Transcript Slide 1

S.Montebgnoli
IRA -INAFBologna –Italy4th SKADS Workshop, Lisbon, 2-3 October 2008
4th SKADS Workshop, Lisbon, 2-3 October 2008
BEST
Stelio Montebugnoli
DS-6 T1 Deliverables:
1- Analogue (T0+12mo) and/or digital optical links (T0+21mo).
2- Architecture and technology for immediate application on the BEST - x
demonstrator construction (T0+10mo).
Year 1
Project
DS6 - T1: Design Develop and Demonstrate
Sub - Systems
Qtr 1
Qtr 2
Qtr 3
Year 2
Qtr 4
Qtr 1
Qtr 2
Qtr 3
Year 3
Qtr 4
Qtr 1
Qtr 2
Qtr 3
Year 4
Qtr 4
Qtr 1
Qtr 2
Qtr 3
Qtr 4
End Best - 1 Construction
Best - 2 Construction
Best - 3 Construction
Analog and / or digital optical links
Architecture and technology for immediate application on
the BEST - x demonstrator construction
4th SKADS Workshop, Lisbon, 2-3 October 2008
BEST
Stelio Montebugnoli
1- Analogue (T0+12mo) and/or digital optical links
(T0+21mo). (Done)
Analog Link
Optical RX
BEST-2 IF
Optical Tx
4th SKADS Workshop, Lisbon, 2-3 October 2008
BEST
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2- Architecture and technology for immediate
application on the BEST - x demonstrator construction
(T0+10mo). (Done)
Low Noise balanced Amplifier
Optical link
Front End
IF Amplifier
A/D
4th SKADS Workshop, Lisbon, 2-3 October 2008
BEST
Stelio Montebugnoli
DS-6 T2 Deliverables:
1. front ends to the receiver room (T0+12mo).
2. Immediately ready and easily replicable electronic (T0+12mo).
3. Local oscillator and sync. distribution in large infrastructures/arrays (T+38mo).
4. Wide band and high dynamic range Data Acquisition System (T+39mo).
5. 2 GHz analogue optical link (already used in BEST-1 and planned for BEST-2, -3
6.Tested adaptive beamforming and RFI Mitigation algorithms (T0+39mo).
Year 1
Project
DS6 - T2: Develop and Demonstrate BEST
Qtr 1
Qtr 2
Qtr 3
Year 2
Qtr 4
Qtr 1
Qtr 2
Qtr 3
Year 3
Qtr 4
Qtr 1
Qtr 2
Qtr 3
Year 4
Qtr 4
Qtr 1
Qtr 2
Qtr 3
Qtr 4
End Best - 1 Construction
Best - 2 Construction
Best - 3 Construction
IRA - TEKMAR 2GHz analog optical link (already used in
BEST-1 and planned for BEST-2, -3 from the front-ends
to the receivers room) and digital link
Immediately ready and easily replicable electronic
Local oscillator and sync distribution in large
infrastructure / arrays
Wide band high dynamic range Data Acquisition System
Software Beamforming
Tested adaptive beamforming and RFI mitigation
algorithms
4th SKADS Workshop, Lisbon, 2-3 October 2008
BEST
Stelio Montebugnoli
DS-6 T2 Deliverables:.. 1,2,3,4,5, .in practice.
LNA
Front end
FX correlator
4th SKADS Workshop, Lisbon, 2-3 October 2008
Easily replicable electronic
Optical Fiber
BEST
Sync distribution
LO distribution
Stelio Montebugnoli
6.Tested adaptive beamforming and RFI Mitigation algorithms
(T0+39mo) (Not completely Done).
1
2
N
Simulation level. Not jet implemented .
It will be the next step pf the Bee2 programming.
A/D
w1
A/D
w2
A/D
w N
Rˆ 1
t
T
Rˆ
X=
Rx
n° samples
per Rx
using
Cholesky
Decomp.
dˆ0
Dim. NxT
Rˆ 1dˆ0
w = ˆ H ˆ 1 ˆ
d R d
0
0
Final version will be programmed on the Bee 2 engine
4th SKADS Workshop, Lisbon, 2-3 October 2008
BEST
Stelio Montebugnoli
DS-6 T3 Deliverables:
1.Simulation Software for sensor array (T0 + 36 months)
2.Methodology to compare expected results with the simulated ones (T0 +
39 months)
Year 1
Project
DS6 - T3: Assessment of performances
Year 2
Year 3
Year 4
Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4
End Best - 1 Construction
Best - 2 Construction
Best - 3 Construction
Simulation software for sensor array
Methodology to compare expected results with the
simulated ones
Comparison of performances with the SKAMP
demonstrator
4th SKADS Workshop, Lisbon, 2-3 October 2008
BEST
Stelio Montebugnoli
1. Simulation Software for sensor array (T0 + 36 months)
(Partially done)
UV-plane coverage analysis for the BEST project
(SKA-DS) INAF-IRA Technical Report #417/08
E. Carretti1, D. Dallacasa1, 2
1-INAF–IRA, Via Gobetti 101, I-40129 Bologna, Italy
2-Università di Bologna, Astronomy Dep., Via Ranzani 1, I-40126 Bologna,
Italy
4th SKADS Workshop, Lisbon, 2-3 October 2008
BEST
Stelio Montebugnoli
2. Methodology to compare expected results with the
simulated ones (T0 + 39 months) (Partially done)
 P  ; ,  T  ; ,  sin  d d
DS6-T3: Assessment of
T  ;  ,  ,   
Performace
 P  ; ,  sin  d d
n
b
  0,
  0,2
ant
0
0
0
n
= 86.3 K
  0,
  0,2
Computed TSYS
BEST-1: Pn obtained with .
GRASP
GBEST 1 
Computed TSYS
F=408 MHz
K
1  Ag 26  K 
10    0.045  
2 k
 Jy 
 Jy 
Tsys  GBEST 1  Fluxeq  0.045 K Jy  2100 Jy  94.5 K 
Measured TSYS
4th SKADS Workshop, Lisbon, 2-3 October 2008
BEST
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DS-4 Deliverables: (to be focused with J.G. Bij de Vaate and Laurens
Bakker)
Kick off meeting in Medicina
(Bologna) on April 2008 (BdeV)
4th SKADS Workshop, Lisbon, 2-3 October 2008
BEST
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Rxi
A
Calibration, Direct Pixeling, FX Correlation Calibration,
Digital Adaptive beamforming (linked with DS3-T2 & DS 4
T3 and T5)
D
Coarse Time
Delay
DDC
FIFO
FX corelator
Rxi spectrum
F
X
.
Resc
PFB
Fringes (f)
4 (bits)
Delay
CTRL
Intellig.
RFI
I
FFT-1
Handling
Adapt.
Beamf.
RX 1
1

Beam 1

Beam i

Beam k
m
I
Delay & RFI
control
Calibration/FFT
Phase LUT
Adaptive
Beamf.
Control
i
m
Rxi Calibration
RX i
k
RX
m
Adaptive/multibeaming
Block diagram (Deliverables)
4th SKADS Workshop, Lisbon, 2-3 October 2008
BEST
Stelio Montebugnoli
4th SKADS Workshop, Lisbon, 2-3 October 2008
BEST
Stelio Montebugnoli