Speaker
Description
The Deep Synoptic Array (DSA-2000) is a planned innovative radio telescope made of 2000 5m-dish antennas located in the Nevada (USA) desert spread over a 15 x 19 km area (projected construction in 2026). The telescope will span 700 MHz to 2 GHz with an instantaneous field-of view of 10.6 deg2. Its design is centered around the concept of Radio Camera, involving a streamlined data processing pipeline – which includes data correlation, calibration, Radio Frequency Interference (RFI) flagging, and gridding - to achieve a real-time production of fully sampled radio images every 15 minutes at a sensitivity of 1 μJy per hour of integration, and at a spatial resolution of 3.5 arcsec. As any radio telescope, the DSA-2000 will also be sensitive to active spectrum users and will embed a multi-layer protection against RFI including real-time flaggers at the individual antenna and cross-correlation levels.
After introducing the DSA-2000, we will present the methodology and results of the initial spectrum surveys conducted at the future telescope site. We will then detail the RFI simulation framework developed to evaluate the impact of known RFI on the telescope data. Finally, we will describe venues of coexistence with local radio services and the real-time algorithmic RFI mitigation strategy to be deployed on the telescope.
