| Abstract : | The technique used to find the direction of EM waves is referred to as Direction of Arrival (DoA). The current work is validating a fairly low computational complexity DoA estimation algorithm. This is being developed for a very low-frequency antenna for an ongoing space mission, Space Electric and Magnetic Sensor(SEAMS). The objective of the SEAMS mission is to study low-frequency emission from the Sun, Earth’s magnetosphere & geo-tail, galactic & extragalactic spectra, 21 cm cosmology, and space plasma. To perform the aforementioned studies the direction of the sources should be known. In this work, we tested two antenna configurations, (1) three orthogonally co-located dipoles antennas - Tri-dipole antenna, and (2) three orthogonally co-located monopoles - Tripole antenna. The Tripole and Tri-dipoles were first simulated on CST simulation software with plane wave excitation for generating near realistic data for the DoA estimation. The algorithm also utilizes the Matrix Pencil (MP) method and the Least Square method(LSM) to estimate the frequency received at the Tripole or Tri-dipole antenna. |
