SDRDue Updated: Passive Radar Software for RTL-SDRs

Thank you to Daniel Kaminski for writing in and sharing with us news that he has recently updated his SDRDue Passive Radar software for RTL-SDRs. The major update is that thanks to NVIDIA CUDA GPU processing, the ambiguity function can now be calculated extremely quickly, allowing for very high frame rates. Daniel writes:

Last time I was playing with my Passive Radar. I finally created an ambiguity library which is a really fast 70 frame/s analyzing a continuous string of data 2*1024*1024 bits per frame. This allowed me to record signals from slowly moving cars in real-time. I used a normal TV antenna without any modifications in one dongle mode. To support the library I created a Passive Radar program with all the parameters available for tuning. The code is open and available on GitHub. The movie is available on my website Passive radar | Web page od Daniel M. Kamiński (

SDR Due Passive Radar
SDR Due Passive Radar
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So how does this stand, in relation to the KrakenSDR passive radar situation (ITAR)?


ITAR is strictly American thing. The author is Polish, living in Poland so ITAR laws do not apply here and Poland does not have ITAR equivalent (at least not as ridiculously broad as ITAR).


Yes, I understand that completely. However that still doesn’t explain why removed the passive radar code from WORLDWIDE access, yet promotes somebody else’s passive radar. Seems like if you want to protect your US interests by removing the code from github, you’d probably also want to protect others by not promoting their passive radar solutions. It’s just odd to me.