4 papers · 1 filter
Mapping Cosmological Signal Scales to Beam Calibration Requirements in 21cm Experiments and Implications for Near-Field Measurement
Daniel C. Jacobs
Instruments targeting 21~cm emission at high redshifts need a spectral dynamic range of better than ten thousand to distinguish the 21~cm background against bright foregrounds. Sys…
Polarisation Performance of Offset Phase Antennas: A Study for FARSIDE
Nivedita Mahesh, Judd D Bowman, Bharat Gehlot +1
Several radio telescopes have been planned or proposed to be deployed on the Lunar farside in the coming years. These will observe the unexplored ultra-long wavelengths of the elec…
An Update on the External Calibrator for Hydrogen Observatories (ECHO)
Yifan Zhao, Daniel C. Jacobs, Titu Samson +5
Precision measurements of the beam pattern response are needed to predict the response of a radio telescope. Mapping the beam of a low frequency radio array presents a unique chall…
Drone-Based Antenna Beam Calibration in the High Arctic
Lawrence Herman, Christopher Barbarie, Will Tyndall +17
Precision calibration is a critical requirement for future ultra-low-frequency observations of the early universe. The Array of Long Baseline Antennas for Taking Radio Observations…