My passive radar code is not a simple gnuradio companion script.
But it is a collection of C++, python octave and bash sourcecode and scripts. Which , when used together in the right way., generates passive radar images. There is no documentation at all yet.

I found out that my private (nldudok1) passive radar branch is indeed not available anymore on the gnuradio server.

The even older gr-radar directory as part of a very old gnuradio release is still available:
See info at:
http://www.olifantasia.com/projects/gnuradio/mdvh/passive_radar/passive_radar_2015/mdvh_gr-radar_in_gnuradio_trunk.txt


For the passive radar presentation at HAMRADIO 2015 I was a bit stressed for time.
So I did not make a nice userfriendly package of it all.
Instead I collected all the code and scripts I needed and added a few extra manual scripts to connect everything together.

First I precaptured the RF signals to file.

Most of the capturing I did with a dual channel capture script I made with gnuradio companion: capture_dual_chan_B210.grc capture_dual_chan_B210.py (complex float output)
And with capture_dual_chan_B210_cshort.grc capture_dual_chan_B210_cshort.py (short  complex int output)
You can find these in pub_files at:
http://www.olifantasia.com/projects/gnuradio/mdvh/passive_radar/passive_radar_2015/pub_files/


I had a home made right-hand circular polarised GPS active antenna connected to one channel of a B210 and a home-made left-hand circular polarized GPS antenna  connected to the second channel of the B210.

I used these capture files together with my code to regenerate the GPS signal
With my code I regenerated the noisefree GPS signals from several received GPS satelites.
(This regenerate code is not released yet)

I used this regenerated noisefree signal together with the received reflections (of the second channel) to do crosscorrelations with different doppler shifts.
For the crosscorreleations I used the gr-passive-radar-standalone framework.
(Note that you need to have octave installed)

I made a tarball of the gr-passive-radar-standalone source as I used it for the HAMRADIO 2015 presentation.
This does not include the capture files (which are several gigabytes large)
http://www.olifantasia.com/projects/gnuradio/mdvh/passive_radar/passive_radar_2015

http://www.olifantasia.com/projects/gnuradio/mdvh/passive_radar/passive_radar_2015/gr-passive-radar-standalone_without_capture_files_2015060901.tar.gz

I also dumped a version with capture files.
This includes the regenerated GPS signals.
http://www.olifantasia.com/projects/gnuradio/mdvh/passive_radar/passive_radar_2015/gr-passive-radar-standalone.2015060901.tar.gz
SInce this file is very large, I will probably not keep this file up very long.


I configured and build in the gr-passive-radar-standalone/build_rojo  directory
I configured and built gr-passive-radar standalone using gnuradio release gnuradio 3.6
Then I manually copied the scripts I needed into gr-passive-radar-standalone/build_rojo/src/lib and gr-passive-radar-standalone/build_rojo/src/lib/test1_rojo