BookDOI
Antenna Arraying Techniques in the Deep Space Network: Rogstad/Antenna Arraying Techniques
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TLDR
Now implemented at the Goldstone Complex and other Deep Space Network overseas facilities, antenna arraying provides flexible use of multiple antennas to increase data rates and has enabled NASA's DSN to extend the missions of some spacecraft beyond their planned lifetimes.Abstract:
Antenna arraying is the combining of the output from several antennas in order to improve the signal-to-noise ratio (SNR) of the received signal. Now implemented at the Goldstone Complex and other Deep Space Network (DSN) overseas facilities, antenna arraying provides flexible use of multiple antennas to increase data rates and has enabled NASA's DSN to extend the missions of some spacecraft beyond their planned lifetimes.read more
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Journal ArticleDOI
The Murchison Widefield Array: Design Overview
Colin J. Lonsdale,Roger J. Cappallo,Miguel F. Morales,Miguel F. Morales,Frank H. Briggs,L. Benkevitch,Judd D. Bowman,John D. Bunton,S. Burns,Brian E. Corey,Ludi deSouza,S. Doeleman,Mark Derome,Avinash A. Deshpande,M.R. Gopala,Lincoln J. Greenhill,David Herne,Jacqueline N. Hewitt,P. A. Kamini,Justin C. Kasper,B. B. Kincaid,Jonathon Kocz,E. Kowald,Eric Kratzenberg,Deepak Kumar,Mervyn J. Lynch,S. Madhavi,Michael Matejek,Daniel A. Mitchell,Edward H. Morgan,Divya Oberoi,Stephen M. Ord,Joseph Pathikulangara,Thiagaraj Prabu,Alan E. E. Rogers,A. Roshi,Joseph E. Salah,Robert J. Sault,N. U. Shankar,K. S. Srivani,Jamie Stevens,Steven Tingay,A. Vaccarella,M. Waterson,Randall B. Wayth,Rachel L. Webster,Alan R. Whitney,Andrew Williams,Christopher L. Williams +48 more
TL;DR: The Murchison Widefield Array is a dipole-based aperture array synthesis telescope designed to operate in the 80-300 MHz frequency range, capable of a wide range of science investigations but initially focused on three key science projects: detection and characterization of three-dimensional brightness temperature fluctuations in the 21 cm line of neutral hydrogen during the epoch of reionization.
Journal ArticleDOI
A hybrid adaptive antenna array
TL;DR: A novel hybrid adaptive antenna array which consists of analogue subarrays followed by a digital beamformer is presented in this paper to overcome the digital implementation difficulty.
Journal ArticleDOI
Body-Worn E-Textile Antennas: The Good, the Low-Mass, and the Conformal
TL;DR: In this article, a conventional microstrip array constructed with e-textiles is shown to have robust performance with moderate amounts of bending, similar to that which might be seen with body-worn arrays.
Journal ArticleDOI
Frequency-Domain AoA Estimation and Beamforming with Wideband Hybrid Arrays
Xiaojing Huang,Y. J. Guo +1 more
TL;DR: Simulation results show that the proposed AoA estimation algorithm is robust against practical impairments, and the frequency dependency of the array pattern is significantly reduced after digital beamforming.
Journal ArticleDOI
Ultra-Stable RF-Over-Fiber Transport in NASA Antennas, Phased Arrays and Radars
TL;DR: In this article, the authors provide an exposition of a number of NASA antennas, arrays and radar systems in which RF-over-fiber transport has played an enabling role, including the NASA Deep Space Network (DSN).
References
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Eigen Theory for Optimal Signal Combining: A Unified Approach
TL;DR: In this article, a general theoretical framework for optimal signal combining using the eigen theory approach is established, which can be applied to both current and future arraying implementation, as well as to current and current arraying implementations.
Symbol Stream Combining Versus Baseband Combining for Telemetry Arraying
TL;DR: It is shown that SSC outperforms BBC by about 0.35 dB (in terms of the required bit energy-to-noise spectral density for a bit error rate of 1,000) for an array of three DSN antennas, namely 64 m, 34m (T/R) and 34m(R).