5 papers
Harmonic and intermodulation emission from direct-to-device satellites - Harmonics of the Starlink 2.6 GHz downlink and the products around them
Balthasar Indermuehle, Benjamin Winkel, Federico Di Vruno +2
Direct-to-device (DTD) satellites carry mobile base stations transmitting in terrestrial mobile bands. Their non-linear emission products can fall into radio astronomy bands, inclu…
SNIFFLES I: Intended Emission, Unwanted Emission, and Unintended Radiation from Low-Earth Orbiting Satellites Impacting Radio Astronomy from 1-26 GHz
Balthasar Indermuehle, Liroy Lourenco
We present the first results of SNIFFLES, an ongoing observational programme to characterise intended emission, unwanted emission, and unintended radiation from NGSO systems across…
Towards Genuine Coexistence: Per-Satellite Emission and Radiation Limits to Protect Radio Astronomy and Geodetic VLBI at 1-14 GHz from Satellite Constellations
Balthasar Indermuehle, Lucia McCallum, Emma van der Wateren +7
Geodetic very long baseline interferometry (VLBI) is a vulnerable application of the radio astronomy service (RAS): it provides the fundamental link between the celestial and terre…
Mitigation of self-generated RFI using ASKAP's phased array feeds
Liroy Lourenco, Aaron P Chippendale
This paper presents the effects of radio frequency interference (RFI) mitigation on a radio telescope's sensitivity and beam pattern. It specifically explores the impact of subspac…
Survey and Monitoring of ASKAP's RFI Environment and Trends I: Flagging Statistics
L. Lourenço, A. P. Chippendale, B. Indermuehle +7
We present an initial analysis of Radio Frequency Interference (RFI) flagging statistics from archived Australian SKA Pathfinder (ASKAP) observations for the 'Survey and Monitoring…