[TangerineSDR] [HamSCI] White paper on FPGA implementation of chirp receiving (oblique ionosond data)

[Dr. Nathaniel A. Frissell Ph.D.]

Thank you, Tom and Scotty!

73 de Nathaniel W2NAF

From: hamsci at googlegroups.com <hamsci at googlegroups.com> On Behalf Of Tom McDermott
Sent: Monday, July 13, 2020 11:21 AM
To: TAPR TangerineSDR Modular Software Defined Radio <tangerinesdr at lists.tapr.org>; hamsci at googlegroups.com
Subject: [HamSCI] White paper on FPGA implementation of chirp receiving (oblique ionosond data)

During the HAMSCI call with Juha Viernen we discussed some implementation
details of the oblique chirp bases ionosond data.   Juha uses 2 x 1 GbE to
collect the wideband HF data.

In reviewing a possible TangerineSDR implementation the de-chirping process
seems straight-forward within the data engine FPGA.  This approach dramatically
reduces the needed datarate from the receiver to the data collection host.
One difficulty however could be implementing a spectral whitening filter in front of
the de-chirper.

The attached whitepaper looks at an approach and algorithm that appears
to be able to accomplish this within the FPGA itself.  Scotty took a quick look at
it and believes that it would fit within the currently selected FPGA resources.

Please pass along any comments about this approach.  This email has
been cross-posted to both HAMSCI and Tangerine lists since it probably is of
interest to both.

Dave L.:  do we need a new section on the TangerineSDR webpage for white papers?

-- Tom, N5EG




--
Please follow the HamSCI Community Participation Guidelines at http://hamsci.org/hamsci-community-participation-guidelines.
---
You received this message because you are subscribed to the Google Groups "HamSCI" group.
To unsubscribe from this group and stop receiving emails from it, send an email to hamsci+unsubscribe at googlegroups.com<mailto:hamsci+unsubscribe at googlegroups.com>.
To view this discussion on the web visit https://groups.google.com/d/msgid/hamsci/CACO3nRTvbFtZjYv5UCQ_EuV7B1O4SvS%2Bq%3DOY%3D%3DZzTunc1rVdvg%40mail.gmail.com<https://groups.google.com/d/msgid/hamsci/CACO3nRTvbFtZjYv5UCQ_EuV7B1O4SvS%2Bq%3DOY%3D%3DZzTunc1rVdvg%40mail.gmail.com?utm_medium=email&utm_source=footer>.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.tapr.org/pipermail/tangerinesdr_lists.tapr.org/attachments/20200713/7c45f2cf/attachment.html>