analyzed. If the path difference causing the phase difference is greater than half the wavelength of the signal, ambiguity occurs in the phase comparison method. The ambiguity in the phase comparison method can be solved by SODA method using artificial aperture or hybrid method using the amplitude comparison. In this study, the robustness of phase comparison methods accuracy to distance information error between phase centers was analyzed with errors having different standard deviation values at 180 degrees viewpoint.