Baharuddin, M., Akbar, P. R., Sumantoyo, J. T. and Kuze, H. (2011) “Development of Circularly Polarized Synthetic Aperture Radar Sensor mounted on Unmanned Aerial Vehicle”, Jurnal Otomasi Kontrol dan Instrumentasi, 1(2), p. 59. doi: 10.5614/joki.2009.1.2.1.