Estimation of polarization effects on sky visibilities for FARSIDE

The Farside Array for Radio Science Investigations of the Dark ages and Exoplanets (FARSIDE) is a NASA funded probe-class mission concept to place a radio array (100 kHz - 40 MHz) on the far side of the Moon. The nominal array design consists of 128 non co-spatial orthogonal pairs of antenna and receiver nodes distributed over a 10 km×10 km area in a four arm spiral configuration. In this work we quantify the polarization leakages, due to dipole offsets, in terms of the stokes I, Q, U, and V beams as a function of sky position. We find that the offset leads to additional mixing and leakages of all Stokes components of the sky into the U and V polarizations of the instrument. We develop a custom interferometer pipeline for FARSIDE incorporating the co-spatial and non co-spatial Stokes beams and the uv-coverage of the array. We calculate the sky visibilities and produce the dirty images of point sources of the GLEAM catalog. Using the results, we estimate the effects of spatially non co-located antennas on the imaging performance of the array.