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One key communication block in 5G and 6G radios is the active phased array (APA). To ensure reliable operation, efficient and timely fault diagnosis of APAs on-site is crucial. To date, fault diagnosis has relied on measurement of frequency…

信号处理 · 电气工程与系统科学 2023-06-08 Martin H. Nielsen , Yufeng Zhang , Changbin Xue , Jian Ren , Yingzeng Yin , Ming Shen , Gert F. Pedersen

The next generation Very Large Array project (ngVLA) would represent a major step forward in sensitivity and resolution for radio astronomy, with ability to achieve 2 milli-arcsec resolution at 100 GHz (assuming a maximum baseline of 300…

天体物理仪器与方法 · 物理学 2017-06-12 David T. Frayer

We are using the Australia Telescope Compact Array to image about six square degrees surrounding the Chandra Deep Field South and European Large Area ISO Survey - South 1 regions, with the aim of producing the widest deep radio survey ever…

天体物理学 · 物理学 2007-05-23 Ray P. Norris , Enno Middelberg , Brian J. Boyle

We used a new spectral-fitting technique to identify a subpopulation of 6 narrow-band giant pulses from the Crab pulsar out of a total of 1578. These giant pulses were detected in 77 minutes of observations with the 46-m dish at the…

高能天体物理现象 · 物理学 2021-09-29 Parasar Thulasiram , Hsiu-Hsien Lin

We present the Deeper Wider Faster (DWF) program that coordinates more than 30 multi-wavelength and multi-messenger facilities worldwide and in space to detect and study fast transients (millisecond-to-hours duration). DWF has four main…

天体物理仪器与方法 · 物理学 2019-09-04 Igor Andreoni , Jeff Cooke

Fast Radio Bursts (FRBs) are short timescale (<<1 s) astrophysical radio signals, presumed to be a signature of cataclysmic events of extragalactic origin. The discovery of six high-redshift events at ~1400 MHz from the Parkes radio…

天体物理仪器与方法 · 物理学 2015-06-17 Cathryn M. Trott , Steven J. Tingay , Randall B. Wayth

Recently, there have been reports of six bright, dispersed bursts of coherent radio emission found in pulsar surveys with the Parkes Multi-beam Receiver. Not much is known about the progenitors of these bursts, but they are…

高能天体物理现象 · 物理学 2013-09-10 T. E. Hassall , E. F. Keane , R. P. Fender

Fast Radio Burst (FRB) is an extremely energetic cosmic phenomenon of short duration. Discovered only recently and with its origin still unknown, FRBs have already started to play a significant role in studying the distribution and…

天体物理仪器与方法 · 物理学 2025-07-31 Xuerong Guo , Han Wang , Yifan Xiao , Huaxi Chen , Yinan Ke , ChenChen Miao , Pei Wang , Di Li , Chenwu Jin , Ling He , Yi Feng , Yongkun Zhang , Jiaying Xu , Guangyong Chen

The Long Wavelength Array (LWA) will be a new multi-purpose radio telescope operating in the frequency range 10-88 MHz. Upon completion, LWA will consist of 53 phased array "stations" distributed over a region about 400 km in diameter in…

NenuFAR (New extension in Nan\c{c}ay upgrading LoFAR) is a new radio telescope developed and built on the site of the Nan\c{c}ay Radio Observatory. It is designed to observe the largely unexplored frequency window from 10 to 85\,MHz,…

The population of radio-loud stars has to date been studied primarily through either targeted observations of a small number of highly active stars or widefield, single-epoch surveys that cannot easily distinguish stellar emission from…

太阳与恒星天体物理 · 物理学 2023-12-19 Joshua Pritchard , Tara Murphy , George Heald , Michael S. Wheatland , David L. Kaplan , Emil Lenc , Andrew O'Brien , Ziteng Wang

The 43m telescope at the NRAO site in Green Bank, WV has recently been outfitted with a clone of the Green Bank Ultimate Pulsar Processing Instrument (GUPPI \cite{Ransom:2009}) backend, making it very useful for a number of pulsar related…

天体物理仪器与方法 · 物理学 2015-05-27 M. B. Mickaliger , M. A. McLaughlin , D. R. Lorimer , G. I. Langston , A. V. Bilous , V. I. Kondratiev , S. M. Ransom , F. Crawford

We have observed the Extended Chandra Deep Field South (E-CDF-S) using a mosaic of six deep Very Large Array (VLA) pointings at 1.4GHz. In this paper, we present the survey strategy, description of the observations, and the first data…

天体物理学 · 物理学 2009-11-13 Neal A. Miller , E. B. Fomalont , K. I. Kellermann , V. Mainieri , C. Norman , P. Padovani , P. Rosati , P. Tozzi

We report five new fast radio bursts (FRBs) discovered from the Galactic Plane Pulsar Snapshot (GPPS) survey by the Five-hundred-meter Aperture Spherical radio Telescope (FAST): FRB\,20210126, FRB\,20210208, FRB\,20210705, FRB\,20211005 and…

高能天体物理现象 · 物理学 2023-10-12 D. J. Zhou , J. L. Han , W. C. Jing , P. F. Wang , C. Wang , T. Wang , W. -Y. Wang , R. Luo , J. Xu , R. X. Xu , H. G. Wang

The Square Kilometre Array (SKA) is a radio telescope designed to operate between 70MHz and 10GHz. Due to this large bandwidth, the SKA will be built out of different collectors, namely antennas and dishes to cover the frequency range…

天体物理仪器与方法 · 物理学 2012-01-04 Adam Gauci , Kristian Zarb Adami , John Abela , Babak E. Cohanim

The Parkes multibeam pulsar survey is a sensitive survey of a strip along the Galactic plane with |b|<5 deg and l=260 deg to l=50 deg. It uses a 13-beam receiver on the 64-m Parkes radio telescope, receiving two polarisations per beam over…

Searches for millisecond-duration, dispersed single pulses have become a standard tool used during radio pulsar surveys in the last decade. They have enabled the discovery of two new classes of sources: rotating radio transients and fast…

天体物理仪器与方法 · 物理学 2018-08-17 D. Michilli , J. W. T. Hessels , R. J. Lyon , C. M. Tan , C. Bassa , S. Cooper , V. I. Kondratiev , S. Sanidas , B. W. Stappers , J. van Leeuwen

This contribution describes the experimental set-up implemented by the LUNASKA project at the Australia Telescope Compact Array (ATCA) to enable the radio-telescope to be used to search for pulses of coherent Cherenkov radiation from UHE…

高能天体物理现象 · 物理学 2009-07-27 C. W. James , R. D. Ekers , C. J. Philips , R. J. Protheroe , P. Roberts , R. A. Robinson , J. Alvarez-Muñiz , J. D. Bray