page_title: Transient Array Radio Telescope
section_title: Basestation
hierarchical_section_title: Transient Array Radio Telescope / Design / Basestation
caption_attribution_description: English: The basestation electronics of a TART-2 radio telescope, with the raspberry-pi mounted below (and the FPGA hidden underneath the main part of the board)
context_page_description: The Transient Array Radio Telescope is a low-cost open-source array radio telescope consisting of 24 all-sky GNSS receivers operating at the L1-band. TART was designed as an all-sky survey instrument for detecting radio bursts, as well as providing a test-bed for the development of new synthesis imaging and calibration algorithms. All of the telescope hardware including radio receivers, correlators and operating software are open source. A TART-2 radio-telescope can be built for approximately 1000 Euros, and the telescope antenna array requires 4m x 4m area for deployment.
context_section_description: The basestation is a single PCB with an attached Raspberry Pi computer, and Papilio Pro FPGA daughter board. The basestation provides the 16.3767 MHz Crystal Oscillator which is distributed to the four radio hubs to provide synchronous clocking to the RF front ends. The data is returned from the radios via each radio hub to the basestation, consisting of 24 parallel streams of 1-bit samples. An FPGA processes these samples, acting as a radio correlator. The 276 correlations are sent to the Raspberry Pi host via SPI, and made available over a RESTful API.
caption: TART-2 basestation PCB showing the 8 Cat-6 ethernet cables for communication with the radio hubs, and the Raspberry Pi host computer below.
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