Dynamic Range Considerations for Modern Digital Array Radars

Peccarelli, Nicholas; James, Blake; Fulton, Caleb; Goodman, Nathan A.

doi:10.1109/radar42522.2020.9114607

Cited by 2 publications

(2 citation statements)

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“…At least two potential solutions for in-band interference of fully digital PARs exist, and precursor systems to Horus have been used to explore these [66], [67]. First, as will be described in the next section, the Horus radar is based on the Analog Devices AD9371 digital transceiver integrated circuit (IC).…”

Section: In-band Interferencementioning

confidence: 99%

“…An important note, however, is that the development of this and similar digital array systems allows for the exploration of the practical limitations in digital array calibration that the team has previously studied. This includes quantifying and extending other performance metrics such as dynamic range [67], [81] and spectrum-related interoperability using digital nonlinear equalization (NLEQ) and digital predistortion (DPD) [82], [83] or even intentional decorrelation of spurious products [66] to maximize dynamic range. For example, such relatively low-power spurious products include third order harmonics and intermodulation terms.…”

Section: Calibrationmentioning

confidence: 99%

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Horus—A Fully Digital Polarimetric Phased Array Radar for Next-Generation Weather Observations

et al. 2023

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Weather radars have become indispensable to meteorologists and the general public for both understanding and awareness of high-impact weather events and as part of the operational warning infrastructure. In the U.S., the operational weather radar network is composed of approximately 160 WSR-88D radars, which are S-band, dish-based, polarimetric Doppler radars. This work reports on the development of a fully digital phased array weather radar that is being used to assess the potential of such technology as a replacement for the WSR-88D radars. The "Horus" radar is a truck-based, S-band, fully digital polarimetric phased array radar. Fully digital systems hold promise for meeting some of the greatest technical challenges facing the meteorological community, such as the effective integration of dual-polarization capability with phased array beam agility. This paper describes the fully digital Horus phased array weather radar that was recently completed by the Advanced Radar Research Center (ARRC) at the University of Oklahoma (OU). An overview of the advantages and challenges facing fully digital arrays for weather observations is provided along with potential mitigation strategies. Initial weather observations with Horus are given with the goal of assessing the radar scanning capabilities and most importantly the polarimetric quality. Finally, a vision for the future of next-generation weather radar operations is given with an eye toward leveraging the scalable design of Horus for highresolution weather observations.

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Section: In-band Interferencementioning

confidence: 99%