ttl / fmcw3

Two RX-channel 6 GHz FMCW radar design files

6 GHz two RX channel FMCW radar design files.

For more information see: https://hforsten.com/third-version-of-homemade-6-ghz-fmcw-radar.html

SAR image formation steps:

Compile Tensorflow custom operations in pc/sar/sar_op. See BUILDING file in that directory for the instructions.

pc/sar/process_sweeps.py is used to slice the correct time from the measurement file.

./process_sweeps.py <log file> <start time> <end time> [decimation factor]

It writes sweeps.p file with the data in the format the image formation scripts know how to read. To form the SAR image run ./backprojection_tf.py sweeps.p or ./omegak_tf.py sweeps.p. Some variables related to the image formation can be found on the top of the image formation scripts.

Example data can be downloaded from: https://hforsten.com/fmcw3/parking_lot_sar.log

Use start and end times of 20 and 136 for it. Decimation factor should be 1 or 2 for backprojection and 2 for omega-k.

fmcw3's Issues

Bill of Materials Challenges

Once again attempting to track down all of the components involved, a large number of entries lack the information necessary to locate them. The majority of entries lack a Manufacturer Part Number, making it very difficult to track down the components. Examples include the 15dB Coupler, and "C_0402b 10n." I have precisely no clue what the second component actually is, and there is significant ambiguity locating the first one. Clarification regarding the MPNs of many of the components would be very helpful.

Updating the schematic with new parts

Hi,
I am updating the parts which has now become obsolete.
Any alternative to XC7A15T-1FTG256C? Can I replace it with same package XC7A50T-1FTG256I? without any code or board changes?

and could you tell the frequency of KT2520K?

database of experiment

Hi,
You did an amazing research on both hardware and algorithm of FMCW radar by yourself.
Can you provide some data of your experiment? or just upload on this repository. Maybe someone like me want to try it.
Thank you very much.

Design Rule Check (DRC) problems of fmcw3

Dear Henrik,

You really contributed a beautiful fmcw radar design. We are trying to build our own radar system using the design of fmcw3. When outputting Gerber files, there were a large number of errors during running DRC. For example:
1 Error: Annular width (board setup constraints...n annular width 0.1000 mm; actual 0.0000 mm)
2 Error: Clearance violation (netclass 'Default' clearance 0.1300 mm; actual 0.0000 mm)
3 Error: Hole clearance violation...
4 Error: Courtyards overlap...
5 Error: Drill out of range...

I'm not sure if this will affect the homemade radar.

Hi,hardrewire project has few lib doucument for sch

I am a rookie,I learned a lot from your design,your design is very good .Upload missing libs for sch if it's convenient. Thank you very much.

TCXO-Mfr. No

Hello, i want to ask if Mfr. No of TCXO is KT2520K40000ECV28TAS?
Thank you.

Have you consider to sell it?

Your project is impressive, but difficult to realize by newbie: have you consider to sell it?