Arcetri Astrophysical Observatory

  • Italiano (IT)
  • English (UK)
  • facebook.png

logosmallarcetri Arcetri Technical Report 3/2018


SKA Project Series
Describing LFAA using SysML

C.Belli, G. Comoretto

INAF Osservatorio Astrofisico di Arcetri

Abstract

During the preparation of the documentation for the SKA Low Frequency Aperture Array, a system modelling tool has been used to aid the system design. The tool adopts the SysML graphics language to describe the system product breakdown structure, to identify the internal and external connection between its elements, the interfaces that characterise the system, and to describe the functions and the data flow associated with each element. The derived diagrams were used in the documents being prepared for the instrument critical design review.

The main advantage in applying such an approach is the ease of modification and maintenance of the documentation. As the elements composing the system and their relations are defined inside the abstract model, any change is automatically reflected in a consistent ways in all diagrams describing the instrument.

The Pdf version of this report will be publicy available after SKA CDR (expected late 2018)

 

logosmallarcetri Arcetri Technical Report 2/2018


SKA Project Series
LFAA tile processing module programming manual

G. Comoretto, C.Belli

INAF Osservatorio Astrofisico di Arcetri

Abstract

The Tile Processing Module is a board performing the data acquisition, channelisation and beamforming for 16 antennas in the SKA LoW Frequency Aperture Array instrument. 16 TPMs are connected using a 40 Gb Ethernet network, to compose a LFAA station with 256 antennas. The LFAA signal processing firmware is composed of modular elements, which are programmed using a standard memory mapped interface. Each module is managed by a software element (plugin), written in Python, which allows a higher level software to manage the board using a standardized set of functions. Here the interface for each module, and the associated plugin, is described for all modules used in the TPM signal processing chain.

Pdf version of this report

 

 

Arcetri Technical Reports 2018



  
1/2018SKA-PSS. SKA CSP Pulsar Search LMC Detailed Design Document
C.Baffa, E.Giani    
 
2/2018SKA Project Series - LFAA tile processing module programming manual
G. Comoretto, C. Belli    
 
3/2018SKA Project Series - Describing LFAA using SysML
C. Belli, G. Comoretto    
 
  

logosmallarcetri Arcetri Technical Report 1/2018


SKA Project Series
SKA-PSS - SKA CSP Pulsar Search LMC Detailed Design Document

C.Baffa, E.Giani

INAF Osservatorio Astrofisico di Arcetri

Abstract

The purpose of this document is to describe the Detailed Design for the SKA Phase 1 CSP Pulsar Search Sub-element LMC (PSS.LMC), with a solution that applies to both SKA Phase 1 Mid (CSP_Mid) and SKA Phase 1 Low (CSP_Low). In this document we present the Arcetri contribution to the SKA CSP Pulsar Search Detailed Design Document along with some general presentation (Author A.Kastergiou and the SKA TDT Team).

The Pdf version of this report will be publicy available after SKA CDR (expected late 2018)

 

 

logosmallarcetri Arcetri Technical Report 6/2017


SKA Project Series
LFAA tile beamformer functional model

S. Chiarucci, G. Comoretto

INAF Osservatorio Astrofisico di Arcetri

Abstract

A complex digital signal processing system like the LFAA tile beamformer requires extensive simulations to test its compliance with the system specifications.

A Matlab simulator, composed of a general purpose signal generator, a simulation pipeline for the actual processing, and a set of analysis tools to extract the significant parameters from the processed data has been designed and tested.

The simulator has been used to test various parameters, as added digital noise, calibration capabilities, spectral response, channel to channel insulation and beamforming losses.

Pdf version of this report

 

More Articles...

  1. 5/17
  2. 4/17
  3. 3/17
  4. 2/17