Stelio Montebugnoli BEST 4 th SKADS Workshop, Lisbon, 2-3 October 2008 S.Montebgnoli IRA -INAF- Bologna –Italy- 4 th SKADS Workshop, Lisbon, 2-3 October.

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Presentation transcript:

Stelio Montebugnoli BEST 4 th SKADS Workshop, Lisbon, 2-3 October 2008 S.Montebgnoli IRA -INAF- Bologna –Italy- 4 th SKADS Workshop, Lisbon, 2-3 October 2008

Stelio Montebugnoli BEST 4 th SKADS Workshop, Lisbon, 2-3 October 2008 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).

Stelio Montebugnoli BEST 4 th SKADS Workshop, Lisbon, 2-3 October Analogue (T0+12mo) and/or digital optical links (T0+21mo). (Done) Optical Tx Analog Link Optical RX BEST-2 IF

Stelio Montebugnoli BEST 4 th SKADS Workshop, Lisbon, 2-3 October 2008 Low Noise balanced Amplifier IF Amplifier 2- Architecture and technology for immediate application on the BEST - x demonstrator construction (T0+10mo). (Done) Optical link Front End A/D

Stelio Montebugnoli BEST 4 th SKADS Workshop, Lisbon, 2-3 October 2008 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) 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).

Stelio Montebugnoli BEST 4 th SKADS Workshop, Lisbon, 2-3 October 2008 LNA Front end Easily replicable electronic Sync distribution LO distribution Optical Fiber FX correlator DS-6 T2 Deliverables :.. 1,2,3,4,5,. in practice.

Stelio Montebugnoli BEST 4 th SKADS Workshop, Lisbon, 2-3 October 2008 X = Dim. N x T T t using Cholesky Decomp. = Rx n° samples per Rx A/D 12N Final version will be programmed on the Bee 2 engine 6.Tested adaptive beamforming and RFI Mitigation algorithms (T0+39mo) Simulation level. Not jet implemented. It will be the next step pf the Bee2 programming. (Not completely Done).

Stelio Montebugnoli BEST 4 th SKADS Workshop, Lisbon, 2-3 October 2008 DS-6 T3 Deliverables: 1.Simulation Software for sensor array (T months) 2.Methodology to compare expected results with the simulated ones (T months)

Stelio Montebugnoli BEST 4 th SKADS Workshop, Lisbon, 2-3 October Simulation Software for sensor array (T months) 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 Bologna, Italy 2-Università di Bologna, Astronomy Dep., Via Ranzani 1, I Bologna, Italy (Partially done)

Stelio Montebugnoli BEST 4 th SKADS Workshop, Lisbon, 2-3 October 2008 DS6-T3: Assessment of Performace BEST-1: P n obtained with. GRASP = 86.3 K F=408 MHz 2. Methodology to compare expected results with the simulated ones (T months) (Partially done) Computed T SYS Measured T SYS

Stelio Montebugnoli BEST 4 th SKADS Workshop, Lisbon, 2-3 October 2008 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)

Stelio Montebugnoli BEST 4 th SKADS Workshop, Lisbon, 2-3 October 2008 FIFO Coarse Time Delay A D DDC Resc. Delay CTRL Intellig. RFI Handling FFT -1 Calibration/FFT Phase LUT Delay & RFI control PFB Adaptive Beamf. Control Adapt. Beamf. RX 1  I m 1 i  m RX i RX  m Fringes (f) k Beam 1 Beam i I Beam k Rxi Calibration Adaptive/multibeaming Calibration, Direct Pixeling, FX Correlation Calibration, Digital Adaptive beamforming (linked with DS3-T2 & DS 4 T3 and T5) 4 (bits) F X FX corelator Rxi spectrum Rxi Block diagram (Deliverables)

Stelio Montebugnoli BEST 4 th SKADS Workshop, Lisbon, 2-3 October 2008