SOURCEFORGE » RALF » 2015 Weather images of NOAA satellites

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h1. *6. Conclusions*

Limitations were encountered when reading files large files (over a MB). So different techniques had to be considered, either reading in packets or implementing queues in order to process the data.

Another aspect of memory limitation had to be faced. Compiling the LabVIEW VI in myRIO over and over seemed to overflow the memory even though we had considered reseting myRIO with the appropriate module. Hardware resets were inevitable at certain points.

h2. *6.1 Further Improvements*

Improvements should be considered in synchronization, and more specifically in defining the maximums in the auto-correlation. Although the implementation of the square wave signal was implemented as described in APT theory there are still improvements to be done. For instance it could be useful to implement a technique which detects if the chosen maximum index is the right one or not.

Another improvement could be a more dynamic implementation of the demodulation and the decoding process. Instead of storing the whole data in a matrix, it another approach would be to treat them as pre-defined data chunks. Since a synchronization waveform defines the start of a line like in Figure 6.1 a dynamic treatment of the signal can be implemented.

Finally, we extracted some very noisy image, espacially the one over central europe presented in the results. It would an great added value to implement a reduction noise algorithm for 2D representation.

p=. !{width: 60%}https://sourceforge.isae.fr/attachments/download/2086/dynamicSynch.png(dynamicSynch)!

_Figure 6.1 Dynamic Synch_