An external calibrator for hydrogen observatories

Daniel Jacobs, Jacob Burba, Lauren Turner, Benjamin Stinnett

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

The External Calibrator for Hydrogen Observatories (ECHO) is an ongoing project to develop precision calibration sources for wide-field, low frequency, radio arrays such as the Murchison Widefield Array and the Hydrogen Epoch of Reionization Array which target 21cm radiation from primordial times. The accuracy of existing antenna beam models have been found to be a key factor limiting the realized sensitivity of the analysis pipelines. The precision required motivates us to go beyond applying a single model to each antenna in the array characterization and instead measure the response of the as-built system. We have developed a system for mapping the response pattern with a drone-mounted transmitter. Here we report a first series of tests, including our first test maps of known calibration standards and a second test mapping an MWA tile.

Original languageEnglish (US)
Title of host publication2016 IEEE Conference on Antenna Measurements and Applications, CAMA 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781467389327
DOIs
StatePublished - Jan 12 2017
Event2016 IEEE Conference on Antenna Measurements and Applications, CAMA 2016 - Syracuse, United States
Duration: Oct 23 2016Oct 27 2016

Other

Other2016 IEEE Conference on Antenna Measurements and Applications, CAMA 2016
CountryUnited States
CitySyracuse
Period10/23/1610/27/16

ASJC Scopus subject areas

  • Instrumentation
  • Radiation

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    Jacobs, D., Burba, J., Turner, L., & Stinnett, B. (2017). An external calibrator for hydrogen observatories. In 2016 IEEE Conference on Antenna Measurements and Applications, CAMA 2016 [7815791] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CAMA.2016.7815791