FPGA-based digital signal processing for the next generation radio astronomy instruments: ultra-pure sideband separation and polarization detection

2016 ◽  
Author(s):  
Andrés Alvear ◽  
Ricardo Finger ◽  
Roberto Fuentes ◽  
Raúl Sapunar ◽  
Tom Geelen ◽  
...  
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Radio Astronomy ◽  
Digital Signal ◽  
Next Generation ◽  
Polarization Detection

Improving the Performance and Resource Utilization of the CASPER FFT and Polyphase Filterbank

2016 ◽  
Vol 05 (04) ◽  
pp. 1641002
Author(s):  
Ryan Monroe
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Resource Utilization ◽  
Radio Astronomy ◽  
Digital Signal ◽  
Quantization Noise

The effectiveness of Digital Signal Processing (DSP) solutions for radio-astronomy is limited by the efficiency of the implemented algorithms. Novel implementations of several popular DSP algorithms are presented. Their optimization strategies are discussed and their efficiency is compared to that of the standard Collaboration for Astronomy Signal Processing and Electronics Research (CASPER) library solutions. Compared to CASPER, the PFB-FIR and FFT modules require 73% and 45% of the DSP48E1 resources, with performance dominated by ADC quantization noise for typical radio-astronomy inputs.

scholarly journals Introduction to the Special Issue on Digital Signal Processing in Radio Astronomy

2016 ◽  
Vol 05 (04) ◽  
pp. 1602002 ◽  
Author(s):  
D. C. Price ◽  
J. Kocz ◽  
M. Bailes ◽  
L. J. Greenhill
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Radio Astronomy ◽  
Graphics Processing Units ◽  
High Speed ◽  
High Performance ◽  
Digital Signal ◽  
General Purpose ◽  
Special Issue ◽  
Dsp Systems

Advances in astronomy are intimately linked to advances in digital signal processing (DSP). This special issue is focused upon advances in DSP within radio astronomy. The trend within that community is to use off-the-shelf digital hardware where possible and leverage advances in high performance computing. In particular, graphics processing units (GPUs) and field programmable gate arrays (FPGAs) are being used in place of application-specific circuits (ASICs); high-speed Ethernet and Infiniband are being used for interconnect in place of custom backplanes. Further, to lower hurdles in digital engineering, communities have designed and released general-purpose FPGA-based DSP systems, such as the CASPER ROACH board, ASTRON Uniboard, and CSIRO Redback board. In this introductory paper, we give a brief historical overview, a summary of recent trends, and provide an outlook on future directions.

Sign in / Sign up

Export Citation Format

Share Document