7 SETI Program at the Medicina INAF Radioastronomy …
61
Fig. 7.7 Picture of second pilot project internals. The ADLink DAQ board is the one on the center
while the graphics adapter is on the left
Such a system was the second spectrometer with the same NewSpec project
system architecture (see Fig. 7.3). It was initially used as a test bench for the application software development, and, despite the problems, it validated our technological
strategies, letting us going ahead in the development of the final projects.
At the moment, this system is in stand-by waiting for the development of some
ideas we had to raise its computing power.
7.3.3 The New Final Spectrometers
The DAQ boards turned out to be a critical issue in both pilot projects. Therefore, we
decided to develop two new spectrometers in which we replaced these boards with
new state-of-the-art devices.
The new DAQ boards allow analyzing signals with a much wider band without
delay between successive spectra, but this required far more massive calculations than
the single CPU design. Therefore, this type of spectrometer was designed according
to the new hardware design described in Sect. 2.3 but with a small improvement. In
the final instruments, we used two accelerator GPUs (see Fig. 7.9). In this design,
Précédent

- 75/147

Suivant