Browsing by Author "Gonzales, L."
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Item Open Access JRO digital receiver modernization using ADCs with high-speed JESD204B data interface and FPGAs(Instituto Geofísico del Perú, 2021-06) Verastegui, J.; Rojas, J.; Tupac, I.; Caceres, D.; Gonzales, L.The latest data acquisition system running at the Jicamarca Radio Observatory for the main radar has been used for more than five years now. Although there are no major inconveniences on the performance there have been some problems with internal interferences which are usually unpredictable and related to the PCB design, the noise floor can be different between channels too. So there are some chances of improvement developing a new approach. We propose a new design based on a high speed JESD204B data interface; the digital signal processing and custom acquisition logic will be implemented inside an FPGA capable of managing the JESD204B high-speed interface. This will give us the flexibility of implementing digital blocks inside the FPGA to improve the performance of the receivers, we will gain scalability to perform on a much higher bandwidth and the PCB will be very much simplified which will reduce the manufacturing costs, design time, and development time.Item Open Access Upgrade of Automatic Beam Switching (ABS) at Jicamarca Radio Observatory(Instituto Geofísico del Perú, 2021-06) Gonzales, L.; Espinoza, J.; Verástegui, J.; Ortecho, D.; Milla, Marco; Belleza, A.; Vila, N.Particular beam orientations are required for each experiment to study different atmospheric phenomena at the Jicamarca Radio Observatory (JRO), For an antenna array, this change can be done manually or remotely. JRO has had a beam steering system since 2005 for the remote operation. The remote operation is achieved using IP protocols and addresses associated with each antenna module and a web interface is used for the operation and supervision from the main building. The principle of the RF stage of the system is the phase shift due to change in the coaxial cable length between the source and the antennas in each antenna module. This poster summarizes the requirements of the system upgrade as well as the characteristics of the new electronic, mechanical, RF and interface design for each element of the automatic beam system used at JRO.