Design and Development of a Wide-Field Fully Cryogenic Phased Array Feed for Arecibo

Burnett, Maria; Kunzler, Jakob W.; Nygaard, Erich; Jeffs, Brian D.; Warnick, Karl F.; Campbell, D. B.; Cortes-Medellin, German; Parshley, Stephen C.; Vishwas, Amit; Perillat, Phil; Roshi, D. Anish

doi:10.23919/ursigass49373.2020.9232378

Cited by 10 publications

(6 citation statements)

References 4 publications

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“…Large single aperture antennas all over the world mainly include Sardinia 64 m Radio Telescope (SRT; Carretti et al 2017), Tianma 65 m Telescope (Dong & Liu 2021), Jiamusi 66 m Radio Telescope (Yu et al 2016), Wuqing 70 m Radio Telescope (WRT; Guo et al 2021), Deep Space Station 14 (DSS-14) 70 m Radio Telescope (Imbriale & Hoppe 2000), Lovell 76 m Telescope (Morison 2007), Effelsberg 100 m Radio Telescope (Holst et al 2014), Green Bank 100 m Telescope (GBT; Roshi et al 2018), Arecibo 305 m Radio Telescope (ruined, under reconstruction) (Burnett et al 2020), Fivehundred-meter Aperture Spherical radio Telescope (FAST; Tang 2015), and QiTai 110 m Radio Telescope (QTT, under construction) (Wang 2014), etc. To measure the reflector surface accuracy of these large radio telescopes, primary measurement methodologies including photogrammetry (Gale et al 2016), laser scanning (Holst et al 2017), and microwave holography (Serra et al 2012) are developed and successfully applied.…”

Section: Introductionmentioning

confidence: 99%

“…The PAF works at 1.4 GHz, and increases the speed of sky survey by 2.1 to 7 times (Roshi et al 2018). Besides, large reflector antennas including Australian Square Kilometer Array Pathfinders (ASKAP), Arecibo 305 m Radio Telescope, the Westerbork Synthesis Radio Telescope (WSRT), SRT, FAST, and QTT, are already or planned to be equipped with PAF (Han & Zhong 2016;Beresford et al 2017;Navarrini et al 2019;Burnett et al 2020;Pei et al 2022;Van Cappellen et al 2022).…”

Section: Introductionmentioning

confidence: 99%

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Reflector Deformation Measurement and Correction Methodology of Large Antenna Based on Phased Array Feed

Wang,

Kong,

Zhang

et al. 2024

Res. Astron. Astrophys.

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To solve the problem of time-consuming measurement and correction of large antennas' reflector deformation, a new microwave holography methodology based on Phased Array Feed (PAF) is proposed. Starting from the known expression of receiving signals in microwave holography, the theory of PAF holography is derived through Geometrical Optics (GO). Reflector deformation, as well as pointing deviation and subreflector offset, can be calculated out by applying the derived equations. A measurement and correction system based on PAF holography is depicted, and two kinds of measurement methods are illustrated. The proposed measurement methodology is verified by numerical simulation, and its measurement error is analyzed. The results indicate that our proposed methodology is feasible, especially for Cassegrain antennas.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reflector Deformation Measurement and Correction Methodology of Large Antenna Based on Phased Array Feed

Wang,

Kong,

Zhang

et al. 2024

Res. Astron. Astrophys.

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“…Previous work includes a scaleable, distributed signal processing architectures for phased array beamforming [6]. Heterogeneous systems are used by astronomical receivers such as the Large-aperture Experiment to Detect the Dark Age (LEDA) [7], Focal Lband Array for the Green Bank Telescope (FLAG) [8] and the Advanced L-band Phased Array Camera for Astronomy (ALPACA) [9].…”

Section: Introductionmentioning

confidence: 99%

Wideband Array Signal Processing with Real-Time Adaptive Interference Mitigation

Whipple¹,

Ruzindana²,

Burnett³

et al. 2023

Preprint

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“…Parkes UWL planned to use an oversampled polyphase filter bank (OS-PFB) in the future to solve the problem of inter-subband aliasing generated by CS-PFB channelization, and the related technology is being studied but not yet realized at this stage (Hobbs et al 2020). Burnett et al (2020) presented the design ideas and initial progress in the development of the Arecibo radio telescope digital backend system, which was planned to use 18 ZCU111 boards to digitize and channelize the signal. They relied on 2048-point oversampling PFBs to achieve subband division and eliminate spectral leakage, and no further progress was found in related work.…”

Section: Introductionmentioning

confidence: 99%

Research on Ultra-wide Bandwidth Low-frequency Signal Channelization for Xinjiang 110 m Radio Telescope

Zhang,

Zhang

et al. 2023

Res. Astron. Astrophys.

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Aiming at the subband division of UWL (Ultra-Wide wideband Low-frequency) signal (frequency coverage range :704-4032 MHz) of Xinjiang 110 m radio telescope (QTT), a scheme of ultra-wide bandwidth signal is designed. Firstly, we analyze the effect of different window functions such as Hanning window, Hamming window and Kaiser window on the performance of FIR (Finite Impulse Response) digital filters, and implement a CS-PFB (Critical Sampling Polyphase Filter Bank) based on the Hamming window FIR digital filter. Secondly, we generate 3328 MHz simulation data of ultra-wideband pulsar baseband in the frequency range of 704-4032 MHz using the UBPB (Ultra-wide Bandwitdh Pulsar Baseband data generation) algorithm based on the 400 MHz bandwidth pulsar baseband data obtained from Parkes CASPSR observations. Thirdly, we obtain 26 subbands of 128 MHz based on CS-PFB and the simulation data, and the pulse profile of each subband by coherent dispersion, integration, and folding. Finally, the phase of each subband pulse profile is aligned by non-coherent dedispersion, and to generate a broadband pulse profile, which is basically the same as the pulse profile obtained from the original data using DSPSR. The experimental results show that the scheme of QTT UWL reception system is feasible, and the proposed channel algorithm in this paper is effective.

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Design and Development of a Wide-Field Fully Cryogenic Phased Array Feed for Arecibo

Cited by 10 publications

References 4 publications

Reflector Deformation Measurement and Correction Methodology of Large Antenna Based on Phased Array Feed

Reflector Deformation Measurement and Correction Methodology of Large Antenna Based on Phased Array Feed

Wideband Array Signal Processing with Real-Time Adaptive Interference Mitigation

Research on Ultra-wide Bandwidth Low-frequency Signal Channelization for Xinjiang 110 m Radio Telescope

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