Digital Complex Correlator for a C-band Polarimetry survey
Abstract
The international Galactic Emission Mapping project aims to map and characterize the polarization field of the Milky Way. In Portugal it will cartograph the C-band sky polarized emission of the Northern Hemisphere and provide templates for map calibration and foreground control of microwave space probes like ESA Planck Surveyor mission. The receiver system is equipped with a novel receiver with a full digital back-end using an Altera Field Programmable Gate Array, having a very favorable cost/performance relation. This new digital backend comprises a base-band complex cross-correlator outputting the four Stokes parameters of the incoming polarized radiation. In this document we describe the design and implementation of the complex correlator using COTS components and a processing FPGA, detailing the method applied in the several algorithm stages and suitable for large sky area surveys.
Keywords
Cite
@article{arxiv.1010.3230,
title = {Digital Complex Correlator for a C-band Polarimetry survey},
author = {Miguel Bergano and Francisco Fernandes and Luis Cupido and Domingos Barbosa and Rui Fonseca and Ivan Ferreira and Bruce Grossan and George Smoot},
journal= {arXiv preprint arXiv:1010.3230},
year = {2015}
}
Comments
15 pages, 10 figures; submitted to Experimental Astronomy, Springer