4 citations · 8 across the 7 of their papers we have counts for
7 papers
A fast, wide-field, and real-time imaging prototype for large aperture arrays
Nithyanandan Thyagarajan, Jishnu Thekkeppattu, David Humphrey
Real-time processing on sub-millisecond timescales is essential for detecting fast astrophysical transients such as fast radio bursts (FRBs) and prompt electromagnetic counterparts…
Intrinsic Cross Polarization Ratio maps from all-sky observations with the SKA-Low prototype station Aperture Array Verification System 2
Giulia Macario, Giuseppe Pupillo, Gianni Bernardi +10
The low-frequency radio telescope of the Square Kilometre Array (SKA-Low), currently under construction in the remote Murchison shire in the Western Australia's outback, will obser…
First results from a low cost software defined radio system monitoring VHF equatorial ionospheric scintillations in the Indian sector
Jishnu N. Thekkeppattu
Scintillations of radio frequency signals due to the ionosphere, despite having been studied for decades, is still an active area of research. Of particular interest is the scintil…
Calibration of an SKA-Low Prototype Station Using Holographic Techniques
Jishnu N. Thekkeppattu, Randall B. Wayth, Marcin Sokolowski
Performance of digitally beamformed phased arrays relies on accurate calibration of the array by obtaining gains of each antenna in the array. The stations of the Square Kilometer…
Singular spectrum analysis of time series data from low frequency radiometers, with an application to SITARA data
Jishnu N. Thekkeppattu, Cathryn M. Trott, Benjamin McKinley
Understanding the temporal characteristics of data from low frequency radio telescopes is of importance in devising suitable calibration strategies. Application of time series anal…
System design and calibration of SITARA -- a global 21 cm short spacing interferometer prototype
Jishnu N. Thekkeppattu, Benjamin McKinley, Cathryn M. Trott +2
Global 21-cm experiments require exquisitely precise calibration of the measurement systems in order to separate the weak 21-cm signal from Galactic and extragalactic foregrounds a…
Design Equations for a Closely-Spaced Two-Element Interferometer Including Internal Noise Coupling
Adrian T. Sutinjo, Benjamin McKinley, Leonid Belostotski +2
We present design equations for a two-element closely-spaced interferometer for measuring the noise temperature of a uniform sky. Such an interferometer is useful for observing hig…