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2009 IEEE International Conference on Robotics and Automation, 2009 We report our system and algorithm developments that enable a single mobile robot equipped with a directional antenna to simultaneously localize multiple unknown transient radio sources. Due to signal source anonymity, short transmission durations, and dynamic transmission patterns, the robot cannot treat the radio sources as continuous radio beacons ...
Dezhen Song +2 more
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Decentralized searching of multiple unknown and transient radio sources
2013 IEEE International Conference on Robotics and Automation, 2013We develop a decentralized algorithm to coordinate a group of mobile robots to search for unknown and transient radio sources. In addition to limited mobility and ranges of communication and sensing, the robot team has to deal with challenges from signal source anonymity, short transmission duration, and variable transmission power.
Chang-Young Kim +2 more
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A group sparsity imaging algorithm for transient radio sources
Astronomy and Computing, 2013Abstract Radio interferometers can achieve high spatial resolution for temporally constant sources by combining data observed over long periods of time. Recent imaging algorithms reconstruct smoothly varying sources by representing temporal variation in polynomial or Fourier bases.
Stephan Wenger +2 more
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A long-period radio transient active for three decades [PDF]
Nature, 2023 Recently several long-period radio transients have been discovered, with strongly polarised coherent radio pulses appearing on timescales between tens to thousands of seconds [1,2].
N Hurley-Walker, N Rea, S J Mcsweeney
exaly +2 more sources
Transient radio source near the galactic centre
Nature, 1976A VARIETY of interesting objects have been discovered in recent years within several arc min of the galactic centre. These include the main (east and west)1 components of the radio source Sgr A, a compact radio source2 at the centre of Sgr A West which may be the galactic nucleus, and a group of infrared sources3 in a region of ∼ 20″ diameter ...
R. D. DAVIES +4 more
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A Transient Radio Source near the Center of the Milky Way Galaxy
Science, 1992In late December 1990, a new radio source appeared near the center of our galaxy rivaling the intensity of Sgr A * (the compact radio source at the galactic center). Following its first detection, the flux density of the galactic center transient (GCT) increased rapidly to a maximum 1 month later, and then declined ...
J H, Zhao +10 more
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Transient nature of radio source NVSS J1957+35
Advances in Space Research, 2019Abstract We have searched for transient and variable radio sources in the field of Galactic micro-quasar Cygnus X-1 near 1.4 GHz (L band) using data from the Karl G. Jansky Very Large Array. We used twenty years of data between 1983 and 2003. We found a source NVSS J1957+35 showing transient behavior. The source was also mentioned earlier in NVSS and
Sabyasachi Pal +3 more
openaire +1 more source